diff --git a/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button-debug.js b/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button-debug.js
index 4fee53bca80..c0c14aede45 100644
--- a/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button-debug.js
+++ b/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button-debug.js
@@ -81,7 +81,7 @@ M.atto_equation = M.atto_equation || {
             M.editor_atto.focus(elementid);
         }
         M.atto_equation.selection = M.editor_atto.get_selection();
-        if (M.atto_equation.selection !== false && (!M.atto_equation.selection.collapsed)) {
+        if (M.atto_equation.selection) {
             var dialogue;
             if (!M.atto_equation.dialogue) {
                 dialogue = new M.core.dialogue({
diff --git a/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button-min.js b/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button-min.js
index 6c40ed061fa..0f416d5eab3 100644
--- a/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button-min.js
+++ b/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button-min.js
@@ -1 +1 @@
-YUI.add("moodle-atto_equation-button",function(e,t){M.atto_equation=M.atto_equation||{dialogue:null,selection:null,contextids:{},library:{},lastcursor:0,display_chooser:function(t,n){t.preventDefault(),M.editor_atto.is_active(n)||M.editor_atto.focus(n),M.atto_equation.selection=M.editor_atto.get_selection();if(M.atto_equation.selection!==!1&&!M.atto_equation.selection.collapsed){var r;M.atto_equation.dialogue?r=M.atto_equation.dialogue:r=new M.core.dialogue({visible:!1,modal:!0,close:!0,draggable:!0,width:"800px"}),r.render(),r.set("bodyContent",M.atto_equation.get_form_content(n)),r.set("headerContent",M.util.get_string("pluginname","atto_equation"));var i=new e.TabView({srcNode:"#atto_equation_library"});i.render(),r.show();var s=M.atto_equation.resolve_equation();s&&e.one("#atto_equation_equation").set("text",s),M.atto_equation.update_preview(!1,n),M.atto_equation.dialogue=r}},init:function(e){var t=M.util.image_url("e/math","core");e.texfilteractive&&(this.contextids[e.elementid]=e.contextid,this.library=e.library,M.editor_atto.add_toolbar_button(e.elementid,"equation",t,e.group,this.display_chooser),M.editor_atto.on("atto:selectionchanged",function(e){M.atto_equation.resolve_equation()?M.editor_atto.add_widget_highlight(e.elementid,"equation"):M.editor_atto.remove_widget_highlight(e.elementid,"equation")}))},resolve_equation:function(){var t=M.editor_atto.get_selection_parent_node(),n,r;return t?(n=e.one(t).get("text"),pattern=/\$\$[\S\s]*\$\$/,r=pattern.exec(n),r&&r.length?(r=r.pop(),r=r.substring(2,r.length-2),r):!1):!1},set_equation:function(t,n){var r,i,s,o,u,a;t.preventDefault(),M.atto_equation.dialogue.hide(),M.editor_atto.set_selection(M.atto_equation.selection),r=t.currentTarget.ancestor(".atto_form").one("textarea"),a=r.get("value"),a!==""&&(a="$$ "+a.trim()+" $$",i=e.one(M.editor_atto.get_selection_parent_node()),s=i.get("text"),o=/\$\$[\S\s]*\$\$/,u=o.exec(s),u&&u.length?(u=u.pop(),s=s.replace(u,"$$"+a+"$$"),i.set("text",s)):M.editor_atto.insert_html_at_focus_point(a),M.editor_atto.text_updated(n))},update_preview:function(t,n){var r=e.one("#atto_equation_equation"),i=r.get("value"),s,o,u="",a="\\square ",f=r.get("selectionStart");f||(f=0);while(i.charAt(f)==="\\"&&f>0)f-=1;var l=/[\w\{\}]/;while(l.test(i.charAt(f))&&f<i.length)f+=1;this.lastcursorpos=f,i=u+i.substring(0,f)+a+i.substring(f),t&&t.preventDefault(),s=M.cfg.wwwroot+"/lib/editor/atto/plugins/equation/ajax.php",params={sesskey:M.cfg.sesskey,contextid:this.contextids[n],action:"filtertext",text:"$$ "+i+" $$"},o=e.io(s,{sync:!0,data:params}),o.status===200&&e.one("#atto_equation_preview").setHTML(o.responseText)},get_form_content:function(t){var n=e.Node.create('<form class="atto_form">'+this.get_library_html(t)+'<label for="atto_equation_equation">'+M.util.get_string("editequation","atto_equation")+"</label>"+'<textarea class="fullwidth" id="atto_equation_equation" rows="8"></textarea><br/>'+"<p>"+M.util.get_string("editequation_desc","atto_equation")+"</p>"+'<label for="atto_equation_preview">'+M.util.get_string("preview","atto_equation")+"</label>"+'<div class="fullwidth" id="atto_equation_preview"></div>'+'<div class="mdl-align">'+"<br/>"+'<button id="atto_equation_submit">'+M.util.get_string("saveequation","atto_equation")+"</button>"+"</div>"+"</form>");return n.one("#atto_equation_submit").on("click",M.atto_equation.set_equation,this,t),n.one("#atto_equation_equation").on("valuechange",M.atto_equation.update_preview,this,t),n.one("#atto_equation_equation").on("keyup",M.atto_equation.update_preview,this,t),n.one("#atto_equation_equation").on("mouseup",M.atto_equation.update_preview,this,t),n.delegate("click",M.atto_equation.select_library_item,"#atto_equation_library button",this,t),n},select_library_item:function(e,t){var n=e.currentTarget.getAttribute("data-tex");e.preventDefault(),input=e.currentTarget.ancestor(".atto_form").one("textarea"),value=input.get("value"),value=value.substring(0,this.lastcursorpos)+n+value.substring(this.lastcursorpos,value.length),input.set("value",value),input.focus();var r=this.lastcursorpos+n.length,i=input.getDOMNode();if(typeof i.selectionStart=="number")i.selectionStart=i.selectionEnd=r;else if(typeof i.createTextRange!="undefined"){var s=i.createTextRange();s.moveToPoint(r),s.select()}M.atto_equation.update_preview(!1,t)},get_library_html:function(t){var n='<div id="atto_equation_library">',r=0,i=1;n+="<ul>";for(i=1;i<5;i++)n+='<li><a href="#atto_equation_library'+i+'">'+M.util.get_string("librarygroup"+i,"atto_equation")+"</a></li>";n+="</ul>",n+="<div>";for(i=1;i<5;i++){n+='<div id="atto_equation_library'+i+'">';var s=this.library["group"+i].split("\n");for(r=0;r<s.length;r++)s[r]&&(s[r]=e.Escape.html(s[r]),n+='<button data-tex="'+s[r]+'" title="'+s[r]+'">$$'+s[r]+"$$</button>");n+="</div>"}n+="</div>",n+="</div>";var o=M.cfg.wwwroot+"/lib/editor/atto/plugins/equation/ajax.php",u={sesskey:M.cfg.sesskey,contextid:this.contextids[t],action:"filtertext",text:n};return preview=e.io(o,{sync:!0,data:u,method:"POST"}),preview.status===200&&(n=preview.responseText),n}}},"@VERSION@",{requires:["node","escape","io","event-valuechange","tabview"]});
+YUI.add("moodle-atto_equation-button",function(e,t){M.atto_equation=M.atto_equation||{dialogue:null,selection:null,contextids:{},library:{},lastcursor:0,display_chooser:function(t,n){t.preventDefault(),M.editor_atto.is_active(n)||M.editor_atto.focus(n),M.atto_equation.selection=M.editor_atto.get_selection();if(M.atto_equation.selection){var r;M.atto_equation.dialogue?r=M.atto_equation.dialogue:r=new M.core.dialogue({visible:!1,modal:!0,close:!0,draggable:!0,width:"800px"}),r.render(),r.set("bodyContent",M.atto_equation.get_form_content(n)),r.set("headerContent",M.util.get_string("pluginname","atto_equation"));var i=new e.TabView({srcNode:"#atto_equation_library"});i.render(),r.show();var s=M.atto_equation.resolve_equation();s&&e.one("#atto_equation_equation").set("text",s),M.atto_equation.update_preview(!1,n),M.atto_equation.dialogue=r}},init:function(e){var t=M.util.image_url("e/math","core");e.texfilteractive&&(this.contextids[e.elementid]=e.contextid,this.library=e.library,M.editor_atto.add_toolbar_button(e.elementid,"equation",t,e.group,this.display_chooser),M.editor_atto.on("atto:selectionchanged",function(e){M.atto_equation.resolve_equation()?M.editor_atto.add_widget_highlight(e.elementid,"equation"):M.editor_atto.remove_widget_highlight(e.elementid,"equation")}))},resolve_equation:function(){var t=M.editor_atto.get_selection_parent_node(),n,r;return t?(n=e.one(t).get("text"),pattern=/\$\$[\S\s]*\$\$/,r=pattern.exec(n),r&&r.length?(r=r.pop(),r=r.substring(2,r.length-2),r):!1):!1},set_equation:function(t,n){var r,i,s,o,u,a;t.preventDefault(),M.atto_equation.dialogue.hide(),M.editor_atto.set_selection(M.atto_equation.selection),r=t.currentTarget.ancestor(".atto_form").one("textarea"),a=r.get("value"),a!==""&&(a="$$ "+a.trim()+" $$",i=e.one(M.editor_atto.get_selection_parent_node()),s=i.get("text"),o=/\$\$[\S\s]*\$\$/,u=o.exec(s),u&&u.length?(u=u.pop(),s=s.replace(u,"$$"+a+"$$"),i.set("text",s)):M.editor_atto.insert_html_at_focus_point(a),M.editor_atto.text_updated(n))},update_preview:function(t,n){var r=e.one("#atto_equation_equation"),i=r.get("value"),s,o,u="",a="\\square ",f=r.get("selectionStart");f||(f=0);while(i.charAt(f)==="\\"&&f>0)f-=1;var l=/[\w\{\}]/;while(l.test(i.charAt(f))&&f<i.length)f+=1;this.lastcursorpos=f,i=u+i.substring(0,f)+a+i.substring(f),t&&t.preventDefault(),s=M.cfg.wwwroot+"/lib/editor/atto/plugins/equation/ajax.php",params={sesskey:M.cfg.sesskey,contextid:this.contextids[n],action:"filtertext",text:"$$ "+i+" $$"},o=e.io(s,{sync:!0,data:params}),o.status===200&&e.one("#atto_equation_preview").setHTML(o.responseText)},get_form_content:function(t){var n=e.Node.create('<form class="atto_form">'+this.get_library_html(t)+'<label for="atto_equation_equation">'+M.util.get_string("editequation","atto_equation")+"</label>"+'<textarea class="fullwidth" id="atto_equation_equation" rows="8"></textarea><br/>'+"<p>"+M.util.get_string("editequation_desc","atto_equation")+"</p>"+'<label for="atto_equation_preview">'+M.util.get_string("preview","atto_equation")+"</label>"+'<div class="fullwidth" id="atto_equation_preview"></div>'+'<div class="mdl-align">'+"<br/>"+'<button id="atto_equation_submit">'+M.util.get_string("saveequation","atto_equation")+"</button>"+"</div>"+"</form>");return n.one("#atto_equation_submit").on("click",M.atto_equation.set_equation,this,t),n.one("#atto_equation_equation").on("valuechange",M.atto_equation.update_preview,this,t),n.one("#atto_equation_equation").on("keyup",M.atto_equation.update_preview,this,t),n.one("#atto_equation_equation").on("mouseup",M.atto_equation.update_preview,this,t),n.delegate("click",M.atto_equation.select_library_item,"#atto_equation_library button",this,t),n},select_library_item:function(e,t){var n=e.currentTarget.getAttribute("data-tex");e.preventDefault(),input=e.currentTarget.ancestor(".atto_form").one("textarea"),value=input.get("value"),value=value.substring(0,this.lastcursorpos)+n+value.substring(this.lastcursorpos,value.length),input.set("value",value),input.focus();var r=this.lastcursorpos+n.length,i=input.getDOMNode();if(typeof i.selectionStart=="number")i.selectionStart=i.selectionEnd=r;else if(typeof i.createTextRange!="undefined"){var s=i.createTextRange();s.moveToPoint(r),s.select()}M.atto_equation.update_preview(!1,t)},get_library_html:function(t){var n='<div id="atto_equation_library">',r=0,i=1;n+="<ul>";for(i=1;i<5;i++)n+='<li><a href="#atto_equation_library'+i+'">'+M.util.get_string("librarygroup"+i,"atto_equation")+"</a></li>";n+="</ul>",n+="<div>";for(i=1;i<5;i++){n+='<div id="atto_equation_library'+i+'">';var s=this.library["group"+i].split("\n");for(r=0;r<s.length;r++)s[r]&&(s[r]=e.Escape.html(s[r]),n+='<button data-tex="'+s[r]+'" title="'+s[r]+'">$$'+s[r]+"$$</button>");n+="</div>"}n+="</div>",n+="</div>";var o=M.cfg.wwwroot+"/lib/editor/atto/plugins/equation/ajax.php",u={sesskey:M.cfg.sesskey,contextid:this.contextids[t],action:"filtertext",text:n};return preview=e.io(o,{sync:!0,data:u,method:"POST"}),preview.status===200&&(n=preview.responseText),n}}},"@VERSION@",{requires:["node","escape","io","event-valuechange","tabview"]});
diff --git a/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button.js b/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button.js
index 4fee53bca80..c0c14aede45 100644
--- a/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button.js
+++ b/lib/editor/atto/plugins/equation/yui/build/moodle-atto_equation-button/moodle-atto_equation-button.js
@@ -81,7 +81,7 @@ M.atto_equation = M.atto_equation || {
             M.editor_atto.focus(elementid);
         }
         M.atto_equation.selection = M.editor_atto.get_selection();
-        if (M.atto_equation.selection !== false && (!M.atto_equation.selection.collapsed)) {
+        if (M.atto_equation.selection) {
             var dialogue;
             if (!M.atto_equation.dialogue) {
                 dialogue = new M.core.dialogue({
diff --git a/lib/editor/atto/plugins/equation/yui/src/button/js/button.js b/lib/editor/atto/plugins/equation/yui/src/button/js/button.js
index 9253c0b5a3c..8fde5344f23 100644
--- a/lib/editor/atto/plugins/equation/yui/src/button/js/button.js
+++ b/lib/editor/atto/plugins/equation/yui/src/button/js/button.js
@@ -79,7 +79,7 @@ M.atto_equation = M.atto_equation || {
             M.editor_atto.focus(elementid);
         }
         M.atto_equation.selection = M.editor_atto.get_selection();
-        if (M.atto_equation.selection !== false && (!M.atto_equation.selection.collapsed)) {
+        if (M.atto_equation.selection) {
             var dialogue;
             if (!M.atto_equation.dialogue) {
                 dialogue = new M.core.dialogue({
diff --git a/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button-debug.js b/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button-debug.js
index 566b652527d..0dd4d4aee30 100644
--- a/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button-debug.js
+++ b/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button-debug.js
@@ -145,6 +145,7 @@ M.atto_image = M.atto_image || {
     dialogue: null,
     selection: null,
     currentlyselected : {},
+    lastselectedimage : null,
     init: function(params) {
         var display_chooser = function(e, elementid) {
             e.preventDefault();
@@ -183,7 +184,7 @@ M.atto_image = M.atto_image || {
         // This includes cursor changes, we check if the button should be active or not, based
         // on the text selection.
         M.editor_atto.on('atto:selectionchanged', function(e) {
-            if (M.editor_atto.selection_filter_matches(e.elementid, SELECTORS.TAGS, e.selectedNodes)) {
+            if (M.editor_atto.selection_filter_matches(e.elementid, SELECTORS.TAGS, e.selectedNodes, false)) {
                 M.editor_atto.add_widget_highlight(e.elementid, 'image');
                 M.editor_atto.currentlyselected[e.elementid] = e.selectedNodes;
             } else {
@@ -263,8 +264,13 @@ M.atto_image = M.atto_image || {
 
         M.atto_image.dialogue.hide();
 
+        M.editor_atto.focus(elementid);
         if (url !== '') {
-            M.editor_atto.set_selection(M.atto_image.selection);
+            if (this.lastselectedimage) {
+                M.editor_atto.set_selection(M.editor_atto.get_selection_from_node(this.lastselectedimage));
+            } else {
+                M.editor_atto.set_selection(M.atto_image.selection);
+            }
             imagehtml = '<img src="' + Y.Escape.html(url) + '" alt="' + Y.Escape.html(alt) + '"';
 
             if (width) {
@@ -310,14 +316,14 @@ M.atto_image = M.atto_image || {
             images = M.editor_atto.currentlyselected[elementid],
             i, image, width, height, style;
 
-        if (images !== null && images.size() > 0) {
+        if (images) {
+            images = images.filter('img');
+        }
+
+        if (images && images.size()) {
             image = images.item(0);
-            for (i in images) {
-                if (images[i].test('img')) {
-                    image = images[i];
-                    break;
-                }
-            }
+            this.lastselectedimage = image;
+
             style = image.getAttribute('style');
             width = parseInt(image.getAttribute('width'), 10);
             height = parseInt(image.getAttribute('height'), 10);
diff --git a/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button-min.js b/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button-min.js
index 074c97fd6eb..5aec326d218 100644
--- a/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button-min.js
+++ b/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button-min.js
@@ -1,2 +1,2 @@
-YUI.add("moodle-atto_image-button",function(e,t){var n={TAGS:"img"},r={INPUTALIGNMENT:"atto_image_alignment",INPUTALT:"atto_image_altentry",INPUTHEIGHT:"atto_image_heightentry",INPUTSUMBIT:"atto_image_urlentrysubmit",INPUTURL:"atto_image_urlentry",INPUTWIDTH:"atto_image_widthentry",IMAGEALTWARNING:"atto_image_altwarning",IMAGEBROWSER:"openimagebrowser",IMAGEPRESENTATION:"atto_image_presentation",IMAGEPREVIEW:"atto_image_preview"},i,s;s=function(e,t){this.value=e,this.style=t,this.regex=new RegExp(this._regex_escape(t)+" *: *"+this._regex_escape(e))},s.prototype={value:null,style:null,regex:null,test:function(e){return this.regex.test(e)},_regex_escape:function(e){return e.replace(/([.*+?\^=!:${}()|\[\]\/\\])/g,"\\$1")},apply:function(e){var t=e.getAttribute("style");t!==""&&t.substr(t.length-1,1)!==";"&&(t+=";"),t+=this.style+": "+this.value+";"},to_select_option:function(){var e=M.util.get_string("alignment_"+this.value.replace("-",""),"atto_image");return value=this.style+": "+this.value,'<option value="'+value+'">'+e+"</option>"}},i=[new s("baseline","vertical-align"),new s("sub","vertical-align"),new s("super","vertical-align"),new s("top","vertical-align"),new s("text-top","vertical-align"),new s("middle","vertical-align"),new s("bottom","vertical-align"),new s("text-bottom","vertical-align"),new s("left","float"),new s("right","float")],M.atto_image=M.atto_image||{dialogue:null,selection:null,currentlyselected:{},init:function(e){var t=function(e,t){e.preventDefault(),M.editor_atto.is_active(t)||M.editor_atto.focus(t),M.atto_image.selection=M.editor_atto.get_selection();if(M.atto_image.selection!==!1){var n;M.atto_image.dialogue?n=M.atto_image.dialogue:n=new M.core.dialogue({visible:!1,modal:!0,close:!0,draggable:!0}),n.set("bodyContent",M.atto_image.get_form_content(t)),n.set("headerContent",M.util.get_string("createimage","atto_image")),n.render(),n.centerDialogue(),M.atto_image.dialogue=n,n.show()}},r=M.util.image_url("e/insert_edit_image","core");M.editor_atto.add_toolbar_button(e.elementid,"image",r,e.group,t),M.editor_atto.currentlyselected=M.editor_atto.currentlyselected||{},M.editor_atto.currentlyselected[e.elementid]=null,M.editor_atto.on("atto:selectionchanged",function(e){M.editor_atto.selection_filter_matches(e.elementid,n.TAGS,e.selectedNodes)?(M.editor_atto.add_widget_highlight(e.elementid,"image"),M.editor_atto.currentlyselected[e.elementid]=e.selectedNodes):(M.editor_atto.remove_widget_highlight(e.elementid,"image"),M.editor_atto.currentlyselected[e.elementid]=null)})},open_filepicker:function(e){var t=this.getAttribute("data-editor");e.preventDefault(),M.editor_atto.show_filepicker(t,"image",M.atto_image.filepicker_callback)},filepicker_callback:function(t){if(t.url!==""){var n=e.one("#"+r.INPUTURL);n.set("value",t.url);var i=new Image;i.onload=function(){e.one("#"+r.INPUTWIDTH).set("value",this.width),e.one("#"+r.INPUTHEIGHT).set("value",this.height),e.one("#"+r.IMAGEPREVIEW).set("src",this.src),e.one("#"+r.IMAGEPREVIEW).setStyle("display","inline")},i.src=t.url}},url_changed:function(){var t=e.one("#"+r.INPUTURL);if(t.get("value")!==""){var n=new Image;n.onload=function(){var t;t=e.one("#"+r.INPUTWIDTH),t.get("value")===""&&t.set("value",this.width),t=e.one("#"+r.INPUTHEIGHT),t.get("value")===""&&t.set("value",this.height),t=e.one("#"+r.IMAGEPREVIEW),t.set("src",this.src),t.setStyle("display","inline")},n.src=t.get("value")}},set_image:function(t,n){var i=t.currentTarget.ancestor(".atto_form"),s=i.one("#"+r.INPUTURL).get("value"),o=i.one("#"+r.INPUTALT).get("value"),u=i.one("#"+r.INPUTWIDTH).get("value"),a=i.one("#"+r.INPUTHEIGHT).get("value"),f=i.one("#"+r.INPUTALIGNMENT).get("value"),l=i.one("#"+r.IMAGEPRESENTATION).get("checked"),c;t.preventDefault();if(o===""&&!l){i.one("#"+r.IMAGEALTWARNING).setStyle("display","block"),i.one("#"+r.INPUTALT).setAttribute("aria-invalid",!0),i.one("#"+r.IMAGEPRESENTATION).setAttribute("aria-invalid",!0);return}i.one("#"+r.IMAGEALTWARNING).setStyle("display","none"),i.one("#"+r.INPUTALT).setAttribute("aria-invalid",!1),i.one("#"+r.IMAGEPRESENTATION).setAttribute("aria-invalid",!1),M.atto_image.dialogue.hide(),s!==""&&(M.editor_atto.set_selection(M.atto_image.selection),c='<img src="'+e.Escape.html(s)+'" alt="'+e.Escape.html(o)+'"',u&&(c+=' width="'+e.Escape.html(u)+'"'),a&&(c+=' height="'+e.Escape.html(a)+'"'),l&&(c+=' role="presentation"'),f&&(c+=' style="'+f+'"'),c+="/>",M.editor_atto.insert_html_at_focus_point(c),M.editor_atto.text_updated(n))},_get_selected_image_properties:function(e){var t={src:null,alt:null,width:null,height:null,align:null,display:"inline",presentation:!1},n=M.editor_atto.currentlyselected[e],r,s,o,u,a;if(n!==null&&n.size()>0){s=n.item(0);for(r in n)if(n[r].test("img")){s=n[r];break}a=s.getAttribute("style"),o=parseInt(s.getAttribute("width"),10),u=parseInt(s.getAttribute("height"),10),o>0&&(t.width=o),u>0&&(t.height=u);for(r in i)if(i[r].test(a)){t.align=i[r];break}return t.src=s.getAttribute("src"),t.alt=s.getAttribute("alt")||"",t.presentation=s.get("role")==="presentation",t}return!1},get_form_content:function(t){var n={alignment:M.util.get_string("alignment","atto_image"),alt:M.util.get_string("enteralt","atto_image"),browse:M.util.get_string("browserepositories","atto_image"),create:M.util.get_string("createimage","atto_image"),height:M.util.get_string("height","atto_image"),presentation:M.util.get_string("presentation","atto_image"),presentationrequired:M.util.get_string("presentationoraltrequired","atto_image"),preview:M.util.get_string("preview","atto_image"),width:M.util.get_string("width","atto_image"),url:M.util.get_string("enterurl","atto_image")},s,o;s='<form class="atto_form"><label for="'+r.INPUTURL+'">'+n.url+"</label>"+'<input class="fullwidth" type="url" value="" id="'+r.INPUTURL+'" size="32"/>'+"<br/>",M.editor_atto.can_show_filepicker(t,"image")&&(s+='<button id="'+r.IMAGEBROWSER+'" data-editor="'+e.Escape.html(t)+'" type="button">'+n.browse+"</button>"+"<br/>"),s+='<div style="display:none" role="alert" id="'+
-r.IMAGEALTWARNING+'" class="warning">'+n.presentationrequired+"</div>"+'<label for="'+r.INPUTALT+'">'+n.alt+"</label>"+'<input class="fullwidth" type="text" value="" id="'+r.INPUTALT+'" size="32"/>'+"<br/>",s+='<input type="checkbox" id="'+r.IMAGEPRESENTATION+'"/>'+'<label class="sameline" for="'+r.IMAGEPRESENTATION+'">'+n.presentation+"</label>"+"<br/>",s+='<label class="sameline" for="'+r.INPUTWIDTH+'">'+n.width+"</label>"+'<input type="text" value="" id="'+r.INPUTWIDTH+'" size="10"/>'+"<br/>",s+='<label class="sameline" for="'+r.INPUTHEIGHT+'">'+n.height+"</label>"+'<input type="text" value="" id="'+r.INPUTHEIGHT+'" size="10"/>'+"<br/>",s+='<label class="sameline" for="'+r.INPUTALIGNMENT+'">'+n.alignment+"</label>"+'<select id="'+r.INPUTALIGNMENT+'">';for(o in i)s+=i[o].to_select_option();s+="</select><br/>",s+='<label for="'+r.IMAGEPREVIEW+'">'+n.preview+"</label>"+'<img src="#" width="200" id="'+r.IMAGEPREVIEW+'" alt="" style="display: none;"/>'+'<div class="mdl-align">'+"<br/>",s+='<button id="'+r.INPUTSUMBIT+'" type="submit">'+n.create+"</button>"+"</div>"+"</form>";var u=e.Node.create(s);return this._apply_image_properties(u,t),u.one("#"+r.INPUTURL).on("blur",M.atto_image.url_changed,this),u.one("#"+r.INPUTSUMBIT).on("click",M.atto_image.set_image,this,t),M.editor_atto.can_show_filepicker(t,"image")&&u.one("#"+r.IMAGEBROWSER).on("click",M.atto_image.open_filepicker),u},_apply_image_properties:function(e,t){var n=this._get_selected_image_properties(t),i=e.one("#"+r.IMAGEPREVIEW);if(n===!1){i.setStyle("display","none");return}n.align&&n.align.apply(i),n.display&&i.setStyle("display",n.display),n.width&&e.one("#"+r.INPUTWIDTH).set("value",n.width),n.height&&e.one("#"+r.INPUTHEIGHT).set("value",n.height),n.alt&&e.one("#"+r.INPUTALT).set("value",n.alt),n.src&&(e.one("#"+r.INPUTURL).set("value",n.src),i.setAttribute("src",n.src)),n.presentation&&e.one("#"+r.IMAGEPRESENTATION).set("checked","checked")}}},"@VERSION@",{requires:["node","escape"]});
+YUI.add("moodle-atto_image-button",function(e,t){var n={TAGS:"img"},r={INPUTALIGNMENT:"atto_image_alignment",INPUTALT:"atto_image_altentry",INPUTHEIGHT:"atto_image_heightentry",INPUTSUMBIT:"atto_image_urlentrysubmit",INPUTURL:"atto_image_urlentry",INPUTWIDTH:"atto_image_widthentry",IMAGEALTWARNING:"atto_image_altwarning",IMAGEBROWSER:"openimagebrowser",IMAGEPRESENTATION:"atto_image_presentation",IMAGEPREVIEW:"atto_image_preview"},i,s;s=function(e,t){this.value=e,this.style=t,this.regex=new RegExp(this._regex_escape(t)+" *: *"+this._regex_escape(e))},s.prototype={value:null,style:null,regex:null,test:function(e){return this.regex.test(e)},_regex_escape:function(e){return e.replace(/([.*+?\^=!:${}()|\[\]\/\\])/g,"\\$1")},apply:function(e){var t=e.getAttribute("style");t!==""&&t.substr(t.length-1,1)!==";"&&(t+=";"),t+=this.style+": "+this.value+";"},to_select_option:function(){var e=M.util.get_string("alignment_"+this.value.replace("-",""),"atto_image");return value=this.style+": "+this.value,'<option value="'+value+'">'+e+"</option>"}},i=[new s("baseline","vertical-align"),new s("sub","vertical-align"),new s("super","vertical-align"),new s("top","vertical-align"),new s("text-top","vertical-align"),new s("middle","vertical-align"),new s("bottom","vertical-align"),new s("text-bottom","vertical-align"),new s("left","float"),new s("right","float")],M.atto_image=M.atto_image||{dialogue:null,selection:null,currentlyselected:{},lastselectedimage:null,init:function(e){var t=function(e,t){e.preventDefault(),M.editor_atto.is_active(t)||M.editor_atto.focus(t),M.atto_image.selection=M.editor_atto.get_selection();if(M.atto_image.selection!==!1){var n;M.atto_image.dialogue?n=M.atto_image.dialogue:n=new M.core.dialogue({visible:!1,modal:!0,close:!0,draggable:!0}),n.set("bodyContent",M.atto_image.get_form_content(t)),n.set("headerContent",M.util.get_string("createimage","atto_image")),n.render(),n.centerDialogue(),M.atto_image.dialogue=n,n.show()}},r=M.util.image_url("e/insert_edit_image","core");M.editor_atto.add_toolbar_button(e.elementid,"image",r,e.group,t),M.editor_atto.currentlyselected=M.editor_atto.currentlyselected||{},M.editor_atto.currentlyselected[e.elementid]=null,M.editor_atto.on("atto:selectionchanged",function(e){M.editor_atto.selection_filter_matches(e.elementid,n.TAGS,e.selectedNodes,!1)?(M.editor_atto.add_widget_highlight(e.elementid,"image"),M.editor_atto.currentlyselected[e.elementid]=e.selectedNodes):(M.editor_atto.remove_widget_highlight(e.elementid,"image"),M.editor_atto.currentlyselected[e.elementid]=null)})},open_filepicker:function(e){var t=this.getAttribute("data-editor");e.preventDefault(),M.editor_atto.show_filepicker(t,"image",M.atto_image.filepicker_callback)},filepicker_callback:function(t){if(t.url!==""){var n=e.one("#"+r.INPUTURL);n.set("value",t.url);var i=new Image;i.onload=function(){e.one("#"+r.INPUTWIDTH).set("value",this.width),e.one("#"+r.INPUTHEIGHT).set("value",this.height),e.one("#"+r.IMAGEPREVIEW).set("src",this.src),e.one("#"+r.IMAGEPREVIEW).setStyle("display","inline")},i.src=t.url}},url_changed:function(){var t=e.one("#"+r.INPUTURL);if(t.get("value")!==""){var n=new Image;n.onload=function(){var t;t=e.one("#"+r.INPUTWIDTH),t.get("value")===""&&t.set("value",this.width),t=e.one("#"+r.INPUTHEIGHT),t.get("value")===""&&t.set("value",this.height),t=e.one("#"+r.IMAGEPREVIEW),t.set("src",this.src),t.setStyle("display","inline")},n.src=t.get("value")}},set_image:function(t,n){var i=t.currentTarget.ancestor(".atto_form"),s=i.one("#"+r.INPUTURL).get("value"),o=i.one("#"+r.INPUTALT).get("value"),u=i.one("#"+r.INPUTWIDTH).get("value"),a=i.one("#"+r.INPUTHEIGHT).get("value"),f=i.one("#"+r.INPUTALIGNMENT).get("value"),l=i.one("#"+r.IMAGEPRESENTATION).get("checked"),c;t.preventDefault();if(o===""&&!l){i.one("#"+r.IMAGEALTWARNING).setStyle("display","block"),i.one("#"+r.INPUTALT).setAttribute("aria-invalid",!0),i.one("#"+r.IMAGEPRESENTATION).setAttribute("aria-invalid",!0);return}i.one("#"+r.IMAGEALTWARNING).setStyle("display","none"),i.one("#"+r.INPUTALT).setAttribute("aria-invalid",!1),i.one("#"+r.IMAGEPRESENTATION).setAttribute("aria-invalid",!1),M.atto_image.dialogue.hide(),M.editor_atto.focus(n),s!==""&&(this.lastselectedimage?M.editor_atto.set_selection(M.editor_atto.get_selection_from_node(this.lastselectedimage)):M.editor_atto.set_selection(M.atto_image.selection),c='<img src="'+e.Escape.html(s)+'" alt="'+e.Escape.html(o)+'"',u&&(c+=' width="'+e.Escape.html(u)+'"'),a&&(c+=' height="'+e.Escape.html(a)+'"'),l&&(c+=' role="presentation"'),f&&(c+=' style="'+f+'"'),c+="/>",M.editor_atto.insert_html_at_focus_point(c),M.editor_atto.text_updated(n))},_get_selected_image_properties:function(e){var t={src:null,alt:null,width:null,height:null,align:null,display:"inline",presentation:!1},n=M.editor_atto.currentlyselected[e],r,s,o,u,a;n&&(n=n.filter("img"));if(n&&n.size()){s=n.item(0),this.lastselectedimage=s,a=s.getAttribute("style"),o=parseInt(s.getAttribute("width"),10),u=parseInt(s.getAttribute("height"),10),o>0&&(t.width=o),u>0&&(t.height=u);for(r in i)if(i[r].test(a)){t.align=i[r];break}return t.src=s.getAttribute("src"),t.alt=s.getAttribute("alt")||"",t.presentation=s.get("role")==="presentation",t}return!1},get_form_content:function(t){var n={alignment:M.util.get_string("alignment","atto_image"),alt:M.util.get_string("enteralt","atto_image"),browse:M.util.get_string("browserepositories","atto_image"),create:M.util.get_string("createimage","atto_image"),height:M.util.get_string("height","atto_image"),presentation:M.util.get_string("presentation","atto_image"),presentationrequired:M.util.get_string("presentationoraltrequired","atto_image"),preview:M.util.get_string("preview","atto_image"),width:M.util.get_string("width","atto_image"),url:M.util.get_string("enterurl","atto_image")},s,o;s='<form class="atto_form"><label for="'+r.INPUTURL+'">'+n.url+"</label>"+'<input class="fullwidth" type="url" value="" id="'+r.INPUTURL+'" size="32"/>'+"<br/>",M.editor_atto.can_show_filepicker
+(t,"image")&&(s+='<button id="'+r.IMAGEBROWSER+'" data-editor="'+e.Escape.html(t)+'" type="button">'+n.browse+"</button>"+"<br/>"),s+='<div style="display:none" role="alert" id="'+r.IMAGEALTWARNING+'" class="warning">'+n.presentationrequired+"</div>"+'<label for="'+r.INPUTALT+'">'+n.alt+"</label>"+'<input class="fullwidth" type="text" value="" id="'+r.INPUTALT+'" size="32"/>'+"<br/>",s+='<input type="checkbox" id="'+r.IMAGEPRESENTATION+'"/>'+'<label class="sameline" for="'+r.IMAGEPRESENTATION+'">'+n.presentation+"</label>"+"<br/>",s+='<label class="sameline" for="'+r.INPUTWIDTH+'">'+n.width+"</label>"+'<input type="text" value="" id="'+r.INPUTWIDTH+'" size="10"/>'+"<br/>",s+='<label class="sameline" for="'+r.INPUTHEIGHT+'">'+n.height+"</label>"+'<input type="text" value="" id="'+r.INPUTHEIGHT+'" size="10"/>'+"<br/>",s+='<label class="sameline" for="'+r.INPUTALIGNMENT+'">'+n.alignment+"</label>"+'<select id="'+r.INPUTALIGNMENT+'">';for(o in i)s+=i[o].to_select_option();s+="</select><br/>",s+='<label for="'+r.IMAGEPREVIEW+'">'+n.preview+"</label>"+'<img src="#" width="200" id="'+r.IMAGEPREVIEW+'" alt="" style="display: none;"/>'+'<div class="mdl-align">'+"<br/>",s+='<button id="'+r.INPUTSUMBIT+'" type="submit">'+n.create+"</button>"+"</div>"+"</form>";var u=e.Node.create(s);return this._apply_image_properties(u,t),u.one("#"+r.INPUTURL).on("blur",M.atto_image.url_changed,this),u.one("#"+r.INPUTSUMBIT).on("click",M.atto_image.set_image,this,t),M.editor_atto.can_show_filepicker(t,"image")&&u.one("#"+r.IMAGEBROWSER).on("click",M.atto_image.open_filepicker),u},_apply_image_properties:function(e,t){var n=this._get_selected_image_properties(t),i=e.one("#"+r.IMAGEPREVIEW);if(n===!1){i.setStyle("display","none");return}n.align&&n.align.apply(i),n.display&&i.setStyle("display",n.display),n.width&&e.one("#"+r.INPUTWIDTH).set("value",n.width),n.height&&e.one("#"+r.INPUTHEIGHT).set("value",n.height),n.alt&&e.one("#"+r.INPUTALT).set("value",n.alt),n.src&&(e.one("#"+r.INPUTURL).set("value",n.src),i.setAttribute("src",n.src)),n.presentation&&e.one("#"+r.IMAGEPRESENTATION).set("checked","checked")}}},"@VERSION@",{requires:["node","escape"]});
diff --git a/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button.js b/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button.js
index 566b652527d..0dd4d4aee30 100644
--- a/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button.js
+++ b/lib/editor/atto/plugins/image/yui/build/moodle-atto_image-button/moodle-atto_image-button.js
@@ -145,6 +145,7 @@ M.atto_image = M.atto_image || {
     dialogue: null,
     selection: null,
     currentlyselected : {},
+    lastselectedimage : null,
     init: function(params) {
         var display_chooser = function(e, elementid) {
             e.preventDefault();
@@ -183,7 +184,7 @@ M.atto_image = M.atto_image || {
         // This includes cursor changes, we check if the button should be active or not, based
         // on the text selection.
         M.editor_atto.on('atto:selectionchanged', function(e) {
-            if (M.editor_atto.selection_filter_matches(e.elementid, SELECTORS.TAGS, e.selectedNodes)) {
+            if (M.editor_atto.selection_filter_matches(e.elementid, SELECTORS.TAGS, e.selectedNodes, false)) {
                 M.editor_atto.add_widget_highlight(e.elementid, 'image');
                 M.editor_atto.currentlyselected[e.elementid] = e.selectedNodes;
             } else {
@@ -263,8 +264,13 @@ M.atto_image = M.atto_image || {
 
         M.atto_image.dialogue.hide();
 
+        M.editor_atto.focus(elementid);
         if (url !== '') {
-            M.editor_atto.set_selection(M.atto_image.selection);
+            if (this.lastselectedimage) {
+                M.editor_atto.set_selection(M.editor_atto.get_selection_from_node(this.lastselectedimage));
+            } else {
+                M.editor_atto.set_selection(M.atto_image.selection);
+            }
             imagehtml = '<img src="' + Y.Escape.html(url) + '" alt="' + Y.Escape.html(alt) + '"';
 
             if (width) {
@@ -310,14 +316,14 @@ M.atto_image = M.atto_image || {
             images = M.editor_atto.currentlyselected[elementid],
             i, image, width, height, style;
 
-        if (images !== null && images.size() > 0) {
+        if (images) {
+            images = images.filter('img');
+        }
+
+        if (images && images.size()) {
             image = images.item(0);
-            for (i in images) {
-                if (images[i].test('img')) {
-                    image = images[i];
-                    break;
-                }
-            }
+            this.lastselectedimage = image;
+
             style = image.getAttribute('style');
             width = parseInt(image.getAttribute('width'), 10);
             height = parseInt(image.getAttribute('height'), 10);
diff --git a/lib/editor/atto/plugins/image/yui/src/button/js/button.js b/lib/editor/atto/plugins/image/yui/src/button/js/button.js
index 2b77cc803ce..f0b0e9fb8cd 100644
--- a/lib/editor/atto/plugins/image/yui/src/button/js/button.js
+++ b/lib/editor/atto/plugins/image/yui/src/button/js/button.js
@@ -143,6 +143,7 @@ M.atto_image = M.atto_image || {
     dialogue: null,
     selection: null,
     currentlyselected : {},
+    lastselectedimage : null,
     init: function(params) {
         var display_chooser = function(e, elementid) {
             e.preventDefault();
@@ -181,7 +182,7 @@ M.atto_image = M.atto_image || {
         // This includes cursor changes, we check if the button should be active or not, based
         // on the text selection.
         M.editor_atto.on('atto:selectionchanged', function(e) {
-            if (M.editor_atto.selection_filter_matches(e.elementid, SELECTORS.TAGS, e.selectedNodes)) {
+            if (M.editor_atto.selection_filter_matches(e.elementid, SELECTORS.TAGS, e.selectedNodes, false)) {
                 M.editor_atto.add_widget_highlight(e.elementid, 'image');
                 M.editor_atto.currentlyselected[e.elementid] = e.selectedNodes;
             } else {
@@ -261,8 +262,13 @@ M.atto_image = M.atto_image || {
 
         M.atto_image.dialogue.hide();
 
+        M.editor_atto.focus(elementid);
         if (url !== '') {
-            M.editor_atto.set_selection(M.atto_image.selection);
+            if (this.lastselectedimage) {
+                M.editor_atto.set_selection(M.editor_atto.get_selection_from_node(this.lastselectedimage));
+            } else {
+                M.editor_atto.set_selection(M.atto_image.selection);
+            }
             imagehtml = '<img src="' + Y.Escape.html(url) + '" alt="' + Y.Escape.html(alt) + '"';
 
             if (width) {
@@ -308,14 +314,14 @@ M.atto_image = M.atto_image || {
             images = M.editor_atto.currentlyselected[elementid],
             i, image, width, height, style;
 
-        if (images !== null && images.size() > 0) {
+        if (images) {
+            images = images.filter('img');
+        }
+
+        if (images && images.size()) {
             image = images.item(0);
-            for (i in images) {
-                if (images[i].test('img')) {
-                    image = images[i];
-                    break;
-                }
-            }
+            this.lastselectedimage = image;
+
             style = image.getAttribute('style');
             width = parseInt(image.getAttribute('width'), 10);
             height = parseInt(image.getAttribute('height'), 10);
diff --git a/lib/editor/atto/thirdpartylibs.xml b/lib/editor/atto/thirdpartylibs.xml
new file mode 100644
index 00000000000..06b6014f949
--- /dev/null
+++ b/lib/editor/atto/thirdpartylibs.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<libraries>
+  <library>
+    <location>yui/src/rangy/js/*.*</location>
+    <name>Rangy</name>
+    <license>MIT</license>
+    <version>1.2.3</version>
+    <licenseversion></licenseversion>
+  </library>
+</libraries>
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
index e74821b9625..0da12917fc3 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
@@ -84,7 +84,7 @@ M.editor_atto = M.editor_atto || {
         'tfoot',
         'ul',
         'video'],
-        
+
     PLACEHOLDER_FONTNAME: 'yui-tmp',
     ALL_NODES_SELECTOR: '[style],font[face]',
     FONT_FAMILY: 'fontFamily',
@@ -140,13 +140,6 @@ M.editor_atto = M.editor_atto || {
      */
     lastselection : null,
 
-    /**
-     * The number of selection ranges when the selection was last recorded.
-     * @param lastselectioncount
-     * @type integer
-     */
-    lastselectioncount : 0,
-
     /**
      * Set to true after the first editor has been initialised.
      *
@@ -569,22 +562,17 @@ M.editor_atto = M.editor_atto || {
      * @return bool
      */
     is_active : function(elementid) {
-        var selection = M.editor_atto.get_selection();
+        var range = rangy.createRange(),
+            editable = M.editor_atto.get_editable_node(elementid),
+            selection = rangy.getSelection();
 
-        if (selection.length && selection.pop) {
-            selection = selection.pop();
+        if (!selection.rangeCount) {
+            return false;
         }
 
-        var node = null;
-        if (selection.parentElement) {
-            node = Y.one(selection.parentElement());
-        } else {
-            node = Y.one(selection.startContainer);
-        }
+        range.selectNode(editable.getDOMNode());
 
-        var editable = M.editor_atto.get_editable_node(elementid);
-
-        return node && editable.contains(node);
+        return range.intersectsRange(selection.getRangeAt(0));
     },
 
     /**
@@ -886,23 +874,12 @@ M.editor_atto = M.editor_atto || {
     /**
      * Create a cross browser selection object that represents a yui node.
      * @param Node yui node for the selection
-     * @return range (browser dependent)
+     * @return rangy.Range[]
      */
     get_selection_from_node: function(node) {
-        var range;
-
-        if (window.getSelection) {
-            range = document.createRange();
-
-            range.setStartBefore(node.getDOMNode());
-            range.setEndAfter(node.getDOMNode());
-            return [range];
-        } else if (document.selection) {
-            range = document.body.createTextRange();
-            range.moveToElementText(node.getDOMNode());
-            return range;
-        }
-        return false;
+        var range = rangy.createRange();
+        range.selectNode(node.getDOMNode());
+        return [range];
     },
 
     /**
@@ -913,10 +890,7 @@ M.editor_atto = M.editor_atto || {
     save_selection : function(event) {
         var elementid = event.elementid;
         if (elementid && this.is_active(elementid)) {
-            var sel = this.get_selection();
-            if (sel.length > 0) {
-                this.selections[elementid] = sel;
-            }
+            this.selections[elementid] = this.get_selection();
         }
     },
 
@@ -936,23 +910,10 @@ M.editor_atto = M.editor_atto || {
 
     /**
      * Get the selection object that can be passed back to set_selection.
-     * @return Range[]|TextRange[] All browsers except IE8 and less will get Range[], IE8 and less will get TextRange[]
+     * @return rangy.Range[]
      */
     get_selection : function() {
-        if (window.getSelection) {
-            var sel = window.getSelection();
-            var ranges = [], i = 0;
-            for (i = 0; i < sel.rangeCount; i++) {
-                ranges.push(sel.getRangeAt(i));
-            }
-            return ranges;
-        } else if (document.selection) {
-            // IE < 9
-            if (document.selection.createRange) {
-                return [document.selection.createRange()];
-            }
-        }
-        return false;
+        return rangy.getSelection().getAllRanges();
     },
 
     /**
@@ -961,18 +922,7 @@ M.editor_atto = M.editor_atto || {
      * @return boolean
      */
     selection_contains_node : function(node) {
-        // TODO: This will break in IE11 . IE11 doesn't provide containsNode and document.selection has been removed.
-        var range, sel;
-        if (window.getSelection) {
-            sel = window.getSelection();
-            if (sel.containsNode) {
-                return sel.containsNode(node.getDOMNode(), true);
-            }
-        }
-        sel = document.selection.createRange();
-        range = sel.duplicate();
-        range.moveToElementText(node.getDOMNode());
-        return sel.inRange(range);
+        return rangy.getSelection().containsNode(node.getDOMNode(), true);
     },
 
     /**
@@ -982,124 +932,72 @@ M.editor_atto = M.editor_atto || {
      * @param {String} elementid
      * @param {String} selector
      * @param {NodeList} selectednodes (Optional) - for performance we can pass this instead of looking it up.
+     * @param {Boolean} requireall (Optional) - used to specify that any "any" match is good enough. Defaults to true.
      * @return {Boolean}
      */
-    selection_filter_matches : function(elementid, selector, selectednodes) {
+    selection_filter_matches : function(elementid, selector, selectednodes, requireall) {
+        if ((typeof requireall) === 'undefined') {
+            requireall = true;
+        }
         if (!selectednodes) {
             // Find this because it was not passed as a param.
             selectednodes = M.editor_atto.get_selected_nodes(elementid);
         }
-        var allmatch = selectednodes.size() > 0;
+        var allmatch = selectednodes.size() > 0, anymatch = false;
         selectednodes.each(function(node){
             // Check each node, if it doesn't match the tags AND is not within the specified tags then fail this thing.
-            if (!allmatch || !node.ancestor(selector, true, '#' + elementid + "editable")) {
-                allmatch = false;
+            if (requireall) {
+                // Check for at least one failure.
+                if (!allmatch || !node.ancestor(selector, true, '#' + elementid + "editable")) {
+                    allmatch = false;
+                }
+            } else {
+                // Check for at least one match.
+                if (!anymatch && node.ancestor(selector, true, '#' + elementid + "editable")) {
+                    anymatch = true;
+                }
             }
         }, this);
-        return allmatch;
+        if (requireall) {
+            return allmatch;
+        } else {
+            return anymatch;
+        }
     },
 
     /**
      * Get the deepest possible list of nodes in the current selection.
      *
-     * Presently this method contains logic to work out what nodes are "selected" by the user.
-     * The user selection may take the form of:
-     *  - text : selected text within a single node, such as double clicking a word.
-     *  - A node : the user has clicked an image or media object that is selectable by clicking upon an element.
-     *  - text + nodes: the user has dragged or used shift + arrows to select a body of content that may include
-     *      both text and/or nodes.
-     * To work out the selected nodes we look at the start and end node. If they are the same then there is only one node
-     * containing selected content.
-     * If they don't match we get the common ancestor of the start and end nodes, and then iterate all child nodes recording
-     * all nodes that appear after the start node and before the end node.
-     *
-     * YUI deal with this in a totally different way to us, they have a method getSelected that gets the selected nodes by
-     * exec'ing a command to add fontname, and then find all nodes that have been affected. They remove the fontname property
-     * before returning the nodes.
-     *
      * @param {String} elementid
      * @return Y.NodeList
      */
     get_selected_nodes : function(elementid) {
-        var nodes = [],
-            results = new Y.NodeList(),
-            points = [],
+        var results = new Y.NodeList(),
+            nodes,
+            selection,
             range,
-            i,
-            sel,
-            start,
-            end,
-            parent,
-            values;
+            node,
+            i;
 
-        // The window.getSelection method is available from IE9 onwards and for all other browsers.
-        if (window.getSelection) {
-            sel = window.getSelection();
-            for (i = 0; i < sel.rangeCount; i++) {
-                range = sel.getRangeAt(i);
-                start = new Y.Node(range.startContainer);
-                end = new Y.Node(range.endContainer);
-                if (start.compareTo(end)) {
-                    // The start and end node are the same node. Only one node is selected. Easy!
-                    nodes.push(end);
-                } else {
-                    // The start and end node are not the same, we have 2..n nodes selected, we'll need to work them out.
-                    // For the time being record them as a pair of points along with the common ancestor.
-                    // First up we need to check the order of the nodes, we need them in the order they appear in the DOM
-                    // however the selection may have been rtl or ltr and in the case of rtl we need to switch the order.
-                    values = this._fix_selected_nodes_from_range(
-                        start,
-                        range.startOffset,
-                        end,
-                        range.endOffset
-                    );
-                    // Ok start and end are in order. Yay!
-                    start = values[0];
-                    end = values[2];
-                    // We calculate the common ancestor here as we should be able to get it from the range object.
-                    if (range.commonAncestorContainer) {
-                        parent = range.commonAncestorContainer;
-                    } else if (range.parentElement) {
-                        parent = range.parentElement();
-                    } else {
-                        parent = this._get_common_parent_from_nodes(start, end);
-                    }
-                    points.push([
-                        start,
-                        end,
-                        parent
-                    ]);
-                }
-            }
-        } else if (document.selection && document.selection.createRange) {
-            // The document.selection.createRange is available in IE only, versions 5.5 through 10 (not IE11).
-            // However s window.getSelection exists in IE9+ this code will only execute in IE 5.5 -> IE 8.
-            // http://msdn.microsoft.com/en-us/library/ie/ms535869(v=vs.85).aspx
-            range = document.selection.createRange();
-            // Create range will return either TextRange object from the current text selection, or a controlRange
-            // collection from the control selection.
-            if (document.selection.type === "Control") {
-                // Its a control collection, well this is easy, its an array of Nodes. All the work has been done for us.
-                for (i = 0; i < range.length; i++) {
-                    nodes.push(new Y.Node(range(i)));
-                }
-            } else {
-                // Its a TextRange, in which case its a text element (nodeType 3) and its parent will be the node containing the
-                // selection.
-                nodes.push(new Y.Node(range.parentElement()));
-            }
+        selection = rangy.getSelection();
+
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        } else {
+            // Empty range.
+            range = rangy.createRange();
         }
-        // Ok we have two array as this point.
-        //  - Nodes is an array containing nodes that are currently highlighted by selection.
-        //  - Points is an array containing start, end, and parent nodes.
-        // For each item in the points array we need to find all nodes containing selected content.
-        for (i in points) {
-            nodes = nodes.concat(this._get_all_nodes_between.apply(this, points[i]));
+
+        if (range.collapsed) {
+            range.selectNode(range.commonAncestorContainer);
         }
-        // Finally for each node we've determined is highlighted we need to check it belongs to the current editable area.
-        for (i in nodes) {
-            if (results.indexOf(nodes[i]) === -1 && nodes[i].ancestor('#' + elementid + "editable")) {
-                results.push(nodes[i]);
+
+        nodes = range.getNodes();
+
+        for (i = 0; i < nodes.length; i++) {
+            node = Y.one(nodes[i]);
+            if (node.ancestor('#' + elementid + "editable")) {
+                results.push(node);
             }
         }
         return results;
@@ -1116,47 +1014,25 @@ M.editor_atto = M.editor_atto || {
      * @returns {Boolean}
      */
     _has_selection_changed : function(e) {
-        var sel,
-            i,
+        var selection = rangy.getSelection(),
             range,
-            bits = [],
-            selectedstr = '',
-            selectioncount = 0;
-        if (window.getSelection) {
-            // Hoorah - working with the alternative is horrid..
-            sel = window.getSelection();
-            selectioncount = sel.rangeCount;
-            for (i = 0; i < selectioncount; i++) {
-                range = sel.getRangeAt(i);
-                bits.push(range.startOffset);
-                bits.push(range.endOffset);
-                bits.push(this._get_node_identifier(range.startContainer));
-                bits.push(this._get_node_identifier(range.endContainer));
-                bits.push('&');
-            }
-        } else if (document.selection && document.selection.createRange) {
-            range = document.selection.createRange();
-            if (range !== null) {
-                if (document.selection.type === "Control") {
-                    // Is a controlRange: http://msdn.microsoft.com/en-us/library/ie/hh826021(v=vs.85).aspx
-                    selectioncount = range.length;
-                    for (i = 0; i < selectioncount; i++) {
-                        bits.push(this._get_node_identifier(range(i)));
-                    }
-                } else {
-                    // Is a TextRange: http://msdn.microsoft.com/en-us/library/ie/ms535872(v=vs.85).aspx
-                    selectioncount = 1;
-                    bits.push(this._get_node_identifier(range.parentElement()));
-                }
+            changed = false;
+
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        } else {
+            // Empty range.
+            range = rangy.createRange();
+        }
+
+        if (this.lastselection) {
+            if (!this.lastselection.equals(range)) {
+                changed = true;
+                return this._fire_selectionchanged(e);
             }
         }
-        selectedstr = bits.join('|');
-        if (this.lastselection !== selectedstr) {
-            this.lastselection = selectedstr;
-            this.lastselectioncount = selectioncount;
-            return this._fire_selectionchanged(e);
-        }
-        return false;
+        this.lastselection = range;
+        return changed;
     },
 
     /**
@@ -1182,230 +1058,25 @@ M.editor_atto = M.editor_atto || {
         });
     },
 
-    /**
-     * Returns the best identifier for the given node that can be found. May not be unique.
-     *
-     * @method _get_node_identifier
-     * @private
-     * @param {Node} node
-     * @returns {string}
-     */
-    _get_node_identifier : function(node) {
-        var uid = (node.nodeType === 3) ? node.length : node.id;
-        return uid || node.className || node.nodeName;
-    },
-
-    /**
-     * Fixes the selection range, normalising it, ordering the start and end by dom position, and correcting for noteType and offset
-     *
-     * Note about offsets:
-     *   If the container is a Node of type Text, Comment, or CDATASection, then the offset is the number of characters from the
-     *   start of the container to the boundary point of the Range.
-     *   For other Node types, the offset is the number of child nodes between the start of the container and the boundary
-     *   point of the Range.
-     *
-     * @method _fix_selected_nodes_from_range
-     * @private
-     * @param {Node} a
-     * @param {integer} aoffset
-     * @param {Node} b
-     * @param {integer} boffset
-     * @returns {[Node, integer, Node, integer]}
-     */
-    _fix_selected_nodes_from_range : function(a, aoffset, b, boffset) {
-        var first,
-            firstoffset,
-            second,
-            secondoffset,
-            searchfunc,
-            acheckend = true,
-            bcheckend = true,
-            checkend = true;
-
-        if (a.get('nodeType') === 1) {
-            a = a.get('childNodes').item(aoffset);
-            acheckend = false;
-        }
-        if (b.get('nodeType') === 1 && boffset > 0) {
-            b = b.get('childNodes').item(boffset - 1);
-            bcheckend = false;
-        }
-        if (a._yuid === b._yuid) {
-            if (aoffset < boffset) {
-                first = a;
-                firstoffset = aoffset;
-                second = b;
-                secondoffset = boffset;
-                checkend = bcheckend;
-            } else {
-                first = b;
-                firstoffset = boffset;
-                second = a;
-                secondoffset = aoffset;
-                checkend = acheckend;
-            }
-        } else {
-            if (a.contains(b)) {
-                first = a;
-                firstoffset = aoffset;
-                second = b;
-                secondoffset = boffset;
-                checkend = bcheckend;
-            } else if (b.contains(a)) {
-                first = b;
-                firstoffset = boffset;
-                second = a;
-                secondoffset = aoffset;
-                checkend = acheckend;
-            } else {
-                searchfunc = function find_first(nodes, x, y) {
-                    var i, result;
-                    for (i in nodes) {
-                        if (nodes[i] === x.getDOMNode()) {
-                            return x;
-                        } else if (nodes[i] === y.getDOMNode()) {
-                            return y;
-                        } else if (nodes[i].nodeType === 1) {
-                            result = find_first(nodes[i].childNodes, x, y);
-                            if (result !== false) {
-                                return result;
-                            }
-                        }
-                    }
-                    return false;
-                };
-                first = searchfunc(this._get_common_parent_from_nodes(a, b).get('childNodes'), a, b) || a;
-                if (first === a) {
-                    firstoffset = aoffset;
-                    second = b;
-                    secondoffset = boffset;
-                    checkend = bcheckend;
-                } else {
-                    firstoffset = boffset;
-                    second = a;
-                    secondoffset = aoffset;
-                    checkend = acheckend;
-                }
-            }
-            if (checkend && second.get('nodeType') === 3 && secondoffset === 0 && second.previous('*', true)) {
-                second = second.previous();
-            }
-        }
-        return [first, firstoffset, second, secondoffset];
-    },
-
-    /**
-     * Returns an array containing all of the nodes in the Dom between the two reference nodes.
-     *
-     * @method _get_all_nodes_between
-     * @private
-     * @param {Node} a
-     * @param {Node} b
-     * @param {Node} parent The common parent of a and b
-     * @returns {Node[]}
-     */
-    _get_all_nodes_between : function(a, b, parent) {
-        var startfound = false,
-            endfound = false,
-            nodes = [],
-            parenthasselectedtext = false;
-        if (a === b || a.contains(b)) {
-            return [a];
-        }
-        if (b.contains(a)) {
-            return [b];
-        }
-        if (!parent) {
-            return [a, b];
-        }
-
-        nodes.push(a);
-        parent.get('childNodes').each(function(node) {
-            if (endfound) {
-                return;
-            }
-            if (!startfound && node === a) {
-                startfound = true;
-            } else if (startfound && !endfound) {
-                if (node === b) {
-                    endfound = true;
-                } else {
-                    if (node.get('nodeType') === 3) {
-                        parenthasselectedtext = true;
-                    } else {
-                        nodes.push(node);
-                        nodes = nodes.compact(node.all('*'));
-                    }
-                }
-            }
-        });
-        nodes.push(b);
-
-        if (parenthasselectedtext) {
-            nodes.unshift(parent);
-        }
-
-        return nodes;
-    },
-
-    /**
-     * Returns the common parent of the two given nodes.
-     *
-     * @method _get_common_parent_from_nodes
-     * @private
-     * @param {Node} a
-     * @param {Node} b
-     * @returns {Node}
-     */
-    _get_common_parent_from_nodes : function(a, b) {
-        var aparents = a.ancestors('*', false, '.' + CSS.CONTENT),
-            bparents = b.ancestors('*', false, '.' + CSS.CONTENT),
-            node;
-        while ((node = aparents.pop())) {
-            if (bparents.indexOf(node) !== -1) {
-                return node;
-            }
-        }
-        return a.ancestor('.' + CSS.CONTENT);
-    },
-
     /**
      * Get the dom node representing the common anscestor of the selection nodes.
      * @return DOMNode or false
      */
     get_selection_parent_node : function() {
-        var selection = M.editor_atto.get_selection();
-        if (selection.length) {
-            selection = selection.pop();
+        var selection = rangy.getSelection();
+        if (selection.rangeCount) {
+            return selection.getRangeAt(0).commonAncestorContainer;
         }
-
-        if (selection.commonAncestorContainer) {
-            return selection.commonAncestorContainer;
-        } else if (selection.parentElement) {
-            return selection.parentElement();
-        }
-        // No selection
         return false;
     },
 
     /**
      * Set the current selection. Used to restore a selection.
+     * @param rangy.Range[] ranges - List of ranges in selection.
      */
-    set_selection : function(selection) {
-        var sel, i;
-
-        if (window.getSelection) {
-            sel = window.getSelection();
-            sel.removeAllRanges();
-            for (i = 0; i < selection.length; i++) {
-                sel.addRange(selection[i]);
-            }
-        } else if (document.selection) {
-            // IE < 9
-            if (selection.select) {
-                selection.select();
-            }
-        }
+    set_selection : function(ranges) {
+        var selection = rangy.getSelection();
+        selection.setRanges(ranges);
     },
 
     /**
@@ -1552,19 +1223,20 @@ M.editor_atto = M.editor_atto || {
 
     /**
      * Inserts the given HTML into the editable content at the currently focused point.
-     * @param {String} html
+     * @param String html
      */
     insert_html_at_focus_point: function(html) {
         // We check document.selection here as the insertHTML exec command wan't available in IE until version 11.
         // In IE document.selection was removed at from version 11. Making it an easy affordable check.
-        if (document.selection && document.selection.createRange) {
-            var range = document.selection.createRange();
-            if (range.pasteHTML) {
-                range.pasteHTML(html);
-            }
-        } else {
-            // All other browsers are great!
-            document.execCommand('insertHTML', false, html);
+        var selection = rangy.getSelection(),
+            range,
+            node = Y.Node.create(html);
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        }
+        if (range) {
+            range.deleteContents();
+            range.insertNode(node.getDOMNode());
         }
     },
 
@@ -1775,6 +1447,7 @@ Y.NodeList.importMethod(Y.Node.prototype, "cleanHTML");
         "event-simulate",
         "event-custom",
         "yui-throttle",
-        "moodle-core-notification-dialogue"
+        "moodle-core-notification-dialogue",
+        "moodle-editor_atto-rangy"
     ]
 });
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
index 9d345e74c13..669e8d0afb6 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
@@ -1,4 +1,3 @@
-YUI.add("moodle-editor_atto-editor",function(e,t){function i(){var e=this.getHTML(),t=[{regex:/<!--[\s\S]*?-->/gi,replace:""},{regex:/<\\?\?xml[^>]*>/gi,replace:""},{regex:/<\/?\w+:[^>]*>/gi,replace:""},{regex:/\s*MSO[-:][^;"']*;?/gi,replace:""},{regex:/<span[^>]*>(&nbsp;|\s)*<\/span>/gi,replace:""},{regex:/class="Mso[^"]*"/gi,replace:""},{regex:/<(\/?title|\/?meta|\/?style|\/?st\d|\/?head|\/?font|\/?html|\/?body|!\[)[^>]*?>/gi,replace:""},{regex:new RegExp(String.fromCharCode(8220),"gi"),replace:'"'},{regex:new RegExp(String.fromCharCode(8216),"gi"),replace:"'"},{regex:new RegExp(String.fromCharCode(8217),"gi"),replace:"'"},{regex:new RegExp(String.fromCharCode(8211),"gi"),replace:"-"},{regex:new RegExp(String.fromCharCode(8212),"gi"),replace:"--"},{regex:new RegExp(String.fromCharCode(189),"gi"),replace:"1/2"},{regex:new RegExp(String.fromCharCode(188),"gi"),replace:"1/4"},{regex:new RegExp(String.fromCharCode(190),"gi"),replace:"3/4"},{regex:new RegExp(String.fromCharCode(169),"gi"),replace:"(c)"},{regex:new RegExp(String.fromCharCode(174),"gi"),replace:"(r)"},{regex:new RegExp(String.fromCharCode(8230),"gi"),replace:"..."}],n=0,r;for(n=0;n<t.length;n++)r=t[n],e=e.replace(r.regex,r.replace);return this.setHTML(e),this}CSS={CONTENT:"editor_atto_content",CONTENTWRAPPER:"editor_atto_content_wrap",TOOLBAR:"editor_atto_toolbar",WRAPPER:"editor_atto",HIGHLIGHT:"highlight"},M.editor_atto=M.editor_atto||{BLOCK_TAGS:["address","article","aside","audio","blockquote","canvas","dd","div","dl","fieldset","figcaption","figure","footer","form","h1","h2","h3","h4","h5","h6","header","hgroup","hr","noscript","ol","output","p","pre","section","table","tfoot","ul","video"],PLACEHOLDER_FONTNAME:"yui-tmp",ALL_NODES_SELECTOR:"[style],font[face]",FONT_FAMILY:"fontFamily",buttonhandlers:{},textupdatedhandlers:{},menus:{},menuhandlers:{},filepickeroptions:{},widgets:{},selections:{},focusfromclick:!1,eventspublished:!1,lastselection:null,lastselectioncount:0,firstinit:!0,showhide_menu_handler:function(t){t.preventDefault();var n=this.getAttribute("disabled"),r=this.getAttribute("data-menu"),i=M.editor_atto.menus[r],s=i.get("bodyContent");if(i.get("visible")||n)i.hide(),s.detach("clickoutside");else{s.on("clickoutside",function(e){e.target.ancestor()!==this&&e.target!==this&&i.get("visible")&&(s.detach("clickoutside"),i.hide())},this),i.align(e.one(e.config.doc.body),[e.WidgetPositionAlign.TL,e.WidgetPositionAlign.BL]),i.show();var o=t.target.ancestor("button",!0).one("img");i.align(o,[e.WidgetPositionAlign.TL,e.WidgetPositionAlign.BL]),i.get("boundingBox").one("a").focus()}},buttonclicked_handler:function(t){var n=this.getAttribute("data-editor"),r=this.getAttribute("data-plugin"),i=this.getAttribute("data-button"),s=this.getAttribute("data-handler"),o=M.editor_atto.menus[r+"_"+n],u=M.editor_atto.get_toolbar_node(n),a=u.getAttribute("aria-activedescendant");a&&(current=e.one("#"+a),current.setAttribute("tabindex","-1")),this.setAttribute("tabindex",0),u.setAttribute("aria-activedescendant",this.generateID()),o&&o.hide();if(M.editor_atto.is_enabled(n,r,i))return s=M.editor_atto.buttonhandlers[s],s(t,n)},disable_all_widgets:function(e){var t,n,r=M.editor_atto.get_toolbar_node(e);for(t in M.editor_atto.widgets)n=r.one(".atto_"+t+"_button"),n&&n.setAttribute("disabled","true")},get_textarea_node:function(t){return e.one(document.getElementById(t))},get_toolbar_node:function(t){return e.one(document.getElementById(t+"_toolbar"))},get_editable_node:function(t){return e.one(document.getElementById(t+"editable"))},is_enabled:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");return!i.hasAttribute("disabled")},is_highlighted:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");return!i.hasClass(CSS.HIGHLIGHT)},enable_widget:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");i&&i.removeAttribute("disabled")},add_widget_highlight:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");i&&i.addClass(CSS.HIGHLIGHT)},remove_widget_highlight:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");i&&i.removeClass(CSS.HIGHLIGHT)},enable_all_widgets:function(e){var t,n;for(t in M.editor_atto.widgets)n=M.editor_atto.get_toolbar_node(e).one(".atto_"+t+"_button"),n&&n.removeAttribute("disabled")},add_text_updated_handler:function(e,t){e in M.editor_atto.textupdatedhandlers||(M.editor_atto.textupdatedhandlers[e]=[]),M.editor_atto.textupdatedhandlers[e].push(t)},add_toolbar_menu:function(t,n,r,i,s,o,u,a,f){var l=M.editor_atto.get_toolbar_node(t),c=l.one(".atto_group."+i+"_group"),h,p,d,v;o?d=n+"_"+o:(o="",d=n),u||(u=M.util.get_string("pluginname","atto_"+n)),typeof a=="undefined"&&(a="14"),typeof f=="undefined"&&(f="transparent"),c||(c=e.Node.create('<div class="atto_group '+i+'_group"></div>'),l.append(c)),v=M.util.image_url("t/expanded","moodle"),p=e.Node.create('<button class="atto_'+d+'_button atto_hasmenu" '+'data-editor="'+e.Escape.html(t)+'" '+'tabindex="-1" '+'type="button" '+'data-menu="'+d+"_"+t+'" '+'title="'+e.Escape.html(u)+'">'+'<img class="icon" aria-hidden="true" role="presentation" width="16" height="16" '+'style="background-color:'+f+';" src="'+r+'"/>'+'<img class="icon" aria-hidden="true" role="presentation" width="16" height="16" src="'+v+'"/>'+"</button>"),c.append(p),h=l.getAttribute("aria-activedescendant"),h||(p.setAttribute("tabindex","0"),l.setAttribute("aria-activedescendant",p.generateID())),M.editor_atto.widgets[d]=d;var m=e.Node.create('<div class="atto_'+d+"_menu"+' atto_menu" data-editor="'+e.Escape.html(t)+'"'+' style="min-width:'+(a-2)+'em"'+'"></div>'),g=0,y={};for(g=0;g<s.length;g++)y=s[g],m.append(e.Node.create('<div class="atto_menuentry"><a href="#" class="atto_'+d+"_action_"+g+'" '+'data-editor="'+e.Escape.html(t)+'" '+'data-plugin="'+e.Escape.
-html(n)+'" '+'data-button="'+e.Escape.html(o)+'" '+'data-handler="'+e.Escape.html(d+"_action_"+g)+'">'+y.text+"</a>"+"</div>")),M.editor_atto.buttonhandlers[n+"_action_"+g]||(e.one("body").delegate("click",M.editor_atto.buttonclicked_handler,".atto_"+d+"_action_"+g),e.one("body").delegate("key",M.editor_atto.buttonclicked_handler,"32,enter",".atto_"+d+"_action_"+g),M.editor_atto.buttonhandlers[d+"_action_"+g]=y.handler);M.editor_atto.buttonhandlers[d]||(e.one("body").delegate("click",M.editor_atto.showhide_menu_handler,".atto_"+d+"_button"),M.editor_atto.buttonhandlers[d]=!0);var b=new M.core.dialogue({bodyContent:m,visible:!1,width:a+"em",closeButton:!1,center:!1,render:!0});M.editor_atto.menus[d+"_"+t]=b,b.align(p,[e.WidgetPositionAlign.TL,e.WidgetPositionAlign.BL]),b.headerNode.hide()},add_toolbar_button:function(t,n,r,i,s,o,u){var a=M.editor_atto.get_toolbar_node(t),f=a.one(".atto_group."+i+"_group"),l,c,h;o?c=n+"_"+o:(o="",c=n),u||(u=M.util.get_string("pluginname","atto_"+n)),f||(f=e.Node.create('<div class="atto_group '+i+'_group"></div>'),a.append(f)),l=e.Node.create('<button class="atto_'+c+'_button" '+'data-editor="'+e.Escape.html(t)+'" '+'data-plugin="'+e.Escape.html(n)+'" '+'data-button="'+e.Escape.html(o)+'" '+'tabindex="-1" '+'data-handler="'+e.Escape.html(c)+'" '+'title="'+e.Escape.html(u)+'">'+'<img class="icon" aria-hidden="true" role="presentation" width="16" height="16" src="'+r+'"/>'+"</button>"),f.append(l),h=a.getAttribute("aria-activedescendant"),h||(l.setAttribute("tabindex","0"),a.setAttribute("aria-activedescendant",l.generateID())),M.editor_atto.buttonhandlers[c]||(e.one("body").delegate("click",M.editor_atto.buttonclicked_handler,".atto_"+c+"_button"),M.editor_atto.buttonhandlers[c]=s),M.editor_atto.widgets[c]=c},is_active:function(t){var n=M.editor_atto.get_selection();n.length&&n.pop&&(n=n.pop());var r=null;n.parentElement?r=e.one(n.parentElement()):r=e.one(n.startContainer);var i=M.editor_atto.get_editable_node(t);return r&&i.contains(r)},focus:function(e){M.editor_atto.get_editable_node(e).focus()},update_from_textarea:function(t){var n=M.editor_atto.get_editable_node(t),r=M.editor_atto.get_textarea_node(t);n.setHTML(""),n.append(r.get("value")),n.cleanHTML(),n.getHTML()===""&&(e.UA.ie&&e.UA.ie<10?n.setHTML("<p></p>"):n.setHTML("<p><br></p>"))},init:function(t){var n=this.firstinit;this.firstinit=!1;var r=e.Node.create('<div class="'+CSS.WRAPPER+'" />'),i=e.Node.create('<div id="'+t.elementid+'editable" '+'contenteditable="true" '+'role="textbox" '+'spellcheck="true" '+'aria-live="off" '+'class="'+CSS.CONTENT+'" '+'data-editor="'+t.elementid+'" />'),s=e.Node.create('<div class="'+CSS.TOOLBAR+'" id="'+t.elementid+'_toolbar" role="toolbar" aria-live="off"/>'),o=e.Node.create('<div class="'+CSS.CONTENTWRAPPER+'" />'),u=M.editor_atto.get_textarea_node(t.elementid),a=e.one('[for="'+t.elementid+'"]');a&&(a.generateID(),i.setAttribute("aria-labelledby",a.get("id")),s.setAttribute("aria-labelledby",a.get("id"))),o.appendChild(i),r.appendChild(s),r.appendChild(o),i.setStyle("minHeight",1.2*u.getAttribute("rows")+"em"),u.get("parentNode").insert(r,u),M.editor_atto.disable_css_styling(),u.hide(),this.update_from_textarea(t.elementid),this.publish_events(),i.on("atto:selectionchanged",this.save_selection,this,t.elementid),n&&(this.publish_events(),this.on("atto:selectionchanged",this.save_selection,this)),i.on("focus",this.restore_selection,this,t.elementid),i.on("mousedown",function(){this.focusfromclick=!0},this),i.on("blur",function(){this.focusfromclick=!1,this.text_updated(t.elementid)},this),document.queryCommandSupported("DefaultParagraphSeparator")&&document.execCommand("DefaultParagraphSeparator",!1,"p"),e.one(e.config.doc.body).delegate("key",this.keyboard_navigation,"down:37,39","#"+t.elementid+"_toolbar",this,t.elementid),M.editor_atto.filepickeroptions[t.elementid]=t.filepickeroptions;var f,l,c,h;for(f=0;f<t.plugins.length;f++){c=t.plugins[f].group;for(l=0;l<t.plugins[f].plugins.length;l++)h=t.plugins[f].plugins[l],h.params.elementid=t.elementid,h.params.group=c,M["atto_"+h.name].init(h.params)}for(f=0;f<t.plugins.length;f++){c=t.plugins[f].group;for(l=0;l<t.plugins[f].plugins.length;l++)h=t.plugins[f].plugins[l],h.params.elementid=t.elementid,h.params.group=c,typeof M["atto_"+h.name].after_init!="undefined"&&M["atto_"+h.name].after_init(h.params)}},publish_events:function(){this.eventspublished||(e.publish("atto:selectionchanged",{prefix:"atto"}),e.delegate(["mouseup","keyup","focus"],this._has_selection_changed,document.body,"."+CSS.CONTENT,this),this.eventspublished=!0)},text_updated:function(e){var t=M.editor_atto.get_textarea_node(e),n=this.get_clean_html(e);t.set("value",n),t.simulate("change");var r=0;if(e in M.editor_atto.textupdatedhandlers)for(r=0;r<M.editor_atto.textupdatedhandlers[e].length;r++){var i=M.editor_atto.textupdatedhandlers[e][r];i(e)}},get_clean_html:function(t){var n=M.editor_atto.get_editable_node(t).cloneNode(!0);return e.each(n.all("[id]"),function(e){var t=e.get("id");t.indexOf("yui")===0&&e.removeAttribute("id")}),n.cleanHTML(),(n.getHTML()==="<p></p>"||n.getHTML()==="<p><br></p>")&&n.setHTML(""),n.getHTML()},keyboard_navigation:function(t,n){var r,i,s,o,u=M.editor_atto.get_toolbar_node(n);t.preventDefault(),r=u.all("empty"),u.all(".atto_group").each(function(e){e.hasAttribute("hidden")||(r=r.concat(e.all("button")))}),s=u.getAttribute("aria-activedescendant");if(!s)return;i=e.one("#"+s),i.setAttribute("tabindex","-1"),o=r.indexOf(i),t.keyCode===37?(o--,o<0&&(o=r.size()-1)):(o++,o>=r.size()&&(o=0)),i=r.item(o),i.setAttribute("tabindex","0"),i.focus(),u.setAttribute("aria-activedescendant",i.generateID())},can_show_filepicker:function(e,t){var n=M.editor_atto.filepickeroptions[e];return typeof n[t]!="undefined"},show_filepicker:function(t,n,r){e.use("core_filepicker",function(e){var i=M.editor_atto.filepickeroptions[t][n];i.formcallback=r,M.core_filepicker.show(e,i)})},get_selection_from_node:function(e){var t;return window.getSelection?
-(t=document.createRange(),t.setStartBefore(e.getDOMNode()),t.setEndAfter(e.getDOMNode()),[t]):document.selection?(t=document.body.createTextRange(),t.moveToElementText(e.getDOMNode()),t):!1},save_selection:function(e){var t=e.elementid;if(t&&this.is_active(t)){var n=this.get_selection();n.length>0&&(this.selections[t]=n)}},restore_selection:function(e,t){this.focusfromclick||typeof this.selections[t]!="undefined"&&this.set_selection(this.selections[t]),this.focusfromclick=!1},get_selection:function(){if(window.getSelection){var e=window.getSelection(),t=[],n=0;for(n=0;n<e.rangeCount;n++)t.push(e.getRangeAt(n));return t}return document.selection&&document.selection.createRange?[document.selection.createRange()]:!1},selection_contains_node:function(e){var t,n;if(window.getSelection){n=window.getSelection();if(n.containsNode)return n.containsNode(e.getDOMNode(),!0)}return n=document.selection.createRange(),t=n.duplicate(),t.moveToElementText(e.getDOMNode()),n.inRange(t)},selection_filter_matches:function(e,t,n){n||(n=M.editor_atto.get_selected_nodes(e));var r=n.size()>0;return n.each(function(n){if(!r||!n.ancestor(t,!0,"#"+e+"editable"))r=!1},this),r},get_selected_nodes:function(t){var n=[],r=new e.NodeList,i=[],s,o,u,a,f,l,c;if(window.getSelection){u=window.getSelection();for(o=0;o<u.rangeCount;o++)s=u.getRangeAt(o),a=new e.Node(s.startContainer),f=new e.Node(s.endContainer),a.compareTo(f)?n.push(f):(c=this._fix_selected_nodes_from_range(a,s.startOffset,f,s.endOffset),a=c[0],f=c[2],s.commonAncestorContainer?l=s.commonAncestorContainer:s.parentElement?l=s.parentElement():l=this._get_common_parent_from_nodes(a,f),i.push([a,f,l]))}else if(document.selection&&document.selection.createRange){s=document.selection.createRange();if(document.selection.type==="Control")for(o=0;o<s.length;o++)n.push(new e.Node(s(o)));else n.push(new e.Node(s.parentElement()))}for(o in i)n=n.concat(this._get_all_nodes_between.apply(this,i[o]));for(o in n)r.indexOf(n[o])===-1&&n[o].ancestor("#"+t+"editable")&&r.push(n[o]);return r},_has_selection_changed:function(e){var t,n,r,i=[],s="",o=0;if(window.getSelection){t=window.getSelection(),o=t.rangeCount;for(n=0;n<o;n++)r=t.getRangeAt(n),i.push(r.startOffset),i.push(r.endOffset),i.push(this._get_node_identifier(r.startContainer)),i.push(this._get_node_identifier(r.endContainer)),i.push("&")}else if(document.selection&&document.selection.createRange){r=document.selection.createRange();if(r!==null)if(document.selection.type==="Control"){o=r.length;for(n=0;n<o;n++)i.push(this._get_node_identifier(r(n)))}else o=1,i.push(this._get_node_identifier(r.parentElement()))}return s=i.join("|"),this.lastselection!==s?(this.lastselection=s,this.lastselectioncount=o,this._fire_selectionchanged(e)):!1},_fire_selectionchanged:function(e){var t=e.currentTarget.get("id"),n=t.substring(0,t.length-8),r=this.get_selected_nodes(n);this.fire("atto:selectionchanged",{event:e,elementid:n,selectedNodes:r})},_get_node_identifier:function(e){var t=e.nodeType===3?e.length:e.id;return t||e.className||e.nodeName},_fix_selected_nodes_from_range:function(e,t,n,r){var i,s,o,u,a,f=!0,l=!0,c=!0;return e.get("nodeType")===1&&(e=e.get("childNodes").item(t),f=!1),n.get("nodeType")===1&&r>0&&(n=n.get("childNodes").item(r-1),l=!1),e._yuid===n._yuid?t<r?(i=e,s=t,o=n,u=r,c=l):(i=n,s=r,o=e,u=t,c=f):(e.contains(n)?(i=e,s=t,o=n,u=r,c=l):n.contains(e)?(i=n,s=r,o=e,u=t,c=f):(a=function h(e,t,n){var r,i;for(r in e){if(e[r]===t.getDOMNode())return t;if(e[r]===n.getDOMNode())return n;if(e[r].nodeType===1){i=h(e[r].childNodes,t,n);if(i!==!1)return i}}return!1},i=a(this._get_common_parent_from_nodes(e,n).get("childNodes"),e,n)||e,i===e?(s=t,o=n,u=r,c=l):(s=r,o=e,u=t,c=f)),c&&o.get("nodeType")===3&&u===0&&o.previous("*",!0)&&(o=o.previous())),[i,s,o,u]},_get_all_nodes_between:function(e,t,n){var r=!1,i=!1,s=[],o=!1;return e===t||e.contains(t)?[e]:t.contains(e)?[t]:n?(s.push(e),n.get("childNodes").each(function(n){if(i)return;!r&&n===e?r=!0:r&&!i&&(n===t?i=!0:n.get("nodeType")===3?o=!0:(s.push(n),s=s.compact(n.all("*"))))}),s.push(t),o&&s.unshift(n),s):[e,t]},_get_common_parent_from_nodes:function(e,t){var n=e.ancestors("*",!1,"."+CSS.CONTENT),r=t.ancestors("*",!1,"."+CSS.CONTENT),i;while(i=n.pop())if(r.indexOf(i)!==-1)return i;return e.ancestor("."+CSS.CONTENT)},get_selection_parent_node:function(){var e=M.editor_atto.get_selection();return e.length&&(e=e.pop()),e.commonAncestorContainer?e.commonAncestorContainer:e.parentElement?e.parentElement():!1},set_selection:function(e){var t,n;if(window.getSelection){t=window.getSelection(),t.removeAllRanges();for(n=0;n<e.length;n++)t.addRange(e[n])}else document.selection&&e.select&&e.select()},format_selection_block:function(t,n,r){var i=M.editor_atto.get_selection_parent_node(),s,o,u,a,f,l;if(!i)return;s=M.editor_atto.get_editable_node(t),i=e.one(i),o=i.ancestor(function(e){var t=e.get("tagName");return t&&(t=t.toLowerCase()),e===s||t==="td"||t==="th"},!0),o&&(s=o),u=i.ancestor(M.editor_atto.BLOCK_TAGS.join(", "),!0),u&&(f=u.ancestor(function(e){return e===s},!1),f||(u=!1)),u||(a=e.Node.create("<p></p>"),s.get("childNodes").each(function(e){a.append(e.remove())}),s.append(a),u=a),n&&n!==""&&(l=e.Node.create("<"+n+"></"+n+">"),l.setAttrs(u.getAttrs()),u.get("childNodes").each(function(e){e.remove(),l.append(e)}),u.replace(l),u=l),r&&u.setAttrs(r);var c=M.editor_atto.get_selection_from_node(u);return M.editor_atto.set_selection(c),u},disable_css_styling:function(){try{document.execCommand("styleWithCSS",0,!1)}catch(e){try{document.execCommand("useCSS",0,!0)}catch(t){try{document.execCommand("styleWithCSS",!1,!1)}catch(n){}}}},enable_css_styling:function(){try{document.execCommand("styleWithCSS",0,!0)}catch(e){try{document.execCommand("useCSS",0,!1)}catch(t){try{document.execCommand("styleWithCSS",!1,!0)}catch(n){}}}},insert_html_at_focus_point:function(e){if(document.selection&&document.selection.createRange){var t=document.selection.createRange();t.pasteHTML&&t.pasteHTML(e)}else document
-.execCommand("insertHTML",!1,e)},toggle_inline_selection_class:function(t,n){var r=M.editor_atto.get_selection_parent_node(),i=e.one("body"),s,o=[],u,a,f,l=0;if(!r)return;document.execCommand("fontname",!1,M.editor_atto.PLACEHOLDER_FONTNAME),s=i.all(M.editor_atto.ALL_NODES_SELECTOR),s.each(function(t,n){t.getStyle(M.editor_atto.FONT_FAMILY)===M.editor_atto.PLACEHOLDER_FONTNAME&&(t.setStyle(M.editor_atto.FONT_FAMILY,""),t.compareTo(i)||o.push(e.Node.getDOMNode(s.item(n))))});for(l=0;l<o.length;l++){a=e.one(o[l]),u=a.ancestor(".editor_atto_content span"),u?a=u:(f=e.Node.create("<span></span>"),f.append(o[l].innerHTML),a.replace(f),a=f);for(var c=0;c<n.length;c++)a.toggleClass(n[c])}}},e.augment(M.editor_atto,e.EventTarget);var n="Controlmenu",r;r=function(e){e.draggable=!1,e.center=!1,e.width="auto",e.lightbox=!1,e.footerContent="",e.hideOn=[{eventName:"clickoutside"}],r.superclass.constructor.apply(this,[e])},e.extend(r,M.core.dialogue,{initializer:function(t){var n,i,s;r.superclass.initializer.call(this,t),s=this.get("boundingBox"),s.addClass("editor_atto_controlmenu"),n=this.bodyNode,i=e.Node.create("<h3/>"),i.addClass("accesshide"),i.setHTML(this.get("headerText")),n.prepend(i)}},{NAME:n,ATTRS:{headerText:{value:""}}}),M.editor_atto=M.editor_atto||{},M.editor_atto.controlmenu=r,e.Node.addMethod("cleanHTML",i),e.NodeList.importMethod(e.Node.prototype,"cleanHTML")},"@VERSION@",{requires:["node","io","overlay","escape","event","event-simulate","event-custom","yui-throttle","moodle-core-notification-dialogue"]});
+YUI.add("moodle-editor_atto-editor",function(e,t){function i(){var e=this.getHTML(),t=[{regex:/<!--[\s\S]*?-->/gi,replace:""},{regex:/<\\?\?xml[^>]*>/gi,replace:""},{regex:/<\/?\w+:[^>]*>/gi,replace:""},{regex:/\s*MSO[-:][^;"']*;?/gi,replace:""},{regex:/<span[^>]*>(&nbsp;|\s)*<\/span>/gi,replace:""},{regex:/class="Mso[^"]*"/gi,replace:""},{regex:/<(\/?title|\/?meta|\/?style|\/?st\d|\/?head|\/?font|\/?html|\/?body|!\[)[^>]*?>/gi,replace:""},{regex:new RegExp(String.fromCharCode(8220),"gi"),replace:'"'},{regex:new RegExp(String.fromCharCode(8216),"gi"),replace:"'"},{regex:new RegExp(String.fromCharCode(8217),"gi"),replace:"'"},{regex:new RegExp(String.fromCharCode(8211),"gi"),replace:"-"},{regex:new RegExp(String.fromCharCode(8212),"gi"),replace:"--"},{regex:new RegExp(String.fromCharCode(189),"gi"),replace:"1/2"},{regex:new RegExp(String.fromCharCode(188),"gi"),replace:"1/4"},{regex:new RegExp(String.fromCharCode(190),"gi"),replace:"3/4"},{regex:new RegExp(String.fromCharCode(169),"gi"),replace:"(c)"},{regex:new RegExp(String.fromCharCode(174),"gi"),replace:"(r)"},{regex:new RegExp(String.fromCharCode(8230),"gi"),replace:"..."}],n=0,r;for(n=0;n<t.length;n++)r=t[n],e=e.replace(r.regex,r.replace);return this.setHTML(e),this}CSS={CONTENT:"editor_atto_content",CONTENTWRAPPER:"editor_atto_content_wrap",TOOLBAR:"editor_atto_toolbar",WRAPPER:"editor_atto",HIGHLIGHT:"highlight"},M.editor_atto=M.editor_atto||{BLOCK_TAGS:["address","article","aside","audio","blockquote","canvas","dd","div","dl","fieldset","figcaption","figure","footer","form","h1","h2","h3","h4","h5","h6","header","hgroup","hr","noscript","ol","output","p","pre","section","table","tfoot","ul","video"],PLACEHOLDER_FONTNAME:"yui-tmp",ALL_NODES_SELECTOR:"[style],font[face]",FONT_FAMILY:"fontFamily",buttonhandlers:{},textupdatedhandlers:{},menus:{},menuhandlers:{},filepickeroptions:{},widgets:{},selections:{},focusfromclick:!1,eventspublished:!1,lastselection:null,firstinit:!0,showhide_menu_handler:function(t){t.preventDefault();var n=this.getAttribute("disabled"),r=this.getAttribute("data-menu"),i=M.editor_atto.menus[r],s=i.get("bodyContent");if(i.get("visible")||n)i.hide(),s.detach("clickoutside");else{s.on("clickoutside",function(e){e.target.ancestor()!==this&&e.target!==this&&i.get("visible")&&(s.detach("clickoutside"),i.hide())},this),i.align(e.one(e.config.doc.body),[e.WidgetPositionAlign.TL,e.WidgetPositionAlign.BL]),i.show();var o=t.target.ancestor("button",!0).one("img");i.align(o,[e.WidgetPositionAlign.TL,e.WidgetPositionAlign.BL]),i.get("boundingBox").one("a").focus()}},buttonclicked_handler:function(t){var n=this.getAttribute("data-editor"),r=this.getAttribute("data-plugin"),i=this.getAttribute("data-button"),s=this.getAttribute("data-handler"),o=M.editor_atto.menus[r+"_"+n],u=M.editor_atto.get_toolbar_node(n),a=u.getAttribute("aria-activedescendant");a&&(current=e.one("#"+a),current.setAttribute("tabindex","-1")),this.setAttribute("tabindex",0),u.setAttribute("aria-activedescendant",this.generateID()),o&&o.hide();if(M.editor_atto.is_enabled(n,r,i))return s=M.editor_atto.buttonhandlers[s],s(t,n)},disable_all_widgets:function(e){var t,n,r=M.editor_atto.get_toolbar_node(e);for(t in M.editor_atto.widgets)n=r.one(".atto_"+t+"_button"),n&&n.setAttribute("disabled","true")},get_textarea_node:function(t){return e.one(document.getElementById(t))},get_toolbar_node:function(t){return e.one(document.getElementById(t+"_toolbar"))},get_editable_node:function(t){return e.one(document.getElementById(t+"editable"))},is_enabled:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");return!i.hasAttribute("disabled")},is_highlighted:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");return!i.hasClass(CSS.HIGHLIGHT)},enable_widget:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");i&&i.removeAttribute("disabled")},add_widget_highlight:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");i&&i.addClass(CSS.HIGHLIGHT)},remove_widget_highlight:function(e,t,n){var r=t;n&&(r+="_"+n);var i=M.editor_atto.get_toolbar_node(e).one(".atto_"+r+"_button");i&&i.removeClass(CSS.HIGHLIGHT)},enable_all_widgets:function(e){var t,n;for(t in M.editor_atto.widgets)n=M.editor_atto.get_toolbar_node(e).one(".atto_"+t+"_button"),n&&n.removeAttribute("disabled")},add_text_updated_handler:function(e,t){e in M.editor_atto.textupdatedhandlers||(M.editor_atto.textupdatedhandlers[e]=[]),M.editor_atto.textupdatedhandlers[e].push(t)},add_toolbar_menu:function(t,n,r,i,s,o,u,a,f){var l=M.editor_atto.get_toolbar_node(t),c=l.one(".atto_group."+i+"_group"),h,p,d,v;o?d=n+"_"+o:(o="",d=n),u||(u=M.util.get_string("pluginname","atto_"+n)),typeof a=="undefined"&&(a="14"),typeof f=="undefined"&&(f="transparent"),c||(c=e.Node.create('<div class="atto_group '+i+'_group"></div>'),l.append(c)),v=M.util.image_url("t/expanded","moodle"),p=e.Node.create('<button class="atto_'+d+'_button atto_hasmenu" '+'data-editor="'+e.Escape.html(t)+'" '+'tabindex="-1" '+'type="button" '+'data-menu="'+d+"_"+t+'" '+'title="'+e.Escape.html(u)+'">'+'<img class="icon" aria-hidden="true" role="presentation" width="16" height="16" '+'style="background-color:'+f+';" src="'+r+'"/>'+'<img class="icon" aria-hidden="true" role="presentation" width="16" height="16" src="'+v+'"/>'+"</button>"),c.append(p),h=l.getAttribute("aria-activedescendant"),h||(p.setAttribute("tabindex","0"),l.setAttribute("aria-activedescendant",p.generateID())),M.editor_atto.widgets[d]=d;var m=e.Node.create('<div class="atto_'+d+"_menu"+' atto_menu" data-editor="'+e.Escape.html(t)+'"'+' style="min-width:'+(a-2)+'em"'+'"></div>'),g=0,y={};for(g=0;g<s.length;g++)y=s[g],m.append(e.Node.create('<div class="atto_menuentry"><a href="#" class="atto_'+d+"_action_"+g+'" '+'data-editor="'+e.Escape.html(t)+'" '+'data-plugin="'+e.Escape.html(n)+'" '+'data-button="'+
+e.Escape.html(o)+'" '+'data-handler="'+e.Escape.html(d+"_action_"+g)+'">'+y.text+"</a>"+"</div>")),M.editor_atto.buttonhandlers[n+"_action_"+g]||(e.one("body").delegate("click",M.editor_atto.buttonclicked_handler,".atto_"+d+"_action_"+g),e.one("body").delegate("key",M.editor_atto.buttonclicked_handler,"32,enter",".atto_"+d+"_action_"+g),M.editor_atto.buttonhandlers[d+"_action_"+g]=y.handler);M.editor_atto.buttonhandlers[d]||(e.one("body").delegate("click",M.editor_atto.showhide_menu_handler,".atto_"+d+"_button"),M.editor_atto.buttonhandlers[d]=!0);var b=new M.core.dialogue({bodyContent:m,visible:!1,width:a+"em",closeButton:!1,center:!1,render:!0});M.editor_atto.menus[d+"_"+t]=b,b.align(p,[e.WidgetPositionAlign.TL,e.WidgetPositionAlign.BL]),b.headerNode.hide()},add_toolbar_button:function(t,n,r,i,s,o,u){var a=M.editor_atto.get_toolbar_node(t),f=a.one(".atto_group."+i+"_group"),l,c,h;o?c=n+"_"+o:(o="",c=n),u||(u=M.util.get_string("pluginname","atto_"+n)),f||(f=e.Node.create('<div class="atto_group '+i+'_group"></div>'),a.append(f)),l=e.Node.create('<button class="atto_'+c+'_button" '+'data-editor="'+e.Escape.html(t)+'" '+'data-plugin="'+e.Escape.html(n)+'" '+'data-button="'+e.Escape.html(o)+'" '+'tabindex="-1" '+'data-handler="'+e.Escape.html(c)+'" '+'title="'+e.Escape.html(u)+'">'+'<img class="icon" aria-hidden="true" role="presentation" width="16" height="16" src="'+r+'"/>'+"</button>"),f.append(l),h=a.getAttribute("aria-activedescendant"),h||(l.setAttribute("tabindex","0"),a.setAttribute("aria-activedescendant",l.generateID())),M.editor_atto.buttonhandlers[c]||(e.one("body").delegate("click",M.editor_atto.buttonclicked_handler,".atto_"+c+"_button"),M.editor_atto.buttonhandlers[c]=s),M.editor_atto.widgets[c]=c},is_active:function(e){var t=rangy.createRange(),n=M.editor_atto.get_editable_node(e),r=rangy.getSelection();return r.rangeCount?(t.selectNode(n.getDOMNode()),t.intersectsRange(r.getRangeAt(0))):!1},focus:function(e){M.editor_atto.get_editable_node(e).focus()},update_from_textarea:function(t){var n=M.editor_atto.get_editable_node(t),r=M.editor_atto.get_textarea_node(t);n.setHTML(""),n.append(r.get("value")),n.cleanHTML(),n.getHTML()===""&&(e.UA.ie&&e.UA.ie<10?n.setHTML("<p></p>"):n.setHTML("<p><br></p>"))},init:function(t){var n=this.firstinit;this.firstinit=!1;var r=e.Node.create('<div class="'+CSS.WRAPPER+'" />'),i=e.Node.create('<div id="'+t.elementid+'editable" '+'contenteditable="true" '+'role="textbox" '+'spellcheck="true" '+'aria-live="off" '+'class="'+CSS.CONTENT+'" '+'data-editor="'+t.elementid+'" />'),s=e.Node.create('<div class="'+CSS.TOOLBAR+'" id="'+t.elementid+'_toolbar" role="toolbar" aria-live="off"/>'),o=e.Node.create('<div class="'+CSS.CONTENTWRAPPER+'" />'),u=M.editor_atto.get_textarea_node(t.elementid),a=e.one('[for="'+t.elementid+'"]');a&&(a.generateID(),i.setAttribute("aria-labelledby",a.get("id")),s.setAttribute("aria-labelledby",a.get("id"))),o.appendChild(i),r.appendChild(s),r.appendChild(o),i.setStyle("minHeight",1.2*u.getAttribute("rows")+"em"),u.get("parentNode").insert(r,u),M.editor_atto.disable_css_styling(),u.hide(),this.update_from_textarea(t.elementid),this.publish_events(),i.on("atto:selectionchanged",this.save_selection,this,t.elementid),n&&(this.publish_events(),this.on("atto:selectionchanged",this.save_selection,this)),i.on("focus",this.restore_selection,this,t.elementid),i.on("mousedown",function(){this.focusfromclick=!0},this),i.on("blur",function(){this.focusfromclick=!1,this.text_updated(t.elementid)},this),document.queryCommandSupported("DefaultParagraphSeparator")&&document.execCommand("DefaultParagraphSeparator",!1,"p"),e.one(e.config.doc.body).delegate("key",this.keyboard_navigation,"down:37,39","#"+t.elementid+"_toolbar",this,t.elementid),M.editor_atto.filepickeroptions[t.elementid]=t.filepickeroptions;var f,l,c,h;for(f=0;f<t.plugins.length;f++){c=t.plugins[f].group;for(l=0;l<t.plugins[f].plugins.length;l++)h=t.plugins[f].plugins[l],h.params.elementid=t.elementid,h.params.group=c,M["atto_"+h.name].init(h.params)}for(f=0;f<t.plugins.length;f++){c=t.plugins[f].group;for(l=0;l<t.plugins[f].plugins.length;l++)h=t.plugins[f].plugins[l],h.params.elementid=t.elementid,h.params.group=c,typeof M["atto_"+h.name].after_init!="undefined"&&M["atto_"+h.name].after_init(h.params)}},publish_events:function(){this.eventspublished||(e.publish("atto:selectionchanged",{prefix:"atto"}),e.delegate(["mouseup","keyup","focus"],this._has_selection_changed,document.body,"."+CSS.CONTENT,this),this.eventspublished=!0)},text_updated:function(e){var t=M.editor_atto.get_textarea_node(e),n=this.get_clean_html(e);t.set("value",n),t.simulate("change");var r=0;if(e in M.editor_atto.textupdatedhandlers)for(r=0;r<M.editor_atto.textupdatedhandlers[e].length;r++){var i=M.editor_atto.textupdatedhandlers[e][r];i(e)}},get_clean_html:function(t){var n=M.editor_atto.get_editable_node(t).cloneNode(!0);return e.each(n.all("[id]"),function(e){var t=e.get("id");t.indexOf("yui")===0&&e.removeAttribute("id")}),n.cleanHTML(),(n.getHTML()==="<p></p>"||n.getHTML()==="<p><br></p>")&&n.setHTML(""),n.getHTML()},keyboard_navigation:function(t,n){var r,i,s,o,u=M.editor_atto.get_toolbar_node(n);t.preventDefault(),r=u.all("empty"),u.all(".atto_group").each(function(e){e.hasAttribute("hidden")||(r=r.concat(e.all("button")))}),s=u.getAttribute("aria-activedescendant");if(!s)return;i=e.one("#"+s),i.setAttribute("tabindex","-1"),o=r.indexOf(i),t.keyCode===37?(o--,o<0&&(o=r.size()-1)):(o++,o>=r.size()&&(o=0)),i=r.item(o),i.setAttribute("tabindex","0"),i.focus(),u.setAttribute("aria-activedescendant",i.generateID())},can_show_filepicker:function(e,t){var n=M.editor_atto.filepickeroptions[e];return typeof n[t]!="undefined"},show_filepicker:function(t,n,r){e.use("core_filepicker",function(e){var i=M.editor_atto.filepickeroptions[t][n];i.formcallback=r,M.core_filepicker.show(e,i)})},get_selection_from_node:function(e){var t=rangy.createRange();return t.selectNode(e.getDOMNode()),[t]},save_selection:function(
+e){var t=e.elementid;t&&this.is_active(t)&&(this.selections[t]=this.get_selection())},restore_selection:function(e,t){this.focusfromclick||typeof this.selections[t]!="undefined"&&this.set_selection(this.selections[t]),this.focusfromclick=!1},get_selection:function(){return rangy.getSelection().getAllRanges()},selection_contains_node:function(e){return rangy.getSelection().containsNode(e.getDOMNode(),!0)},selection_filter_matches:function(e,t,n,r){typeof r=="undefined"&&(r=!0),n||(n=M.editor_atto.get_selected_nodes(e));var i=n.size()>0,s=!1;return n.each(function(n){if(r){if(!i||!n.ancestor(t,!0,"#"+e+"editable"))i=!1}else!s&&n.ancestor(t,!0,"#"+e+"editable")&&(s=!0)},this),r?i:s},get_selected_nodes:function(t){var n=new e.NodeList,r,i,s,o,u;i=rangy.getSelection(),i.rangeCount?s=i.getRangeAt(0):s=rangy.createRange(),s.collapsed&&s.selectNode(s.commonAncestorContainer),r=s.getNodes();for(u=0;u<r.length;u++)o=e.one(r[u]),o.ancestor("#"+t+"editable")&&n.push(o);return n},_has_selection_changed:function(e){var t=rangy.getSelection(),n,r=!1;return t.rangeCount?n=t.getRangeAt(0):n=rangy.createRange(),this.lastselection&&!this.lastselection.equals(n)?(r=!0,this._fire_selectionchanged(e)):(this.lastselection=n,r)},_fire_selectionchanged:function(e){var t=e.currentTarget.get("id"),n=t.substring(0,t.length-8),r=this.get_selected_nodes(n);this.fire("atto:selectionchanged",{event:e,elementid:n,selectedNodes:r})},get_selection_parent_node:function(){var e=rangy.getSelection();return e.rangeCount?e.getRangeAt(0).commonAncestorContainer:!1},set_selection:function(e){var t=rangy.getSelection();t.setRanges(e)},format_selection_block:function(t,n,r){var i=M.editor_atto.get_selection_parent_node(),s,o,u,a,f,l;if(!i)return;s=M.editor_atto.get_editable_node(t),i=e.one(i),o=i.ancestor(function(e){var t=e.get("tagName");return t&&(t=t.toLowerCase()),e===s||t==="td"||t==="th"},!0),o&&(s=o),u=i.ancestor(M.editor_atto.BLOCK_TAGS.join(", "),!0),u&&(f=u.ancestor(function(e){return e===s},!1),f||(u=!1)),u||(a=e.Node.create("<p></p>"),s.get("childNodes").each(function(e){a.append(e.remove())}),s.append(a),u=a),n&&n!==""&&(l=e.Node.create("<"+n+"></"+n+">"),l.setAttrs(u.getAttrs()),u.get("childNodes").each(function(e){e.remove(),l.append(e)}),u.replace(l),u=l),r&&u.setAttrs(r);var c=M.editor_atto.get_selection_from_node(u);return M.editor_atto.set_selection(c),u},disable_css_styling:function(){try{document.execCommand("styleWithCSS",0,!1)}catch(e){try{document.execCommand("useCSS",0,!0)}catch(t){try{document.execCommand("styleWithCSS",!1,!1)}catch(n){}}}},enable_css_styling:function(){try{document.execCommand("styleWithCSS",0,!0)}catch(e){try{document.execCommand("useCSS",0,!1)}catch(t){try{document.execCommand("styleWithCSS",!1,!0)}catch(n){}}}},insert_html_at_focus_point:function(t){var n=rangy.getSelection(),r,i=e.Node.create(t);n.rangeCount&&(r=n.getRangeAt(0)),r&&(r.deleteContents(),r.insertNode(i.getDOMNode()))},toggle_inline_selection_class:function(t,n){var r=M.editor_atto.get_selection_parent_node(),i=e.one("body"),s,o=[],u,a,f,l=0;if(!r)return;document.execCommand("fontname",!1,M.editor_atto.PLACEHOLDER_FONTNAME),s=i.all(M.editor_atto.ALL_NODES_SELECTOR),s.each(function(t,n){t.getStyle(M.editor_atto.FONT_FAMILY)===M.editor_atto.PLACEHOLDER_FONTNAME&&(t.setStyle(M.editor_atto.FONT_FAMILY,""),t.compareTo(i)||o.push(e.Node.getDOMNode(s.item(n))))});for(l=0;l<o.length;l++){a=e.one(o[l]),u=a.ancestor(".editor_atto_content span"),u?a=u:(f=e.Node.create("<span></span>"),f.append(o[l].innerHTML),a.replace(f),a=f);for(var c=0;c<n.length;c++)a.toggleClass(n[c])}}},e.augment(M.editor_atto,e.EventTarget);var n="Controlmenu",r;r=function(e){e.draggable=!1,e.center=!1,e.width="auto",e.lightbox=!1,e.footerContent="",e.hideOn=[{eventName:"clickoutside"}],r.superclass.constructor.apply(this,[e])},e.extend(r,M.core.dialogue,{initializer:function(t){var n,i,s;r.superclass.initializer.call(this,t),s=this.get("boundingBox"),s.addClass("editor_atto_controlmenu"),n=this.bodyNode,i=e.Node.create("<h3/>"),i.addClass("accesshide"),i.setHTML(this.get("headerText")),n.prepend(i)}},{NAME:n,ATTRS:{headerText:{value:""}}}),M.editor_atto=M.editor_atto||{},M.editor_atto.controlmenu=r,e.Node.addMethod("cleanHTML",i),e.NodeList.importMethod(e.Node.prototype,"cleanHTML")},"@VERSION@",{requires:["node","io","overlay","escape","event","event-simulate","event-custom","yui-throttle","moodle-core-notification-dialogue","moodle-editor_atto-rangy"]});
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
index e74821b9625..0da12917fc3 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
@@ -84,7 +84,7 @@ M.editor_atto = M.editor_atto || {
         'tfoot',
         'ul',
         'video'],
-        
+
     PLACEHOLDER_FONTNAME: 'yui-tmp',
     ALL_NODES_SELECTOR: '[style],font[face]',
     FONT_FAMILY: 'fontFamily',
@@ -140,13 +140,6 @@ M.editor_atto = M.editor_atto || {
      */
     lastselection : null,
 
-    /**
-     * The number of selection ranges when the selection was last recorded.
-     * @param lastselectioncount
-     * @type integer
-     */
-    lastselectioncount : 0,
-
     /**
      * Set to true after the first editor has been initialised.
      *
@@ -569,22 +562,17 @@ M.editor_atto = M.editor_atto || {
      * @return bool
      */
     is_active : function(elementid) {
-        var selection = M.editor_atto.get_selection();
+        var range = rangy.createRange(),
+            editable = M.editor_atto.get_editable_node(elementid),
+            selection = rangy.getSelection();
 
-        if (selection.length && selection.pop) {
-            selection = selection.pop();
+        if (!selection.rangeCount) {
+            return false;
         }
 
-        var node = null;
-        if (selection.parentElement) {
-            node = Y.one(selection.parentElement());
-        } else {
-            node = Y.one(selection.startContainer);
-        }
+        range.selectNode(editable.getDOMNode());
 
-        var editable = M.editor_atto.get_editable_node(elementid);
-
-        return node && editable.contains(node);
+        return range.intersectsRange(selection.getRangeAt(0));
     },
 
     /**
@@ -886,23 +874,12 @@ M.editor_atto = M.editor_atto || {
     /**
      * Create a cross browser selection object that represents a yui node.
      * @param Node yui node for the selection
-     * @return range (browser dependent)
+     * @return rangy.Range[]
      */
     get_selection_from_node: function(node) {
-        var range;
-
-        if (window.getSelection) {
-            range = document.createRange();
-
-            range.setStartBefore(node.getDOMNode());
-            range.setEndAfter(node.getDOMNode());
-            return [range];
-        } else if (document.selection) {
-            range = document.body.createTextRange();
-            range.moveToElementText(node.getDOMNode());
-            return range;
-        }
-        return false;
+        var range = rangy.createRange();
+        range.selectNode(node.getDOMNode());
+        return [range];
     },
 
     /**
@@ -913,10 +890,7 @@ M.editor_atto = M.editor_atto || {
     save_selection : function(event) {
         var elementid = event.elementid;
         if (elementid && this.is_active(elementid)) {
-            var sel = this.get_selection();
-            if (sel.length > 0) {
-                this.selections[elementid] = sel;
-            }
+            this.selections[elementid] = this.get_selection();
         }
     },
 
@@ -936,23 +910,10 @@ M.editor_atto = M.editor_atto || {
 
     /**
      * Get the selection object that can be passed back to set_selection.
-     * @return Range[]|TextRange[] All browsers except IE8 and less will get Range[], IE8 and less will get TextRange[]
+     * @return rangy.Range[]
      */
     get_selection : function() {
-        if (window.getSelection) {
-            var sel = window.getSelection();
-            var ranges = [], i = 0;
-            for (i = 0; i < sel.rangeCount; i++) {
-                ranges.push(sel.getRangeAt(i));
-            }
-            return ranges;
-        } else if (document.selection) {
-            // IE < 9
-            if (document.selection.createRange) {
-                return [document.selection.createRange()];
-            }
-        }
-        return false;
+        return rangy.getSelection().getAllRanges();
     },
 
     /**
@@ -961,18 +922,7 @@ M.editor_atto = M.editor_atto || {
      * @return boolean
      */
     selection_contains_node : function(node) {
-        // TODO: This will break in IE11 . IE11 doesn't provide containsNode and document.selection has been removed.
-        var range, sel;
-        if (window.getSelection) {
-            sel = window.getSelection();
-            if (sel.containsNode) {
-                return sel.containsNode(node.getDOMNode(), true);
-            }
-        }
-        sel = document.selection.createRange();
-        range = sel.duplicate();
-        range.moveToElementText(node.getDOMNode());
-        return sel.inRange(range);
+        return rangy.getSelection().containsNode(node.getDOMNode(), true);
     },
 
     /**
@@ -982,124 +932,72 @@ M.editor_atto = M.editor_atto || {
      * @param {String} elementid
      * @param {String} selector
      * @param {NodeList} selectednodes (Optional) - for performance we can pass this instead of looking it up.
+     * @param {Boolean} requireall (Optional) - used to specify that any "any" match is good enough. Defaults to true.
      * @return {Boolean}
      */
-    selection_filter_matches : function(elementid, selector, selectednodes) {
+    selection_filter_matches : function(elementid, selector, selectednodes, requireall) {
+        if ((typeof requireall) === 'undefined') {
+            requireall = true;
+        }
         if (!selectednodes) {
             // Find this because it was not passed as a param.
             selectednodes = M.editor_atto.get_selected_nodes(elementid);
         }
-        var allmatch = selectednodes.size() > 0;
+        var allmatch = selectednodes.size() > 0, anymatch = false;
         selectednodes.each(function(node){
             // Check each node, if it doesn't match the tags AND is not within the specified tags then fail this thing.
-            if (!allmatch || !node.ancestor(selector, true, '#' + elementid + "editable")) {
-                allmatch = false;
+            if (requireall) {
+                // Check for at least one failure.
+                if (!allmatch || !node.ancestor(selector, true, '#' + elementid + "editable")) {
+                    allmatch = false;
+                }
+            } else {
+                // Check for at least one match.
+                if (!anymatch && node.ancestor(selector, true, '#' + elementid + "editable")) {
+                    anymatch = true;
+                }
             }
         }, this);
-        return allmatch;
+        if (requireall) {
+            return allmatch;
+        } else {
+            return anymatch;
+        }
     },
 
     /**
      * Get the deepest possible list of nodes in the current selection.
      *
-     * Presently this method contains logic to work out what nodes are "selected" by the user.
-     * The user selection may take the form of:
-     *  - text : selected text within a single node, such as double clicking a word.
-     *  - A node : the user has clicked an image or media object that is selectable by clicking upon an element.
-     *  - text + nodes: the user has dragged or used shift + arrows to select a body of content that may include
-     *      both text and/or nodes.
-     * To work out the selected nodes we look at the start and end node. If they are the same then there is only one node
-     * containing selected content.
-     * If they don't match we get the common ancestor of the start and end nodes, and then iterate all child nodes recording
-     * all nodes that appear after the start node and before the end node.
-     *
-     * YUI deal with this in a totally different way to us, they have a method getSelected that gets the selected nodes by
-     * exec'ing a command to add fontname, and then find all nodes that have been affected. They remove the fontname property
-     * before returning the nodes.
-     *
      * @param {String} elementid
      * @return Y.NodeList
      */
     get_selected_nodes : function(elementid) {
-        var nodes = [],
-            results = new Y.NodeList(),
-            points = [],
+        var results = new Y.NodeList(),
+            nodes,
+            selection,
             range,
-            i,
-            sel,
-            start,
-            end,
-            parent,
-            values;
+            node,
+            i;
 
-        // The window.getSelection method is available from IE9 onwards and for all other browsers.
-        if (window.getSelection) {
-            sel = window.getSelection();
-            for (i = 0; i < sel.rangeCount; i++) {
-                range = sel.getRangeAt(i);
-                start = new Y.Node(range.startContainer);
-                end = new Y.Node(range.endContainer);
-                if (start.compareTo(end)) {
-                    // The start and end node are the same node. Only one node is selected. Easy!
-                    nodes.push(end);
-                } else {
-                    // The start and end node are not the same, we have 2..n nodes selected, we'll need to work them out.
-                    // For the time being record them as a pair of points along with the common ancestor.
-                    // First up we need to check the order of the nodes, we need them in the order they appear in the DOM
-                    // however the selection may have been rtl or ltr and in the case of rtl we need to switch the order.
-                    values = this._fix_selected_nodes_from_range(
-                        start,
-                        range.startOffset,
-                        end,
-                        range.endOffset
-                    );
-                    // Ok start and end are in order. Yay!
-                    start = values[0];
-                    end = values[2];
-                    // We calculate the common ancestor here as we should be able to get it from the range object.
-                    if (range.commonAncestorContainer) {
-                        parent = range.commonAncestorContainer;
-                    } else if (range.parentElement) {
-                        parent = range.parentElement();
-                    } else {
-                        parent = this._get_common_parent_from_nodes(start, end);
-                    }
-                    points.push([
-                        start,
-                        end,
-                        parent
-                    ]);
-                }
-            }
-        } else if (document.selection && document.selection.createRange) {
-            // The document.selection.createRange is available in IE only, versions 5.5 through 10 (not IE11).
-            // However s window.getSelection exists in IE9+ this code will only execute in IE 5.5 -> IE 8.
-            // http://msdn.microsoft.com/en-us/library/ie/ms535869(v=vs.85).aspx
-            range = document.selection.createRange();
-            // Create range will return either TextRange object from the current text selection, or a controlRange
-            // collection from the control selection.
-            if (document.selection.type === "Control") {
-                // Its a control collection, well this is easy, its an array of Nodes. All the work has been done for us.
-                for (i = 0; i < range.length; i++) {
-                    nodes.push(new Y.Node(range(i)));
-                }
-            } else {
-                // Its a TextRange, in which case its a text element (nodeType 3) and its parent will be the node containing the
-                // selection.
-                nodes.push(new Y.Node(range.parentElement()));
-            }
+        selection = rangy.getSelection();
+
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        } else {
+            // Empty range.
+            range = rangy.createRange();
         }
-        // Ok we have two array as this point.
-        //  - Nodes is an array containing nodes that are currently highlighted by selection.
-        //  - Points is an array containing start, end, and parent nodes.
-        // For each item in the points array we need to find all nodes containing selected content.
-        for (i in points) {
-            nodes = nodes.concat(this._get_all_nodes_between.apply(this, points[i]));
+
+        if (range.collapsed) {
+            range.selectNode(range.commonAncestorContainer);
         }
-        // Finally for each node we've determined is highlighted we need to check it belongs to the current editable area.
-        for (i in nodes) {
-            if (results.indexOf(nodes[i]) === -1 && nodes[i].ancestor('#' + elementid + "editable")) {
-                results.push(nodes[i]);
+
+        nodes = range.getNodes();
+
+        for (i = 0; i < nodes.length; i++) {
+            node = Y.one(nodes[i]);
+            if (node.ancestor('#' + elementid + "editable")) {
+                results.push(node);
             }
         }
         return results;
@@ -1116,47 +1014,25 @@ M.editor_atto = M.editor_atto || {
      * @returns {Boolean}
      */
     _has_selection_changed : function(e) {
-        var sel,
-            i,
+        var selection = rangy.getSelection(),
             range,
-            bits = [],
-            selectedstr = '',
-            selectioncount = 0;
-        if (window.getSelection) {
-            // Hoorah - working with the alternative is horrid..
-            sel = window.getSelection();
-            selectioncount = sel.rangeCount;
-            for (i = 0; i < selectioncount; i++) {
-                range = sel.getRangeAt(i);
-                bits.push(range.startOffset);
-                bits.push(range.endOffset);
-                bits.push(this._get_node_identifier(range.startContainer));
-                bits.push(this._get_node_identifier(range.endContainer));
-                bits.push('&');
-            }
-        } else if (document.selection && document.selection.createRange) {
-            range = document.selection.createRange();
-            if (range !== null) {
-                if (document.selection.type === "Control") {
-                    // Is a controlRange: http://msdn.microsoft.com/en-us/library/ie/hh826021(v=vs.85).aspx
-                    selectioncount = range.length;
-                    for (i = 0; i < selectioncount; i++) {
-                        bits.push(this._get_node_identifier(range(i)));
-                    }
-                } else {
-                    // Is a TextRange: http://msdn.microsoft.com/en-us/library/ie/ms535872(v=vs.85).aspx
-                    selectioncount = 1;
-                    bits.push(this._get_node_identifier(range.parentElement()));
-                }
+            changed = false;
+
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        } else {
+            // Empty range.
+            range = rangy.createRange();
+        }
+
+        if (this.lastselection) {
+            if (!this.lastselection.equals(range)) {
+                changed = true;
+                return this._fire_selectionchanged(e);
             }
         }
-        selectedstr = bits.join('|');
-        if (this.lastselection !== selectedstr) {
-            this.lastselection = selectedstr;
-            this.lastselectioncount = selectioncount;
-            return this._fire_selectionchanged(e);
-        }
-        return false;
+        this.lastselection = range;
+        return changed;
     },
 
     /**
@@ -1182,230 +1058,25 @@ M.editor_atto = M.editor_atto || {
         });
     },
 
-    /**
-     * Returns the best identifier for the given node that can be found. May not be unique.
-     *
-     * @method _get_node_identifier
-     * @private
-     * @param {Node} node
-     * @returns {string}
-     */
-    _get_node_identifier : function(node) {
-        var uid = (node.nodeType === 3) ? node.length : node.id;
-        return uid || node.className || node.nodeName;
-    },
-
-    /**
-     * Fixes the selection range, normalising it, ordering the start and end by dom position, and correcting for noteType and offset
-     *
-     * Note about offsets:
-     *   If the container is a Node of type Text, Comment, or CDATASection, then the offset is the number of characters from the
-     *   start of the container to the boundary point of the Range.
-     *   For other Node types, the offset is the number of child nodes between the start of the container and the boundary
-     *   point of the Range.
-     *
-     * @method _fix_selected_nodes_from_range
-     * @private
-     * @param {Node} a
-     * @param {integer} aoffset
-     * @param {Node} b
-     * @param {integer} boffset
-     * @returns {[Node, integer, Node, integer]}
-     */
-    _fix_selected_nodes_from_range : function(a, aoffset, b, boffset) {
-        var first,
-            firstoffset,
-            second,
-            secondoffset,
-            searchfunc,
-            acheckend = true,
-            bcheckend = true,
-            checkend = true;
-
-        if (a.get('nodeType') === 1) {
-            a = a.get('childNodes').item(aoffset);
-            acheckend = false;
-        }
-        if (b.get('nodeType') === 1 && boffset > 0) {
-            b = b.get('childNodes').item(boffset - 1);
-            bcheckend = false;
-        }
-        if (a._yuid === b._yuid) {
-            if (aoffset < boffset) {
-                first = a;
-                firstoffset = aoffset;
-                second = b;
-                secondoffset = boffset;
-                checkend = bcheckend;
-            } else {
-                first = b;
-                firstoffset = boffset;
-                second = a;
-                secondoffset = aoffset;
-                checkend = acheckend;
-            }
-        } else {
-            if (a.contains(b)) {
-                first = a;
-                firstoffset = aoffset;
-                second = b;
-                secondoffset = boffset;
-                checkend = bcheckend;
-            } else if (b.contains(a)) {
-                first = b;
-                firstoffset = boffset;
-                second = a;
-                secondoffset = aoffset;
-                checkend = acheckend;
-            } else {
-                searchfunc = function find_first(nodes, x, y) {
-                    var i, result;
-                    for (i in nodes) {
-                        if (nodes[i] === x.getDOMNode()) {
-                            return x;
-                        } else if (nodes[i] === y.getDOMNode()) {
-                            return y;
-                        } else if (nodes[i].nodeType === 1) {
-                            result = find_first(nodes[i].childNodes, x, y);
-                            if (result !== false) {
-                                return result;
-                            }
-                        }
-                    }
-                    return false;
-                };
-                first = searchfunc(this._get_common_parent_from_nodes(a, b).get('childNodes'), a, b) || a;
-                if (first === a) {
-                    firstoffset = aoffset;
-                    second = b;
-                    secondoffset = boffset;
-                    checkend = bcheckend;
-                } else {
-                    firstoffset = boffset;
-                    second = a;
-                    secondoffset = aoffset;
-                    checkend = acheckend;
-                }
-            }
-            if (checkend && second.get('nodeType') === 3 && secondoffset === 0 && second.previous('*', true)) {
-                second = second.previous();
-            }
-        }
-        return [first, firstoffset, second, secondoffset];
-    },
-
-    /**
-     * Returns an array containing all of the nodes in the Dom between the two reference nodes.
-     *
-     * @method _get_all_nodes_between
-     * @private
-     * @param {Node} a
-     * @param {Node} b
-     * @param {Node} parent The common parent of a and b
-     * @returns {Node[]}
-     */
-    _get_all_nodes_between : function(a, b, parent) {
-        var startfound = false,
-            endfound = false,
-            nodes = [],
-            parenthasselectedtext = false;
-        if (a === b || a.contains(b)) {
-            return [a];
-        }
-        if (b.contains(a)) {
-            return [b];
-        }
-        if (!parent) {
-            return [a, b];
-        }
-
-        nodes.push(a);
-        parent.get('childNodes').each(function(node) {
-            if (endfound) {
-                return;
-            }
-            if (!startfound && node === a) {
-                startfound = true;
-            } else if (startfound && !endfound) {
-                if (node === b) {
-                    endfound = true;
-                } else {
-                    if (node.get('nodeType') === 3) {
-                        parenthasselectedtext = true;
-                    } else {
-                        nodes.push(node);
-                        nodes = nodes.compact(node.all('*'));
-                    }
-                }
-            }
-        });
-        nodes.push(b);
-
-        if (parenthasselectedtext) {
-            nodes.unshift(parent);
-        }
-
-        return nodes;
-    },
-
-    /**
-     * Returns the common parent of the two given nodes.
-     *
-     * @method _get_common_parent_from_nodes
-     * @private
-     * @param {Node} a
-     * @param {Node} b
-     * @returns {Node}
-     */
-    _get_common_parent_from_nodes : function(a, b) {
-        var aparents = a.ancestors('*', false, '.' + CSS.CONTENT),
-            bparents = b.ancestors('*', false, '.' + CSS.CONTENT),
-            node;
-        while ((node = aparents.pop())) {
-            if (bparents.indexOf(node) !== -1) {
-                return node;
-            }
-        }
-        return a.ancestor('.' + CSS.CONTENT);
-    },
-
     /**
      * Get the dom node representing the common anscestor of the selection nodes.
      * @return DOMNode or false
      */
     get_selection_parent_node : function() {
-        var selection = M.editor_atto.get_selection();
-        if (selection.length) {
-            selection = selection.pop();
+        var selection = rangy.getSelection();
+        if (selection.rangeCount) {
+            return selection.getRangeAt(0).commonAncestorContainer;
         }
-
-        if (selection.commonAncestorContainer) {
-            return selection.commonAncestorContainer;
-        } else if (selection.parentElement) {
-            return selection.parentElement();
-        }
-        // No selection
         return false;
     },
 
     /**
      * Set the current selection. Used to restore a selection.
+     * @param rangy.Range[] ranges - List of ranges in selection.
      */
-    set_selection : function(selection) {
-        var sel, i;
-
-        if (window.getSelection) {
-            sel = window.getSelection();
-            sel.removeAllRanges();
-            for (i = 0; i < selection.length; i++) {
-                sel.addRange(selection[i]);
-            }
-        } else if (document.selection) {
-            // IE < 9
-            if (selection.select) {
-                selection.select();
-            }
-        }
+    set_selection : function(ranges) {
+        var selection = rangy.getSelection();
+        selection.setRanges(ranges);
     },
 
     /**
@@ -1552,19 +1223,20 @@ M.editor_atto = M.editor_atto || {
 
     /**
      * Inserts the given HTML into the editable content at the currently focused point.
-     * @param {String} html
+     * @param String html
      */
     insert_html_at_focus_point: function(html) {
         // We check document.selection here as the insertHTML exec command wan't available in IE until version 11.
         // In IE document.selection was removed at from version 11. Making it an easy affordable check.
-        if (document.selection && document.selection.createRange) {
-            var range = document.selection.createRange();
-            if (range.pasteHTML) {
-                range.pasteHTML(html);
-            }
-        } else {
-            // All other browsers are great!
-            document.execCommand('insertHTML', false, html);
+        var selection = rangy.getSelection(),
+            range,
+            node = Y.Node.create(html);
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        }
+        if (range) {
+            range.deleteContents();
+            range.insertNode(node.getDOMNode());
         }
     },
 
@@ -1775,6 +1447,7 @@ Y.NodeList.importMethod(Y.Node.prototype, "cleanHTML");
         "event-simulate",
         "event-custom",
         "yui-throttle",
-        "moodle-core-notification-dialogue"
+        "moodle-core-notification-dialogue",
+        "moodle-editor_atto-rangy"
     ]
 });
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy-debug.js b/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy-debug.js
new file mode 100644
index 00000000000..05c06c82890
--- /dev/null
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy-debug.js
@@ -0,0 +1,4458 @@
+/**
+ * @license Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+window['rangy'] = (function() {
+
+
+    var OBJECT = "object", FUNCTION = "function", UNDEFINED = "undefined";
+
+    var domRangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
+        "commonAncestorContainer", "START_TO_START", "START_TO_END", "END_TO_START", "END_TO_END"];
+
+    var domRangeMethods = ["setStart", "setStartBefore", "setStartAfter", "setEnd", "setEndBefore",
+        "setEndAfter", "collapse", "selectNode", "selectNodeContents", "compareBoundaryPoints", "deleteContents",
+        "extractContents", "cloneContents", "insertNode", "surroundContents", "cloneRange", "toString", "detach"];
+
+    var textRangeProperties = ["boundingHeight", "boundingLeft", "boundingTop", "boundingWidth", "htmlText", "text"];
+
+    // Subset of TextRange's full set of methods that we're interested in
+    var textRangeMethods = ["collapse", "compareEndPoints", "duplicate", "getBookmark", "moveToBookmark",
+        "moveToElementText", "parentElement", "pasteHTML", "select", "setEndPoint", "getBoundingClientRect"];
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Trio of functions taken from Peter Michaux's article:
+    // http://peter.michaux.ca/articles/feature-detection-state-of-the-art-browser-scripting
+    function isHostMethod(o, p) {
+        var t = typeof o[p];
+        return t == FUNCTION || (!!(t == OBJECT && o[p])) || t == "unknown";
+    }
+
+    function isHostObject(o, p) {
+        return !!(typeof o[p] == OBJECT && o[p]);
+    }
+
+    function isHostProperty(o, p) {
+        return typeof o[p] != UNDEFINED;
+    }
+
+    // Creates a convenience function to save verbose repeated calls to tests functions
+    function createMultiplePropertyTest(testFunc) {
+        return function(o, props) {
+            var i = props.length;
+            while (i--) {
+                if (!testFunc(o, props[i])) {
+                    return false;
+                }
+            }
+            return true;
+        };
+    }
+
+    // Next trio of functions are a convenience to save verbose repeated calls to previous two functions
+    var areHostMethods = createMultiplePropertyTest(isHostMethod);
+    var areHostObjects = createMultiplePropertyTest(isHostObject);
+    var areHostProperties = createMultiplePropertyTest(isHostProperty);
+
+    function isTextRange(range) {
+        return range && areHostMethods(range, textRangeMethods) && areHostProperties(range, textRangeProperties);
+    }
+
+    var api = {
+        version: "1.2.3",
+        initialized: false,
+        supported: true,
+
+        util: {
+            isHostMethod: isHostMethod,
+            isHostObject: isHostObject,
+            isHostProperty: isHostProperty,
+            areHostMethods: areHostMethods,
+            areHostObjects: areHostObjects,
+            areHostProperties: areHostProperties,
+            isTextRange: isTextRange
+        },
+
+        features: {},
+
+        modules: {},
+        config: {
+            alertOnWarn: false,
+            preferTextRange: false
+        }
+    };
+
+    function fail(reason) {
+        window.alert("Rangy not supported in your browser. Reason: " + reason);
+        api.initialized = true;
+        api.supported = false;
+    }
+
+    api.fail = fail;
+
+    function warn(msg) {
+        var warningMessage = "Rangy warning: " + msg;
+        if (api.config.alertOnWarn) {
+            window.alert(warningMessage);
+        } else if (typeof window.console != UNDEFINED && typeof window.console.log != UNDEFINED) {
+            window.console.log(warningMessage);
+        }
+    }
+
+    api.warn = warn;
+
+    if ({}.hasOwnProperty) {
+        api.util.extend = function(o, props) {
+            for (var i in props) {
+                if (props.hasOwnProperty(i)) {
+                    o[i] = props[i];
+                }
+            }
+        };
+    } else {
+        fail("hasOwnProperty not supported");
+    }
+
+    var initListeners = [];
+    var moduleInitializers = [];
+
+    // Initialization
+    function init() {
+        if (api.initialized) {
+            return;
+        }
+        var testRange;
+        var implementsDomRange = false, implementsTextRange = false;
+
+        // First, perform basic feature tests
+
+        if (isHostMethod(document, "createRange")) {
+            testRange = document.createRange();
+            if (areHostMethods(testRange, domRangeMethods) && areHostProperties(testRange, domRangeProperties)) {
+                implementsDomRange = true;
+            }
+            testRange.detach();
+        }
+
+        var body = isHostObject(document, "body") ? document.body : document.getElementsByTagName("body")[0];
+
+        if (body && isHostMethod(body, "createTextRange")) {
+            testRange = body.createTextRange();
+            if (isTextRange(testRange)) {
+                implementsTextRange = true;
+            }
+        }
+
+        if (!implementsDomRange && !implementsTextRange) {
+            fail("Neither Range nor TextRange are implemented");
+        }
+
+        api.initialized = true;
+        api.features = {
+            implementsDomRange: implementsDomRange,
+            implementsTextRange: implementsTextRange
+        };
+
+        // Initialize modules and call init listeners
+        var allListeners = moduleInitializers.concat(initListeners);
+        for (var i = 0, len = allListeners.length; i < len; ++i) {
+            try {
+                allListeners[i](api);
+            } catch (ex) {
+                if (isHostObject(window, "console") && isHostMethod(window.console, "log")) {
+                    window.console.log("Init listener threw an exception. Continuing.", ex);
+                }
+
+            }
+        }
+    }
+
+    // Allow external scripts to initialize this library in case it's loaded after the document has loaded
+    api.init = init;
+
+    // Execute listener immediately if already initialized
+    api.addInitListener = function(listener) {
+        if (api.initialized) {
+            listener(api);
+        } else {
+            initListeners.push(listener);
+        }
+    };
+
+    var createMissingNativeApiListeners = [];
+
+    api.addCreateMissingNativeApiListener = function(listener) {
+        createMissingNativeApiListeners.push(listener);
+    };
+
+    function createMissingNativeApi(win) {
+        win = win || window;
+        init();
+
+        // Notify listeners
+        for (var i = 0, len = createMissingNativeApiListeners.length; i < len; ++i) {
+            createMissingNativeApiListeners[i](win);
+        }
+    }
+
+    api.createMissingNativeApi = createMissingNativeApi;
+
+    /**
+     * @constructor
+     */
+    function Module(name) {
+        this.name = name;
+        this.initialized = false;
+        this.supported = false;
+    }
+
+    Module.prototype.fail = function(reason) {
+        this.initialized = true;
+        this.supported = false;
+
+        throw new Error("Module '" + this.name + "' failed to load: " + reason);
+    };
+
+    Module.prototype.warn = function(msg) {
+        api.warn("Module " + this.name + ": " + msg);
+    };
+
+    Module.prototype.createError = function(msg) {
+        return new Error("Error in Rangy " + this.name + " module: " + msg);
+    };
+
+    api.createModule = function(name, initFunc) {
+        var module = new Module(name);
+        api.modules[name] = module;
+
+        moduleInitializers.push(function(api) {
+            initFunc(api, module);
+            module.initialized = true;
+            module.supported = true;
+        });
+    };
+
+    api.requireModules = function(modules) {
+        for (var i = 0, len = modules.length, module, moduleName; i < len; ++i) {
+            moduleName = modules[i];
+            module = api.modules[moduleName];
+            if (!module || !(module instanceof Module)) {
+                throw new Error("Module '" + moduleName + "' not found");
+            }
+            if (!module.supported) {
+                throw new Error("Module '" + moduleName + "' not supported");
+            }
+        }
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Wait for document to load before running tests
+
+    var docReady = false;
+
+    var loadHandler = function(e) {
+
+        if (!docReady) {
+            docReady = true;
+            if (!api.initialized) {
+                init();
+            }
+        }
+    };
+
+    // Test whether we have window and document objects that we will need
+    if (typeof window == UNDEFINED) {
+        fail("No window found");
+        return;
+    }
+    if (typeof document == UNDEFINED) {
+        fail("No document found");
+        return;
+    }
+
+    if (isHostMethod(document, "addEventListener")) {
+        document.addEventListener("DOMContentLoaded", loadHandler, false);
+    }
+
+    // Add a fallback in case the DOMContentLoaded event isn't supported
+    if (isHostMethod(window, "addEventListener")) {
+        window.addEventListener("load", loadHandler, false);
+    } else if (isHostMethod(window, "attachEvent")) {
+        window.attachEvent("onload", loadHandler);
+    } else {
+        fail("Window does not have required addEventListener or attachEvent method");
+    }
+
+    return api;
+})();
+rangy.createModule("DomUtil", function(api, module) {
+
+    var UNDEF = "undefined";
+    var util = api.util;
+
+    // Perform feature tests
+    if (!util.areHostMethods(document, ["createDocumentFragment", "createElement", "createTextNode"])) {
+        module.fail("document missing a Node creation method");
+    }
+
+    if (!util.isHostMethod(document, "getElementsByTagName")) {
+        module.fail("document missing getElementsByTagName method");
+    }
+
+    var el = document.createElement("div");
+    if (!util.areHostMethods(el, ["insertBefore", "appendChild", "cloneNode"] ||
+            !util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]))) {
+        module.fail("Incomplete Element implementation");
+    }
+
+    // innerHTML is required for Range's createContextualFragment method
+    if (!util.isHostProperty(el, "innerHTML")) {
+        module.fail("Element is missing innerHTML property");
+    }
+
+    var textNode = document.createTextNode("test");
+    if (!util.areHostMethods(textNode, ["splitText", "deleteData", "insertData", "appendData", "cloneNode"] ||
+            !util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]) ||
+            !util.areHostProperties(textNode, ["data"]))) {
+        module.fail("Incomplete Text Node implementation");
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Removed use of indexOf because of a bizarre bug in Opera that is thrown in one of the Acid3 tests. I haven't been
+    // able to replicate it outside of the test. The bug is that indexOf returns -1 when called on an Array that
+    // contains just the document as a single element and the value searched for is the document.
+    var arrayContains = /*Array.prototype.indexOf ?
+        function(arr, val) {
+            return arr.indexOf(val) > -1;
+        }:*/
+
+        function(arr, val) {
+            var i = arr.length;
+            while (i--) {
+                if (arr[i] === val) {
+                    return true;
+                }
+            }
+            return false;
+        };
+
+    // Opera 11 puts HTML elements in the null namespace, it seems, and IE 7 has undefined namespaceURI
+    function isHtmlNamespace(node) {
+        var ns;
+        return typeof node.namespaceURI == UNDEF || ((ns = node.namespaceURI) === null || ns == "http://www.w3.org/1999/xhtml");
+    }
+
+    function parentElement(node) {
+        var parent = node.parentNode;
+        return (parent.nodeType == 1) ? parent : null;
+    }
+
+    function getNodeIndex(node) {
+        var i = 0;
+        while( (node = node.previousSibling) ) {
+            i++;
+        }
+        return i;
+    }
+
+    function getNodeLength(node) {
+        var childNodes;
+        return isCharacterDataNode(node) ? node.length : ((childNodes = node.childNodes) ? childNodes.length : 0);
+    }
+
+    function getCommonAncestor(node1, node2) {
+        var ancestors = [], n;
+        for (n = node1; n; n = n.parentNode) {
+            ancestors.push(n);
+        }
+
+        for (n = node2; n; n = n.parentNode) {
+            if (arrayContains(ancestors, n)) {
+                return n;
+            }
+        }
+
+        return null;
+    }
+
+    function isAncestorOf(ancestor, descendant, selfIsAncestor) {
+        var n = selfIsAncestor ? descendant : descendant.parentNode;
+        while (n) {
+            if (n === ancestor) {
+                return true;
+            } else {
+                n = n.parentNode;
+            }
+        }
+        return false;
+    }
+
+    function getClosestAncestorIn(node, ancestor, selfIsAncestor) {
+        var p, n = selfIsAncestor ? node : node.parentNode;
+        while (n) {
+            p = n.parentNode;
+            if (p === ancestor) {
+                return n;
+            }
+            n = p;
+        }
+        return null;
+    }
+
+    function isCharacterDataNode(node) {
+        var t = node.nodeType;
+        return t == 3 || t == 4 || t == 8 ; // Text, CDataSection or Comment
+    }
+
+    function insertAfter(node, precedingNode) {
+        var nextNode = precedingNode.nextSibling, parent = precedingNode.parentNode;
+        if (nextNode) {
+            parent.insertBefore(node, nextNode);
+        } else {
+            parent.appendChild(node);
+        }
+        return node;
+    }
+
+    // Note that we cannot use splitText() because it is bugridden in IE 9.
+    function splitDataNode(node, index) {
+        var newNode = node.cloneNode(false);
+        newNode.deleteData(0, index);
+        node.deleteData(index, node.length - index);
+        insertAfter(newNode, node);
+        return newNode;
+    }
+
+    function getDocument(node) {
+        if (node.nodeType == 9) {
+            return node;
+        } else if (typeof node.ownerDocument != UNDEF) {
+            return node.ownerDocument;
+        } else if (typeof node.document != UNDEF) {
+            return node.document;
+        } else if (node.parentNode) {
+            return getDocument(node.parentNode);
+        } else {
+            throw new Error("getDocument: no document found for node");
+        }
+    }
+
+    function getWindow(node) {
+        var doc = getDocument(node);
+        if (typeof doc.defaultView != UNDEF) {
+            return doc.defaultView;
+        } else if (typeof doc.parentWindow != UNDEF) {
+            return doc.parentWindow;
+        } else {
+            throw new Error("Cannot get a window object for node");
+        }
+    }
+
+    function getIframeDocument(iframeEl) {
+        if (typeof iframeEl.contentDocument != UNDEF) {
+            return iframeEl.contentDocument;
+        } else if (typeof iframeEl.contentWindow != UNDEF) {
+            return iframeEl.contentWindow.document;
+        } else {
+            throw new Error("getIframeWindow: No Document object found for iframe element");
+        }
+    }
+
+    function getIframeWindow(iframeEl) {
+        if (typeof iframeEl.contentWindow != UNDEF) {
+            return iframeEl.contentWindow;
+        } else if (typeof iframeEl.contentDocument != UNDEF) {
+            return iframeEl.contentDocument.defaultView;
+        } else {
+            throw new Error("getIframeWindow: No Window object found for iframe element");
+        }
+    }
+
+    function getBody(doc) {
+        return util.isHostObject(doc, "body") ? doc.body : doc.getElementsByTagName("body")[0];
+    }
+
+    function getRootContainer(node) {
+        var parent;
+        while ( (parent = node.parentNode) ) {
+            node = parent;
+        }
+        return node;
+    }
+
+    function comparePoints(nodeA, offsetA, nodeB, offsetB) {
+        // See http://www.w3.org/TR/DOM-Level-2-Traversal-Range/ranges.html#Level-2-Range-Comparing
+        var nodeC, root, childA, childB, n;
+        if (nodeA == nodeB) {
+
+            // Case 1: nodes are the same
+            return offsetA === offsetB ? 0 : (offsetA < offsetB) ? -1 : 1;
+        } else if ( (nodeC = getClosestAncestorIn(nodeB, nodeA, true)) ) {
+
+            // Case 2: node C (container B or an ancestor) is a child node of A
+            return offsetA <= getNodeIndex(nodeC) ? -1 : 1;
+        } else if ( (nodeC = getClosestAncestorIn(nodeA, nodeB, true)) ) {
+
+            // Case 3: node C (container A or an ancestor) is a child node of B
+            return getNodeIndex(nodeC) < offsetB  ? -1 : 1;
+        } else {
+
+            // Case 4: containers are siblings or descendants of siblings
+            root = getCommonAncestor(nodeA, nodeB);
+            childA = (nodeA === root) ? root : getClosestAncestorIn(nodeA, root, true);
+            childB = (nodeB === root) ? root : getClosestAncestorIn(nodeB, root, true);
+
+            if (childA === childB) {
+                // This shouldn't be possible
+
+                throw new Error("comparePoints got to case 4 and childA and childB are the same!");
+            } else {
+                n = root.firstChild;
+                while (n) {
+                    if (n === childA) {
+                        return -1;
+                    } else if (n === childB) {
+                        return 1;
+                    }
+                    n = n.nextSibling;
+                }
+                throw new Error("Should not be here!");
+            }
+        }
+    }
+
+    function fragmentFromNodeChildren(node) {
+        var fragment = getDocument(node).createDocumentFragment(), child;
+        while ( (child = node.firstChild) ) {
+            fragment.appendChild(child);
+        }
+        return fragment;
+    }
+
+    function inspectNode(node) {
+        if (!node) {
+            return "[No node]";
+        }
+        if (isCharacterDataNode(node)) {
+            return '"' + node.data + '"';
+        } else if (node.nodeType == 1) {
+            var idAttr = node.id ? ' id="' + node.id + '"' : "";
+            return "<" + node.nodeName + idAttr + ">[" + node.childNodes.length + "]";
+        } else {
+            return node.nodeName;
+        }
+    }
+
+    /**
+     * @constructor
+     */
+    function NodeIterator(root) {
+        this.root = root;
+        this._next = root;
+    }
+
+    NodeIterator.prototype = {
+        _current: null,
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            var n = this._current = this._next;
+            var child, next;
+            if (this._current) {
+                child = n.firstChild;
+                if (child) {
+                    this._next = child;
+                } else {
+                    next = null;
+                    while ((n !== this.root) && !(next = n.nextSibling)) {
+                        n = n.parentNode;
+                    }
+                    this._next = next;
+                }
+            }
+            return this._current;
+        },
+
+        detach: function() {
+            this._current = this._next = this.root = null;
+        }
+    };
+
+    function createIterator(root) {
+        return new NodeIterator(root);
+    }
+
+    /**
+     * @constructor
+     */
+    function DomPosition(node, offset) {
+        this.node = node;
+        this.offset = offset;
+    }
+
+    DomPosition.prototype = {
+        equals: function(pos) {
+            return this.node === pos.node & this.offset == pos.offset;
+        },
+
+        inspect: function() {
+            return "[DomPosition(" + inspectNode(this.node) + ":" + this.offset + ")]";
+        }
+    };
+
+    /**
+     * @constructor
+     */
+    function DOMException(codeName) {
+        this.code = this[codeName];
+        this.codeName = codeName;
+        this.message = "DOMException: " + this.codeName;
+    }
+
+    DOMException.prototype = {
+        INDEX_SIZE_ERR: 1,
+        HIERARCHY_REQUEST_ERR: 3,
+        WRONG_DOCUMENT_ERR: 4,
+        NO_MODIFICATION_ALLOWED_ERR: 7,
+        NOT_FOUND_ERR: 8,
+        NOT_SUPPORTED_ERR: 9,
+        INVALID_STATE_ERR: 11
+    };
+
+    DOMException.prototype.toString = function() {
+        return this.message;
+    };
+
+    api.dom = {
+        arrayContains: arrayContains,
+        isHtmlNamespace: isHtmlNamespace,
+        parentElement: parentElement,
+        getNodeIndex: getNodeIndex,
+        getNodeLength: getNodeLength,
+        getCommonAncestor: getCommonAncestor,
+        isAncestorOf: isAncestorOf,
+        getClosestAncestorIn: getClosestAncestorIn,
+        isCharacterDataNode: isCharacterDataNode,
+        insertAfter: insertAfter,
+        splitDataNode: splitDataNode,
+        getDocument: getDocument,
+        getWindow: getWindow,
+        getIframeWindow: getIframeWindow,
+        getIframeDocument: getIframeDocument,
+        getBody: getBody,
+        getRootContainer: getRootContainer,
+        comparePoints: comparePoints,
+        inspectNode: inspectNode,
+        fragmentFromNodeChildren: fragmentFromNodeChildren,
+        createIterator: createIterator,
+        DomPosition: DomPosition
+    };
+
+    api.DOMException = DOMException;
+});rangy.createModule("DomRange", function(api, module) {
+    api.requireModules( ["DomUtil"] );
+
+
+    var dom = api.dom;
+    var DomPosition = dom.DomPosition;
+    var DOMException = api.DOMException;
+    
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Utility functions
+
+    function isNonTextPartiallySelected(node, range) {
+        return (node.nodeType != 3) &&
+               (dom.isAncestorOf(node, range.startContainer, true) || dom.isAncestorOf(node, range.endContainer, true));
+    }
+
+    function getRangeDocument(range) {
+        return dom.getDocument(range.startContainer);
+    }
+
+    function dispatchEvent(range, type, args) {
+        var listeners = range._listeners[type];
+        if (listeners) {
+            for (var i = 0, len = listeners.length; i < len; ++i) {
+                listeners[i].call(range, {target: range, args: args});
+            }
+        }
+    }
+
+    function getBoundaryBeforeNode(node) {
+        return new DomPosition(node.parentNode, dom.getNodeIndex(node));
+    }
+
+    function getBoundaryAfterNode(node) {
+        return new DomPosition(node.parentNode, dom.getNodeIndex(node) + 1);
+    }
+
+    function insertNodeAtPosition(node, n, o) {
+        var firstNodeInserted = node.nodeType == 11 ? node.firstChild : node;
+        if (dom.isCharacterDataNode(n)) {
+            if (o == n.length) {
+                dom.insertAfter(node, n);
+            } else {
+                n.parentNode.insertBefore(node, o == 0 ? n : dom.splitDataNode(n, o));
+            }
+        } else if (o >= n.childNodes.length) {
+            n.appendChild(node);
+        } else {
+            n.insertBefore(node, n.childNodes[o]);
+        }
+        return firstNodeInserted;
+    }
+
+    function cloneSubtree(iterator) {
+        var partiallySelected;
+        for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {
+            partiallySelected = iterator.isPartiallySelectedSubtree();
+
+            node = node.cloneNode(!partiallySelected);
+            if (partiallySelected) {
+                subIterator = iterator.getSubtreeIterator();
+                node.appendChild(cloneSubtree(subIterator));
+                subIterator.detach(true);
+            }
+
+            if (node.nodeType == 10) { // DocumentType
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+            frag.appendChild(node);
+        }
+        return frag;
+    }
+
+    function iterateSubtree(rangeIterator, func, iteratorState) {
+        var it, n;
+        iteratorState = iteratorState || { stop: false };
+        for (var node, subRangeIterator; node = rangeIterator.next(); ) {
+            //log.debug("iterateSubtree, partially selected: " + rangeIterator.isPartiallySelectedSubtree(), nodeToString(node));
+            if (rangeIterator.isPartiallySelectedSubtree()) {
+                // The node is partially selected by the Range, so we can use a new RangeIterator on the portion of the
+                // node selected by the Range.
+                if (func(node) === false) {
+                    iteratorState.stop = true;
+                    return;
+                } else {
+                    subRangeIterator = rangeIterator.getSubtreeIterator();
+                    iterateSubtree(subRangeIterator, func, iteratorState);
+                    subRangeIterator.detach(true);
+                    if (iteratorState.stop) {
+                        return;
+                    }
+                }
+            } else {
+                // The whole node is selected, so we can use efficient DOM iteration to iterate over the node and its
+                // descendant
+                it = dom.createIterator(node);
+                while ( (n = it.next()) ) {
+                    if (func(n) === false) {
+                        iteratorState.stop = true;
+                        return;
+                    }
+                }
+            }
+        }
+    }
+
+    function deleteSubtree(iterator) {
+        var subIterator;
+        while (iterator.next()) {
+            if (iterator.isPartiallySelectedSubtree()) {
+                subIterator = iterator.getSubtreeIterator();
+                deleteSubtree(subIterator);
+                subIterator.detach(true);
+            } else {
+                iterator.remove();
+            }
+        }
+    }
+
+    function extractSubtree(iterator) {
+
+        for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {
+
+
+            if (iterator.isPartiallySelectedSubtree()) {
+                node = node.cloneNode(false);
+                subIterator = iterator.getSubtreeIterator();
+                node.appendChild(extractSubtree(subIterator));
+                subIterator.detach(true);
+            } else {
+                iterator.remove();
+            }
+            if (node.nodeType == 10) { // DocumentType
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+            frag.appendChild(node);
+        }
+        return frag;
+    }
+
+    function getNodesInRange(range, nodeTypes, filter) {
+        //log.info("getNodesInRange, " + nodeTypes.join(","));
+        var filterNodeTypes = !!(nodeTypes && nodeTypes.length), regex;
+        var filterExists = !!filter;
+        if (filterNodeTypes) {
+            regex = new RegExp("^(" + nodeTypes.join("|") + ")$");
+        }
+
+        var nodes = [];
+        iterateSubtree(new RangeIterator(range, false), function(node) {
+            if ((!filterNodeTypes || regex.test(node.nodeType)) && (!filterExists || filter(node))) {
+                nodes.push(node);
+            }
+        });
+        return nodes;
+    }
+
+    function inspect(range) {
+        var name = (typeof range.getName == "undefined") ? "Range" : range.getName();
+        return "[" + name + "(" + dom.inspectNode(range.startContainer) + ":" + range.startOffset + ", " +
+                dom.inspectNode(range.endContainer) + ":" + range.endOffset + ")]";
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // RangeIterator code partially borrows from IERange by Tim Ryan (http://github.com/timcameronryan/IERange)
+
+    /**
+     * @constructor
+     */
+    function RangeIterator(range, clonePartiallySelectedTextNodes) {
+        this.range = range;
+        this.clonePartiallySelectedTextNodes = clonePartiallySelectedTextNodes;
+
+
+
+        if (!range.collapsed) {
+            this.sc = range.startContainer;
+            this.so = range.startOffset;
+            this.ec = range.endContainer;
+            this.eo = range.endOffset;
+            var root = range.commonAncestorContainer;
+
+            if (this.sc === this.ec && dom.isCharacterDataNode(this.sc)) {
+                this.isSingleCharacterDataNode = true;
+                this._first = this._last = this._next = this.sc;
+            } else {
+                this._first = this._next = (this.sc === root && !dom.isCharacterDataNode(this.sc)) ?
+                    this.sc.childNodes[this.so] : dom.getClosestAncestorIn(this.sc, root, true);
+                this._last = (this.ec === root && !dom.isCharacterDataNode(this.ec)) ?
+                    this.ec.childNodes[this.eo - 1] : dom.getClosestAncestorIn(this.ec, root, true);
+            }
+
+        }
+    }
+
+    RangeIterator.prototype = {
+        _current: null,
+        _next: null,
+        _first: null,
+        _last: null,
+        isSingleCharacterDataNode: false,
+
+        reset: function() {
+            this._current = null;
+            this._next = this._first;
+        },
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            // Move to next node
+            var current = this._current = this._next;
+            if (current) {
+                this._next = (current !== this._last) ? current.nextSibling : null;
+
+                // Check for partially selected text nodes
+                if (dom.isCharacterDataNode(current) && this.clonePartiallySelectedTextNodes) {
+                    if (current === this.ec) {
+
+                        (current = current.cloneNode(true)).deleteData(this.eo, current.length - this.eo);
+                    }
+                    if (this._current === this.sc) {
+
+                        (current = current.cloneNode(true)).deleteData(0, this.so);
+                    }
+                }
+            }
+
+            return current;
+        },
+
+        remove: function() {
+            var current = this._current, start, end;
+
+            if (dom.isCharacterDataNode(current) && (current === this.sc || current === this.ec)) {
+                start = (current === this.sc) ? this.so : 0;
+                end = (current === this.ec) ? this.eo : current.length;
+                if (start != end) {
+                    current.deleteData(start, end - start);
+                }
+            } else {
+                if (current.parentNode) {
+                    current.parentNode.removeChild(current);
+                } else {
+
+                }
+            }
+        },
+
+        // Checks if the current node is partially selected
+        isPartiallySelectedSubtree: function() {
+            var current = this._current;
+            return isNonTextPartiallySelected(current, this.range);
+        },
+
+        getSubtreeIterator: function() {
+            var subRange;
+            if (this.isSingleCharacterDataNode) {
+                subRange = this.range.cloneRange();
+                subRange.collapse();
+            } else {
+                subRange = new Range(getRangeDocument(this.range));
+                var current = this._current;
+                var startContainer = current, startOffset = 0, endContainer = current, endOffset = dom.getNodeLength(current);
+
+                if (dom.isAncestorOf(current, this.sc, true)) {
+                    startContainer = this.sc;
+                    startOffset = this.so;
+                }
+                if (dom.isAncestorOf(current, this.ec, true)) {
+                    endContainer = this.ec;
+                    endOffset = this.eo;
+                }
+
+                updateBoundaries(subRange, startContainer, startOffset, endContainer, endOffset);
+            }
+            return new RangeIterator(subRange, this.clonePartiallySelectedTextNodes);
+        },
+
+        detach: function(detachRange) {
+            if (detachRange) {
+                this.range.detach();
+            }
+            this.range = this._current = this._next = this._first = this._last = this.sc = this.so = this.ec = this.eo = null;
+        }
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Exceptions
+
+    /**
+     * @constructor
+     */
+    function RangeException(codeName) {
+        this.code = this[codeName];
+        this.codeName = codeName;
+        this.message = "RangeException: " + this.codeName;
+    }
+
+    RangeException.prototype = {
+        BAD_BOUNDARYPOINTS_ERR: 1,
+        INVALID_NODE_TYPE_ERR: 2
+    };
+
+    RangeException.prototype.toString = function() {
+        return this.message;
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    /**
+     * Currently iterates through all nodes in the range on creation until I think of a decent way to do it
+     * TODO: Look into making this a proper iterator, not requiring preloading everything first
+     * @constructor
+     */
+    function RangeNodeIterator(range, nodeTypes, filter) {
+        this.nodes = getNodesInRange(range, nodeTypes, filter);
+        this._next = this.nodes[0];
+        this._position = 0;
+    }
+
+    RangeNodeIterator.prototype = {
+        _current: null,
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            this._current = this._next;
+            this._next = this.nodes[ ++this._position ];
+            return this._current;
+        },
+
+        detach: function() {
+            this._current = this._next = this.nodes = null;
+        }
+    };
+
+    var beforeAfterNodeTypes = [1, 3, 4, 5, 7, 8, 10];
+    var rootContainerNodeTypes = [2, 9, 11];
+    var readonlyNodeTypes = [5, 6, 10, 12];
+    var insertableNodeTypes = [1, 3, 4, 5, 7, 8, 10, 11];
+    var surroundNodeTypes = [1, 3, 4, 5, 7, 8];
+
+    function createAncestorFinder(nodeTypes) {
+        return function(node, selfIsAncestor) {
+            var t, n = selfIsAncestor ? node : node.parentNode;
+            while (n) {
+                t = n.nodeType;
+                if (dom.arrayContains(nodeTypes, t)) {
+                    return n;
+                }
+                n = n.parentNode;
+            }
+            return null;
+        };
+    }
+
+    var getRootContainer = dom.getRootContainer;
+    var getDocumentOrFragmentContainer = createAncestorFinder( [9, 11] );
+    var getReadonlyAncestor = createAncestorFinder(readonlyNodeTypes);
+    var getDocTypeNotationEntityAncestor = createAncestorFinder( [6, 10, 12] );
+
+    function assertNoDocTypeNotationEntityAncestor(node, allowSelf) {
+        if (getDocTypeNotationEntityAncestor(node, allowSelf)) {
+            throw new RangeException("INVALID_NODE_TYPE_ERR");
+        }
+    }
+
+    function assertNotDetached(range) {
+        if (!range.startContainer) {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    }
+
+    function assertValidNodeType(node, invalidTypes) {
+        if (!dom.arrayContains(invalidTypes, node.nodeType)) {
+            throw new RangeException("INVALID_NODE_TYPE_ERR");
+        }
+    }
+
+    function assertValidOffset(node, offset) {
+        if (offset < 0 || offset > (dom.isCharacterDataNode(node) ? node.length : node.childNodes.length)) {
+            throw new DOMException("INDEX_SIZE_ERR");
+        }
+    }
+
+    function assertSameDocumentOrFragment(node1, node2) {
+        if (getDocumentOrFragmentContainer(node1, true) !== getDocumentOrFragmentContainer(node2, true)) {
+            throw new DOMException("WRONG_DOCUMENT_ERR");
+        }
+    }
+
+    function assertNodeNotReadOnly(node) {
+        if (getReadonlyAncestor(node, true)) {
+            throw new DOMException("NO_MODIFICATION_ALLOWED_ERR");
+        }
+    }
+
+    function assertNode(node, codeName) {
+        if (!node) {
+            throw new DOMException(codeName);
+        }
+    }
+
+    function isOrphan(node) {
+        return !dom.arrayContains(rootContainerNodeTypes, node.nodeType) && !getDocumentOrFragmentContainer(node, true);
+    }
+
+    function isValidOffset(node, offset) {
+        return offset <= (dom.isCharacterDataNode(node) ? node.length : node.childNodes.length);
+    }
+
+    function isRangeValid(range) {
+        return (!!range.startContainer && !!range.endContainer
+                && !isOrphan(range.startContainer)
+                && !isOrphan(range.endContainer)
+                && isValidOffset(range.startContainer, range.startOffset)
+                && isValidOffset(range.endContainer, range.endOffset));
+    }
+
+    function assertRangeValid(range) {
+        assertNotDetached(range);
+        if (!isRangeValid(range)) {
+            throw new Error("Range error: Range is no longer valid after DOM mutation (" + range.inspect() + ")");
+        }
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Test the browser's innerHTML support to decide how to implement createContextualFragment
+    var styleEl = document.createElement("style");
+    var htmlParsingConforms = false;
+    try {
+        styleEl.innerHTML = "<b>x</b>";
+        htmlParsingConforms = (styleEl.firstChild.nodeType == 3); // Opera incorrectly creates an element node
+    } catch (e) {
+        // IE 6 and 7 throw
+    }
+
+    api.features.htmlParsingConforms = htmlParsingConforms;
+
+    var createContextualFragment = htmlParsingConforms ?
+
+        // Implementation as per HTML parsing spec, trusting in the browser's implementation of innerHTML. See
+        // discussion and base code for this implementation at issue 67.
+        // Spec: http://html5.org/specs/dom-parsing.html#extensions-to-the-range-interface
+        // Thanks to Aleks Williams.
+        function(fragmentStr) {
+            // "Let node the context object's start's node."
+            var node = this.startContainer;
+            var doc = dom.getDocument(node);
+
+            // "If the context object's start's node is null, raise an INVALID_STATE_ERR
+            // exception and abort these steps."
+            if (!node) {
+                throw new DOMException("INVALID_STATE_ERR");
+            }
+
+            // "Let element be as follows, depending on node's interface:"
+            // Document, Document Fragment: null
+            var el = null;
+
+            // "Element: node"
+            if (node.nodeType == 1) {
+                el = node;
+
+            // "Text, Comment: node's parentElement"
+            } else if (dom.isCharacterDataNode(node)) {
+                el = dom.parentElement(node);
+            }
+
+            // "If either element is null or element's ownerDocument is an HTML document
+            // and element's local name is "html" and element's namespace is the HTML
+            // namespace"
+            if (el === null || (
+                el.nodeName == "HTML"
+                && dom.isHtmlNamespace(dom.getDocument(el).documentElement)
+                && dom.isHtmlNamespace(el)
+            )) {
+
+            // "let element be a new Element with "body" as its local name and the HTML
+            // namespace as its namespace.""
+                el = doc.createElement("body");
+            } else {
+                el = el.cloneNode(false);
+            }
+
+            // "If the node's document is an HTML document: Invoke the HTML fragment parsing algorithm."
+            // "If the node's document is an XML document: Invoke the XML fragment parsing algorithm."
+            // "In either case, the algorithm must be invoked with fragment as the input
+            // and element as the context element."
+            el.innerHTML = fragmentStr;
+
+            // "If this raises an exception, then abort these steps. Otherwise, let new
+            // children be the nodes returned."
+
+            // "Let fragment be a new DocumentFragment."
+            // "Append all new children to fragment."
+            // "Return fragment."
+            return dom.fragmentFromNodeChildren(el);
+        } :
+
+        // In this case, innerHTML cannot be trusted, so fall back to a simpler, non-conformant implementation that
+        // previous versions of Rangy used (with the exception of using a body element rather than a div)
+        function(fragmentStr) {
+            assertNotDetached(this);
+            var doc = getRangeDocument(this);
+            var el = doc.createElement("body");
+            el.innerHTML = fragmentStr;
+
+            return dom.fragmentFromNodeChildren(el);
+        };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    var rangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
+        "commonAncestorContainer"];
+
+    var s2s = 0, s2e = 1, e2e = 2, e2s = 3;
+    var n_b = 0, n_a = 1, n_b_a = 2, n_i = 3;
+
+    function RangePrototype() {}
+
+    RangePrototype.prototype = {
+        attachListener: function(type, listener) {
+            this._listeners[type].push(listener);
+        },
+
+        compareBoundaryPoints: function(how, range) {
+            assertRangeValid(this);
+            assertSameDocumentOrFragment(this.startContainer, range.startContainer);
+
+            var nodeA, offsetA, nodeB, offsetB;
+            var prefixA = (how == e2s || how == s2s) ? "start" : "end";
+            var prefixB = (how == s2e || how == s2s) ? "start" : "end";
+            nodeA = this[prefixA + "Container"];
+            offsetA = this[prefixA + "Offset"];
+            nodeB = range[prefixB + "Container"];
+            offsetB = range[prefixB + "Offset"];
+            return dom.comparePoints(nodeA, offsetA, nodeB, offsetB);
+        },
+
+        insertNode: function(node) {
+            assertRangeValid(this);
+            assertValidNodeType(node, insertableNodeTypes);
+            assertNodeNotReadOnly(this.startContainer);
+
+            if (dom.isAncestorOf(node, this.startContainer, true)) {
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+
+            // No check for whether the container of the start of the Range is of a type that does not allow
+            // children of the type of node: the browser's DOM implementation should do this for us when we attempt
+            // to add the node
+
+            var firstNodeInserted = insertNodeAtPosition(node, this.startContainer, this.startOffset);
+            this.setStartBefore(firstNodeInserted);
+        },
+
+        cloneContents: function() {
+            assertRangeValid(this);
+
+            var clone, frag;
+            if (this.collapsed) {
+                return getRangeDocument(this).createDocumentFragment();
+            } else {
+                if (this.startContainer === this.endContainer && dom.isCharacterDataNode(this.startContainer)) {
+                    clone = this.startContainer.cloneNode(true);
+                    clone.data = clone.data.slice(this.startOffset, this.endOffset);
+                    frag = getRangeDocument(this).createDocumentFragment();
+                    frag.appendChild(clone);
+                    return frag;
+                } else {
+                    var iterator = new RangeIterator(this, true);
+                    clone = cloneSubtree(iterator);
+                    iterator.detach();
+                }
+                return clone;
+            }
+        },
+
+        canSurroundContents: function() {
+            assertRangeValid(this);
+            assertNodeNotReadOnly(this.startContainer);
+            assertNodeNotReadOnly(this.endContainer);
+
+            // Check if the contents can be surrounded. Specifically, this means whether the range partially selects
+            // no non-text nodes.
+            var iterator = new RangeIterator(this, true);
+            var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
+                    (iterator._last && isNonTextPartiallySelected(iterator._last, this)));
+            iterator.detach();
+            return !boundariesInvalid;
+        },
+
+        surroundContents: function(node) {
+            assertValidNodeType(node, surroundNodeTypes);
+
+            if (!this.canSurroundContents()) {
+                throw new RangeException("BAD_BOUNDARYPOINTS_ERR");
+            }
+
+            // Extract the contents
+            var content = this.extractContents();
+
+            // Clear the children of the node
+            if (node.hasChildNodes()) {
+                while (node.lastChild) {
+                    node.removeChild(node.lastChild);
+                }
+            }
+
+            // Insert the new node and add the extracted contents
+            insertNodeAtPosition(node, this.startContainer, this.startOffset);
+            node.appendChild(content);
+
+            this.selectNode(node);
+        },
+
+        cloneRange: function() {
+            assertRangeValid(this);
+            var range = new Range(getRangeDocument(this));
+            var i = rangeProperties.length, prop;
+            while (i--) {
+                prop = rangeProperties[i];
+                range[prop] = this[prop];
+            }
+            return range;
+        },
+
+        toString: function() {
+            assertRangeValid(this);
+            var sc = this.startContainer;
+            if (sc === this.endContainer && dom.isCharacterDataNode(sc)) {
+                return (sc.nodeType == 3 || sc.nodeType == 4) ? sc.data.slice(this.startOffset, this.endOffset) : "";
+            } else {
+                var textBits = [], iterator = new RangeIterator(this, true);
+
+                iterateSubtree(iterator, function(node) {
+                    // Accept only text or CDATA nodes, not comments
+
+                    if (node.nodeType == 3 || node.nodeType == 4) {
+                        textBits.push(node.data);
+                    }
+                });
+                iterator.detach();
+                return textBits.join("");
+            }
+        },
+
+        // The methods below are all non-standard. The following batch were introduced by Mozilla but have since
+        // been removed from Mozilla.
+
+        compareNode: function(node) {
+            assertRangeValid(this);
+
+            var parent = node.parentNode;
+            var nodeIndex = dom.getNodeIndex(node);
+
+            if (!parent) {
+                throw new DOMException("NOT_FOUND_ERR");
+            }
+
+            var startComparison = this.comparePoint(parent, nodeIndex),
+                endComparison = this.comparePoint(parent, nodeIndex + 1);
+
+            if (startComparison < 0) { // Node starts before
+                return (endComparison > 0) ? n_b_a : n_b;
+            } else {
+                return (endComparison > 0) ? n_a : n_i;
+            }
+        },
+
+        comparePoint: function(node, offset) {
+            assertRangeValid(this);
+            assertNode(node, "HIERARCHY_REQUEST_ERR");
+            assertSameDocumentOrFragment(node, this.startContainer);
+
+            if (dom.comparePoints(node, offset, this.startContainer, this.startOffset) < 0) {
+                return -1;
+            } else if (dom.comparePoints(node, offset, this.endContainer, this.endOffset) > 0) {
+                return 1;
+            }
+            return 0;
+        },
+
+        createContextualFragment: createContextualFragment,
+
+        toHtml: function() {
+            assertRangeValid(this);
+            var container = getRangeDocument(this).createElement("div");
+            container.appendChild(this.cloneContents());
+            return container.innerHTML;
+        },
+
+        // touchingIsIntersecting determines whether this method considers a node that borders a range intersects
+        // with it (as in WebKit) or not (as in Gecko pre-1.9, and the default)
+        intersectsNode: function(node, touchingIsIntersecting) {
+            assertRangeValid(this);
+            assertNode(node, "NOT_FOUND_ERR");
+            if (dom.getDocument(node) !== getRangeDocument(this)) {
+                return false;
+            }
+
+            var parent = node.parentNode, offset = dom.getNodeIndex(node);
+            assertNode(parent, "NOT_FOUND_ERR");
+
+            var startComparison = dom.comparePoints(parent, offset, this.endContainer, this.endOffset),
+                endComparison = dom.comparePoints(parent, offset + 1, this.startContainer, this.startOffset);
+
+            return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
+        },
+
+
+        isPointInRange: function(node, offset) {
+            assertRangeValid(this);
+            assertNode(node, "HIERARCHY_REQUEST_ERR");
+            assertSameDocumentOrFragment(node, this.startContainer);
+
+            return (dom.comparePoints(node, offset, this.startContainer, this.startOffset) >= 0) &&
+                   (dom.comparePoints(node, offset, this.endContainer, this.endOffset) <= 0);
+        },
+
+        // The methods below are non-standard and invented by me.
+
+        // Sharing a boundary start-to-end or end-to-start does not count as intersection.
+        intersectsRange: function(range, touchingIsIntersecting) {
+            assertRangeValid(this);
+
+            if (getRangeDocument(range) != getRangeDocument(this)) {
+                throw new DOMException("WRONG_DOCUMENT_ERR");
+            }
+
+            var startComparison = dom.comparePoints(this.startContainer, this.startOffset, range.endContainer, range.endOffset),
+                endComparison = dom.comparePoints(this.endContainer, this.endOffset, range.startContainer, range.startOffset);
+
+            return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
+        },
+
+        intersection: function(range) {
+            if (this.intersectsRange(range)) {
+                var startComparison = dom.comparePoints(this.startContainer, this.startOffset, range.startContainer, range.startOffset),
+                    endComparison = dom.comparePoints(this.endContainer, this.endOffset, range.endContainer, range.endOffset);
+
+                var intersectionRange = this.cloneRange();
+
+                if (startComparison == -1) {
+                    intersectionRange.setStart(range.startContainer, range.startOffset);
+                }
+                if (endComparison == 1) {
+                    intersectionRange.setEnd(range.endContainer, range.endOffset);
+                }
+                return intersectionRange;
+            }
+            return null;
+        },
+
+        union: function(range) {
+            if (this.intersectsRange(range, true)) {
+                var unionRange = this.cloneRange();
+                if (dom.comparePoints(range.startContainer, range.startOffset, this.startContainer, this.startOffset) == -1) {
+                    unionRange.setStart(range.startContainer, range.startOffset);
+                }
+                if (dom.comparePoints(range.endContainer, range.endOffset, this.endContainer, this.endOffset) == 1) {
+                    unionRange.setEnd(range.endContainer, range.endOffset);
+                }
+                return unionRange;
+            } else {
+                throw new RangeException("Ranges do not intersect");
+            }
+        },
+
+        containsNode: function(node, allowPartial) {
+            if (allowPartial) {
+                return this.intersectsNode(node, false);
+            } else {
+                return this.compareNode(node) == n_i;
+            }
+        },
+
+        containsNodeContents: function(node) {
+            return this.comparePoint(node, 0) >= 0 && this.comparePoint(node, dom.getNodeLength(node)) <= 0;
+        },
+
+        containsRange: function(range) {
+            return this.intersection(range).equals(range);
+        },
+
+        containsNodeText: function(node) {
+            var nodeRange = this.cloneRange();
+            nodeRange.selectNode(node);
+            var textNodes = nodeRange.getNodes([3]);
+            if (textNodes.length > 0) {
+                nodeRange.setStart(textNodes[0], 0);
+                var lastTextNode = textNodes.pop();
+                nodeRange.setEnd(lastTextNode, lastTextNode.length);
+                var contains = this.containsRange(nodeRange);
+                nodeRange.detach();
+                return contains;
+            } else {
+                return this.containsNodeContents(node);
+            }
+        },
+
+        createNodeIterator: function(nodeTypes, filter) {
+            assertRangeValid(this);
+            return new RangeNodeIterator(this, nodeTypes, filter);
+        },
+
+        getNodes: function(nodeTypes, filter) {
+            assertRangeValid(this);
+            return getNodesInRange(this, nodeTypes, filter);
+        },
+
+        getDocument: function() {
+            return getRangeDocument(this);
+        },
+
+        collapseBefore: function(node) {
+            assertNotDetached(this);
+
+            this.setEndBefore(node);
+            this.collapse(false);
+        },
+
+        collapseAfter: function(node) {
+            assertNotDetached(this);
+
+            this.setStartAfter(node);
+            this.collapse(true);
+        },
+
+        getName: function() {
+            return "DomRange";
+        },
+
+        equals: function(range) {
+            return Range.rangesEqual(this, range);
+        },
+
+        isValid: function() {
+            return isRangeValid(this);
+        },
+
+        inspect: function() {
+            return inspect(this);
+        }
+    };
+
+    function copyComparisonConstantsToObject(obj) {
+        obj.START_TO_START = s2s;
+        obj.START_TO_END = s2e;
+        obj.END_TO_END = e2e;
+        obj.END_TO_START = e2s;
+
+        obj.NODE_BEFORE = n_b;
+        obj.NODE_AFTER = n_a;
+        obj.NODE_BEFORE_AND_AFTER = n_b_a;
+        obj.NODE_INSIDE = n_i;
+    }
+
+    function copyComparisonConstants(constructor) {
+        copyComparisonConstantsToObject(constructor);
+        copyComparisonConstantsToObject(constructor.prototype);
+    }
+
+    function createRangeContentRemover(remover, boundaryUpdater) {
+        return function() {
+            assertRangeValid(this);
+
+            var sc = this.startContainer, so = this.startOffset, root = this.commonAncestorContainer;
+
+            var iterator = new RangeIterator(this, true);
+
+            // Work out where to position the range after content removal
+            var node, boundary;
+            if (sc !== root) {
+                node = dom.getClosestAncestorIn(sc, root, true);
+                boundary = getBoundaryAfterNode(node);
+                sc = boundary.node;
+                so = boundary.offset;
+            }
+
+            // Check none of the range is read-only
+            iterateSubtree(iterator, assertNodeNotReadOnly);
+
+            iterator.reset();
+
+            // Remove the content
+            var returnValue = remover(iterator);
+            iterator.detach();
+
+            // Move to the new position
+            boundaryUpdater(this, sc, so, sc, so);
+
+            return returnValue;
+        };
+    }
+
+    function createPrototypeRange(constructor, boundaryUpdater, detacher) {
+        function createBeforeAfterNodeSetter(isBefore, isStart) {
+            return function(node) {
+                assertNotDetached(this);
+                assertValidNodeType(node, beforeAfterNodeTypes);
+                assertValidNodeType(getRootContainer(node), rootContainerNodeTypes);
+
+                var boundary = (isBefore ? getBoundaryBeforeNode : getBoundaryAfterNode)(node);
+                (isStart ? setRangeStart : setRangeEnd)(this, boundary.node, boundary.offset);
+            };
+        }
+
+        function setRangeStart(range, node, offset) {
+            var ec = range.endContainer, eo = range.endOffset;
+            if (node !== range.startContainer || offset !== range.startOffset) {
+                // Check the root containers of the range and the new boundary, and also check whether the new boundary
+                // is after the current end. In either case, collapse the range to the new position
+                if (getRootContainer(node) != getRootContainer(ec) || dom.comparePoints(node, offset, ec, eo) == 1) {
+                    ec = node;
+                    eo = offset;
+                }
+                boundaryUpdater(range, node, offset, ec, eo);
+            }
+        }
+
+        function setRangeEnd(range, node, offset) {
+            var sc = range.startContainer, so = range.startOffset;
+            if (node !== range.endContainer || offset !== range.endOffset) {
+                // Check the root containers of the range and the new boundary, and also check whether the new boundary
+                // is after the current end. In either case, collapse the range to the new position
+                if (getRootContainer(node) != getRootContainer(sc) || dom.comparePoints(node, offset, sc, so) == -1) {
+                    sc = node;
+                    so = offset;
+                }
+                boundaryUpdater(range, sc, so, node, offset);
+            }
+        }
+
+        function setRangeStartAndEnd(range, node, offset) {
+            if (node !== range.startContainer || offset !== range.startOffset || node !== range.endContainer || offset !== range.endOffset) {
+                boundaryUpdater(range, node, offset, node, offset);
+            }
+        }
+
+        constructor.prototype = new RangePrototype();
+
+        api.util.extend(constructor.prototype, {
+            setStart: function(node, offset) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeStart(this, node, offset);
+            },
+
+            setEnd: function(node, offset) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeEnd(this, node, offset);
+            },
+
+            setStartBefore: createBeforeAfterNodeSetter(true, true),
+            setStartAfter: createBeforeAfterNodeSetter(false, true),
+            setEndBefore: createBeforeAfterNodeSetter(true, false),
+            setEndAfter: createBeforeAfterNodeSetter(false, false),
+
+            collapse: function(isStart) {
+                assertRangeValid(this);
+                if (isStart) {
+                    boundaryUpdater(this, this.startContainer, this.startOffset, this.startContainer, this.startOffset);
+                } else {
+                    boundaryUpdater(this, this.endContainer, this.endOffset, this.endContainer, this.endOffset);
+                }
+            },
+
+            selectNodeContents: function(node) {
+                // This doesn't seem well specified: the spec talks only about selecting the node's contents, which
+                // could be taken to mean only its children. However, browsers implement this the same as selectNode for
+                // text nodes, so I shall do likewise
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+
+                boundaryUpdater(this, node, 0, node, dom.getNodeLength(node));
+            },
+
+            selectNode: function(node) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, false);
+                assertValidNodeType(node, beforeAfterNodeTypes);
+
+                var start = getBoundaryBeforeNode(node), end = getBoundaryAfterNode(node);
+                boundaryUpdater(this, start.node, start.offset, end.node, end.offset);
+            },
+
+            extractContents: createRangeContentRemover(extractSubtree, boundaryUpdater),
+
+            deleteContents: createRangeContentRemover(deleteSubtree, boundaryUpdater),
+
+            canSurroundContents: function() {
+                assertRangeValid(this);
+                assertNodeNotReadOnly(this.startContainer);
+                assertNodeNotReadOnly(this.endContainer);
+
+                // Check if the contents can be surrounded. Specifically, this means whether the range partially selects
+                // no non-text nodes.
+                var iterator = new RangeIterator(this, true);
+                var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
+                        (iterator._last && isNonTextPartiallySelected(iterator._last, this)));
+                iterator.detach();
+                return !boundariesInvalid;
+            },
+
+            detach: function() {
+                detacher(this);
+            },
+
+            splitBoundaries: function() {
+                assertRangeValid(this);
+
+
+                var sc = this.startContainer, so = this.startOffset, ec = this.endContainer, eo = this.endOffset;
+                var startEndSame = (sc === ec);
+
+                if (dom.isCharacterDataNode(ec) && eo > 0 && eo < ec.length) {
+                    dom.splitDataNode(ec, eo);
+
+                }
+
+                if (dom.isCharacterDataNode(sc) && so > 0 && so < sc.length) {
+
+                    sc = dom.splitDataNode(sc, so);
+                    if (startEndSame) {
+                        eo -= so;
+                        ec = sc;
+                    } else if (ec == sc.parentNode && eo >= dom.getNodeIndex(sc)) {
+                        eo++;
+                    }
+                    so = 0;
+
+                }
+                boundaryUpdater(this, sc, so, ec, eo);
+            },
+
+            normalizeBoundaries: function() {
+                assertRangeValid(this);
+
+                var sc = this.startContainer, so = this.startOffset, ec = this.endContainer, eo = this.endOffset;
+
+                var mergeForward = function(node) {
+                    var sibling = node.nextSibling;
+                    if (sibling && sibling.nodeType == node.nodeType) {
+                        ec = node;
+                        eo = node.length;
+                        node.appendData(sibling.data);
+                        sibling.parentNode.removeChild(sibling);
+                    }
+                };
+
+                var mergeBackward = function(node) {
+                    var sibling = node.previousSibling;
+                    if (sibling && sibling.nodeType == node.nodeType) {
+                        sc = node;
+                        var nodeLength = node.length;
+                        so = sibling.length;
+                        node.insertData(0, sibling.data);
+                        sibling.parentNode.removeChild(sibling);
+                        if (sc == ec) {
+                            eo += so;
+                            ec = sc;
+                        } else if (ec == node.parentNode) {
+                            var nodeIndex = dom.getNodeIndex(node);
+                            if (eo == nodeIndex) {
+                                ec = node;
+                                eo = nodeLength;
+                            } else if (eo > nodeIndex) {
+                                eo--;
+                            }
+                        }
+                    }
+                };
+
+                var normalizeStart = true;
+
+                if (dom.isCharacterDataNode(ec)) {
+                    if (ec.length == eo) {
+                        mergeForward(ec);
+                    }
+                } else {
+                    if (eo > 0) {
+                        var endNode = ec.childNodes[eo - 1];
+                        if (endNode && dom.isCharacterDataNode(endNode)) {
+                            mergeForward(endNode);
+                        }
+                    }
+                    normalizeStart = !this.collapsed;
+                }
+
+                if (normalizeStart) {
+                    if (dom.isCharacterDataNode(sc)) {
+                        if (so == 0) {
+                            mergeBackward(sc);
+                        }
+                    } else {
+                        if (so < sc.childNodes.length) {
+                            var startNode = sc.childNodes[so];
+                            if (startNode && dom.isCharacterDataNode(startNode)) {
+                                mergeBackward(startNode);
+                            }
+                        }
+                    }
+                } else {
+                    sc = ec;
+                    so = eo;
+                }
+
+                boundaryUpdater(this, sc, so, ec, eo);
+            },
+
+            collapseToPoint: function(node, offset) {
+                assertNotDetached(this);
+
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeStartAndEnd(this, node, offset);
+            }
+        });
+
+        copyComparisonConstants(constructor);
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Updates commonAncestorContainer and collapsed after boundary change
+    function updateCollapsedAndCommonAncestor(range) {
+        range.collapsed = (range.startContainer === range.endContainer && range.startOffset === range.endOffset);
+        range.commonAncestorContainer = range.collapsed ?
+            range.startContainer : dom.getCommonAncestor(range.startContainer, range.endContainer);
+    }
+
+    function updateBoundaries(range, startContainer, startOffset, endContainer, endOffset) {
+        var startMoved = (range.startContainer !== startContainer || range.startOffset !== startOffset);
+        var endMoved = (range.endContainer !== endContainer || range.endOffset !== endOffset);
+
+        range.startContainer = startContainer;
+        range.startOffset = startOffset;
+        range.endContainer = endContainer;
+        range.endOffset = endOffset;
+
+        updateCollapsedAndCommonAncestor(range);
+        dispatchEvent(range, "boundarychange", {startMoved: startMoved, endMoved: endMoved});
+    }
+
+    function detach(range) {
+        assertNotDetached(range);
+        range.startContainer = range.startOffset = range.endContainer = range.endOffset = null;
+        range.collapsed = range.commonAncestorContainer = null;
+        dispatchEvent(range, "detach", null);
+        range._listeners = null;
+    }
+
+    /**
+     * @constructor
+     */
+    function Range(doc) {
+        this.startContainer = doc;
+        this.startOffset = 0;
+        this.endContainer = doc;
+        this.endOffset = 0;
+        this._listeners = {
+            boundarychange: [],
+            detach: []
+        };
+        updateCollapsedAndCommonAncestor(this);
+    }
+
+    createPrototypeRange(Range, updateBoundaries, detach);
+
+    api.rangePrototype = RangePrototype.prototype;
+
+    Range.rangeProperties = rangeProperties;
+    Range.RangeIterator = RangeIterator;
+    Range.copyComparisonConstants = copyComparisonConstants;
+    Range.createPrototypeRange = createPrototypeRange;
+    Range.inspect = inspect;
+    Range.getRangeDocument = getRangeDocument;
+    Range.rangesEqual = function(r1, r2) {
+        return r1.startContainer === r2.startContainer &&
+               r1.startOffset === r2.startOffset &&
+               r1.endContainer === r2.endContainer &&
+               r1.endOffset === r2.endOffset;
+    };
+
+    api.DomRange = Range;
+    api.RangeException = RangeException;
+});rangy.createModule("WrappedRange", function(api, module) {
+    api.requireModules( ["DomUtil", "DomRange"] );
+
+    /**
+     * @constructor
+     */
+    var WrappedRange;
+    var dom = api.dom;
+    var DomPosition = dom.DomPosition;
+    var DomRange = api.DomRange;
+
+
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    /*
+    This is a workaround for a bug where IE returns the wrong container element from the TextRange's parentElement()
+    method. For example, in the following (where pipes denote the selection boundaries):
+
+    <ul id="ul"><li id="a">| a </li><li id="b"> b |</li></ul>
+
+    var range = document.selection.createRange();
+    alert(range.parentElement().id); // Should alert "ul" but alerts "b"
+
+    This method returns the common ancestor node of the following:
+    - the parentElement() of the textRange
+    - the parentElement() of the textRange after calling collapse(true)
+    - the parentElement() of the textRange after calling collapse(false)
+     */
+    function getTextRangeContainerElement(textRange) {
+        var parentEl = textRange.parentElement();
+
+        var range = textRange.duplicate();
+        range.collapse(true);
+        var startEl = range.parentElement();
+        range = textRange.duplicate();
+        range.collapse(false);
+        var endEl = range.parentElement();
+        var startEndContainer = (startEl == endEl) ? startEl : dom.getCommonAncestor(startEl, endEl);
+
+        return startEndContainer == parentEl ? startEndContainer : dom.getCommonAncestor(parentEl, startEndContainer);
+    }
+
+    function textRangeIsCollapsed(textRange) {
+        return textRange.compareEndPoints("StartToEnd", textRange) == 0;
+    }
+
+    // Gets the boundary of a TextRange expressed as a node and an offset within that node. This function started out as
+    // an improved version of code found in Tim Cameron Ryan's IERange (http://code.google.com/p/ierange/) but has
+    // grown, fixing problems with line breaks in preformatted text, adding workaround for IE TextRange bugs, handling
+    // for inputs and images, plus optimizations.
+    function getTextRangeBoundaryPosition(textRange, wholeRangeContainerElement, isStart, isCollapsed) {
+        var workingRange = textRange.duplicate();
+
+        workingRange.collapse(isStart);
+        var containerElement = workingRange.parentElement();
+
+        // Sometimes collapsing a TextRange that's at the start of a text node can move it into the previous node, so
+        // check for that
+        // TODO: Find out when. Workaround for wholeRangeContainerElement may break this
+        if (!dom.isAncestorOf(wholeRangeContainerElement, containerElement, true)) {
+            containerElement = wholeRangeContainerElement;
+
+        }
+
+
+
+        // Deal with nodes that cannot "contain rich HTML markup". In practice, this means form inputs, images and
+        // similar. See http://msdn.microsoft.com/en-us/library/aa703950%28VS.85%29.aspx
+        if (!containerElement.canHaveHTML) {
+            return new DomPosition(containerElement.parentNode, dom.getNodeIndex(containerElement));
+        }
+
+        var workingNode = dom.getDocument(containerElement).createElement("span");
+        var comparison, workingComparisonType = isStart ? "StartToStart" : "StartToEnd";
+        var previousNode, nextNode, boundaryPosition, boundaryNode;
+
+        // Move the working range through the container's children, starting at the end and working backwards, until the
+        // working range reaches or goes past the boundary we're interested in
+        do {
+            containerElement.insertBefore(workingNode, workingNode.previousSibling);
+            workingRange.moveToElementText(workingNode);
+        } while ( (comparison = workingRange.compareEndPoints(workingComparisonType, textRange)) > 0 &&
+                workingNode.previousSibling);
+
+        // We've now reached or gone past the boundary of the text range we're interested in
+        // so have identified the node we want
+        boundaryNode = workingNode.nextSibling;
+
+        if (comparison == -1 && boundaryNode && dom.isCharacterDataNode(boundaryNode)) {
+            // This is a character data node (text, comment, cdata). The working range is collapsed at the start of the
+            // node containing the text range's boundary, so we move the end of the working range to the boundary point
+            // and measure the length of its text to get the boundary's offset within the node.
+            workingRange.setEndPoint(isStart ? "EndToStart" : "EndToEnd", textRange);
+
+
+            var offset;
+
+            if (/[\r\n]/.test(boundaryNode.data)) {
+                /*
+                For the particular case of a boundary within a text node containing line breaks (within a <pre> element,
+                for example), we need a slightly complicated approach to get the boundary's offset in IE. The facts:
+
+                - Each line break is represented as \r in the text node's data/nodeValue properties
+                - Each line break is represented as \r\n in the TextRange's 'text' property
+                - The 'text' property of the TextRange does not contain trailing line breaks
+
+                To get round the problem presented by the final fact above, we can use the fact that TextRange's
+                moveStart() and moveEnd() methods return the actual number of characters moved, which is not necessarily
+                the same as the number of characters it was instructed to move. The simplest approach is to use this to
+                store the characters moved when moving both the start and end of the range to the start of the document
+                body and subtracting the start offset from the end offset (the "move-negative-gazillion" method).
+                However, this is extremely slow when the document is large and the range is near the end of it. Clearly
+                doing the mirror image (i.e. moving the range boundaries to the end of the document) has the same
+                problem.
+
+                Another approach that works is to use moveStart() to move the start boundary of the range up to the end
+                boundary one character at a time and incrementing a counter with the value returned by the moveStart()
+                call. However, the check for whether the start boundary has reached the end boundary is expensive, so
+                this method is slow (although unlike "move-negative-gazillion" is largely unaffected by the location of
+                the range within the document).
+
+                The method below is a hybrid of the two methods above. It uses the fact that a string containing the
+                TextRange's 'text' property with each \r\n converted to a single \r character cannot be longer than the
+                text of the TextRange, so the start of the range is moved that length initially and then a character at
+                a time to make up for any trailing line breaks not contained in the 'text' property. This has good
+                performance in most situations compared to the previous two methods.
+                */
+                var tempRange = workingRange.duplicate();
+                var rangeLength = tempRange.text.replace(/\r\n/g, "\r").length;
+
+                offset = tempRange.moveStart("character", rangeLength);
+                while ( (comparison = tempRange.compareEndPoints("StartToEnd", tempRange)) == -1) {
+                    offset++;
+                    tempRange.moveStart("character", 1);
+                }
+            } else {
+                offset = workingRange.text.length;
+            }
+            boundaryPosition = new DomPosition(boundaryNode, offset);
+        } else {
+
+
+            // If the boundary immediately follows a character data node and this is the end boundary, we should favour
+            // a position within that, and likewise for a start boundary preceding a character data node
+            previousNode = (isCollapsed || !isStart) && workingNode.previousSibling;
+            nextNode = (isCollapsed || isStart) && workingNode.nextSibling;
+
+
+
+            if (nextNode && dom.isCharacterDataNode(nextNode)) {
+                boundaryPosition = new DomPosition(nextNode, 0);
+            } else if (previousNode && dom.isCharacterDataNode(previousNode)) {
+                boundaryPosition = new DomPosition(previousNode, previousNode.length);
+            } else {
+                boundaryPosition = new DomPosition(containerElement, dom.getNodeIndex(workingNode));
+            }
+        }
+
+        // Clean up
+        workingNode.parentNode.removeChild(workingNode);
+
+        return boundaryPosition;
+    }
+
+    // Returns a TextRange representing the boundary of a TextRange expressed as a node and an offset within that node.
+    // This function started out as an optimized version of code found in Tim Cameron Ryan's IERange
+    // (http://code.google.com/p/ierange/)
+    function createBoundaryTextRange(boundaryPosition, isStart) {
+        var boundaryNode, boundaryParent, boundaryOffset = boundaryPosition.offset;
+        var doc = dom.getDocument(boundaryPosition.node);
+        var workingNode, childNodes, workingRange = doc.body.createTextRange();
+        var nodeIsDataNode = dom.isCharacterDataNode(boundaryPosition.node);
+
+        if (nodeIsDataNode) {
+            boundaryNode = boundaryPosition.node;
+            boundaryParent = boundaryNode.parentNode;
+        } else {
+            childNodes = boundaryPosition.node.childNodes;
+            boundaryNode = (boundaryOffset < childNodes.length) ? childNodes[boundaryOffset] : null;
+            boundaryParent = boundaryPosition.node;
+        }
+
+        // Position the range immediately before the node containing the boundary
+        workingNode = doc.createElement("span");
+
+        // Making the working element non-empty element persuades IE to consider the TextRange boundary to be within the
+        // element rather than immediately before or after it, which is what we want
+        workingNode.innerHTML = "&#feff;";
+
+        // insertBefore is supposed to work like appendChild if the second parameter is null. However, a bug report
+        // for IERange suggests that it can crash the browser: http://code.google.com/p/ierange/issues/detail?id=12
+        if (boundaryNode) {
+            boundaryParent.insertBefore(workingNode, boundaryNode);
+        } else {
+            boundaryParent.appendChild(workingNode);
+        }
+
+        workingRange.moveToElementText(workingNode);
+        workingRange.collapse(!isStart);
+
+        // Clean up
+        boundaryParent.removeChild(workingNode);
+
+        // Move the working range to the text offset, if required
+        if (nodeIsDataNode) {
+            workingRange[isStart ? "moveStart" : "moveEnd"]("character", boundaryOffset);
+        }
+
+        return workingRange;
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    if (api.features.implementsDomRange && (!api.features.implementsTextRange || !api.config.preferTextRange)) {
+        // This is a wrapper around the browser's native DOM Range. It has two aims:
+        // - Provide workarounds for specific browser bugs
+        // - provide convenient extensions, which are inherited from Rangy's DomRange
+
+        (function() {
+            var rangeProto;
+            var rangeProperties = DomRange.rangeProperties;
+            var canSetRangeStartAfterEnd;
+
+            function updateRangeProperties(range) {
+                var i = rangeProperties.length, prop;
+                while (i--) {
+                    prop = rangeProperties[i];
+                    range[prop] = range.nativeRange[prop];
+                }
+            }
+
+            function updateNativeRange(range, startContainer, startOffset, endContainer,endOffset) {
+                var startMoved = (range.startContainer !== startContainer || range.startOffset != startOffset);
+                var endMoved = (range.endContainer !== endContainer || range.endOffset != endOffset);
+
+                // Always set both boundaries for the benefit of IE9 (see issue 35)
+                if (startMoved || endMoved) {
+                    range.setEnd(endContainer, endOffset);
+                    range.setStart(startContainer, startOffset);
+                }
+            }
+
+            function detach(range) {
+                range.nativeRange.detach();
+                range.detached = true;
+                var i = rangeProperties.length, prop;
+                while (i--) {
+                    prop = rangeProperties[i];
+                    range[prop] = null;
+                }
+            }
+
+            var createBeforeAfterNodeSetter;
+
+            WrappedRange = function(range) {
+                if (!range) {
+                    throw new Error("Range must be specified");
+                }
+                this.nativeRange = range;
+                updateRangeProperties(this);
+            };
+
+            DomRange.createPrototypeRange(WrappedRange, updateNativeRange, detach);
+
+            rangeProto = WrappedRange.prototype;
+
+            rangeProto.selectNode = function(node) {
+                this.nativeRange.selectNode(node);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.deleteContents = function() {
+                this.nativeRange.deleteContents();
+                updateRangeProperties(this);
+            };
+
+            rangeProto.extractContents = function() {
+                var frag = this.nativeRange.extractContents();
+                updateRangeProperties(this);
+                return frag;
+            };
+
+            rangeProto.cloneContents = function() {
+                return this.nativeRange.cloneContents();
+            };
+
+            // TODO: Until I can find a way to programmatically trigger the Firefox bug (apparently long-standing, still
+            // present in 3.6.8) that throws "Index or size is negative or greater than the allowed amount" for
+            // insertNode in some circumstances, all browsers will have to use the Rangy's own implementation of
+            // insertNode, which works but is almost certainly slower than the native implementation.
+/*
+            rangeProto.insertNode = function(node) {
+                this.nativeRange.insertNode(node);
+                updateRangeProperties(this);
+            };
+*/
+
+            rangeProto.surroundContents = function(node) {
+                this.nativeRange.surroundContents(node);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.collapse = function(isStart) {
+                this.nativeRange.collapse(isStart);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.cloneRange = function() {
+                return new WrappedRange(this.nativeRange.cloneRange());
+            };
+
+            rangeProto.refresh = function() {
+                updateRangeProperties(this);
+            };
+
+            rangeProto.toString = function() {
+                return this.nativeRange.toString();
+            };
+
+            // Create test range and node for feature detection
+
+            var testTextNode = document.createTextNode("test");
+            dom.getBody(document).appendChild(testTextNode);
+            var range = document.createRange();
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for Firefox 2 bug that prevents moving the start of a Range to a point after its current end and
+            // correct for it
+
+            range.setStart(testTextNode, 0);
+            range.setEnd(testTextNode, 0);
+
+            try {
+                range.setStart(testTextNode, 1);
+                canSetRangeStartAfterEnd = true;
+
+                rangeProto.setStart = function(node, offset) {
+                    this.nativeRange.setStart(node, offset);
+                    updateRangeProperties(this);
+                };
+
+                rangeProto.setEnd = function(node, offset) {
+                    this.nativeRange.setEnd(node, offset);
+                    updateRangeProperties(this);
+                };
+
+                createBeforeAfterNodeSetter = function(name) {
+                    return function(node) {
+                        this.nativeRange[name](node);
+                        updateRangeProperties(this);
+                    };
+                };
+
+            } catch(ex) {
+
+
+                canSetRangeStartAfterEnd = false;
+
+                rangeProto.setStart = function(node, offset) {
+                    try {
+                        this.nativeRange.setStart(node, offset);
+                    } catch (ex) {
+                        this.nativeRange.setEnd(node, offset);
+                        this.nativeRange.setStart(node, offset);
+                    }
+                    updateRangeProperties(this);
+                };
+
+                rangeProto.setEnd = function(node, offset) {
+                    try {
+                        this.nativeRange.setEnd(node, offset);
+                    } catch (ex) {
+                        this.nativeRange.setStart(node, offset);
+                        this.nativeRange.setEnd(node, offset);
+                    }
+                    updateRangeProperties(this);
+                };
+
+                createBeforeAfterNodeSetter = function(name, oppositeName) {
+                    return function(node) {
+                        try {
+                            this.nativeRange[name](node);
+                        } catch (ex) {
+                            this.nativeRange[oppositeName](node);
+                            this.nativeRange[name](node);
+                        }
+                        updateRangeProperties(this);
+                    };
+                };
+            }
+
+            rangeProto.setStartBefore = createBeforeAfterNodeSetter("setStartBefore", "setEndBefore");
+            rangeProto.setStartAfter = createBeforeAfterNodeSetter("setStartAfter", "setEndAfter");
+            rangeProto.setEndBefore = createBeforeAfterNodeSetter("setEndBefore", "setStartBefore");
+            rangeProto.setEndAfter = createBeforeAfterNodeSetter("setEndAfter", "setStartAfter");
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for and correct Firefox 2 behaviour with selectNodeContents on text nodes: it collapses the range to
+            // the 0th character of the text node
+            range.selectNodeContents(testTextNode);
+            if (range.startContainer == testTextNode && range.endContainer == testTextNode &&
+                    range.startOffset == 0 && range.endOffset == testTextNode.length) {
+                rangeProto.selectNodeContents = function(node) {
+                    this.nativeRange.selectNodeContents(node);
+                    updateRangeProperties(this);
+                };
+            } else {
+                rangeProto.selectNodeContents = function(node) {
+                    this.setStart(node, 0);
+                    this.setEnd(node, DomRange.getEndOffset(node));
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for WebKit bug that has the beahviour of compareBoundaryPoints round the wrong way for constants
+            // START_TO_END and END_TO_START: https://bugs.webkit.org/show_bug.cgi?id=20738
+
+            range.selectNodeContents(testTextNode);
+            range.setEnd(testTextNode, 3);
+
+            var range2 = document.createRange();
+            range2.selectNodeContents(testTextNode);
+            range2.setEnd(testTextNode, 4);
+            range2.setStart(testTextNode, 2);
+
+            if (range.compareBoundaryPoints(range.START_TO_END, range2) == -1 &
+                    range.compareBoundaryPoints(range.END_TO_START, range2) == 1) {
+                // This is the wrong way round, so correct for it
+
+
+                rangeProto.compareBoundaryPoints = function(type, range) {
+                    range = range.nativeRange || range;
+                    if (type == range.START_TO_END) {
+                        type = range.END_TO_START;
+                    } else if (type == range.END_TO_START) {
+                        type = range.START_TO_END;
+                    }
+                    return this.nativeRange.compareBoundaryPoints(type, range);
+                };
+            } else {
+                rangeProto.compareBoundaryPoints = function(type, range) {
+                    return this.nativeRange.compareBoundaryPoints(type, range.nativeRange || range);
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for existence of createContextualFragment and delegate to it if it exists
+            if (api.util.isHostMethod(range, "createContextualFragment")) {
+                rangeProto.createContextualFragment = function(fragmentStr) {
+                    return this.nativeRange.createContextualFragment(fragmentStr);
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Clean up
+            dom.getBody(document).removeChild(testTextNode);
+            range.detach();
+            range2.detach();
+        })();
+
+        api.createNativeRange = function(doc) {
+            doc = doc || document;
+            return doc.createRange();
+        };
+    } else if (api.features.implementsTextRange) {
+        // This is a wrapper around a TextRange, providing full DOM Range functionality using rangy's DomRange as a
+        // prototype
+
+        WrappedRange = function(textRange) {
+            this.textRange = textRange;
+            this.refresh();
+        };
+
+        WrappedRange.prototype = new DomRange(document);
+
+        WrappedRange.prototype.refresh = function() {
+            var start, end;
+
+            // TextRange's parentElement() method cannot be trusted. getTextRangeContainerElement() works around that.
+            var rangeContainerElement = getTextRangeContainerElement(this.textRange);
+
+            if (textRangeIsCollapsed(this.textRange)) {
+                end = start = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, true);
+            } else {
+
+                start = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, false);
+                end = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, false, false);
+            }
+
+            this.setStart(start.node, start.offset);
+            this.setEnd(end.node, end.offset);
+        };
+
+        DomRange.copyComparisonConstants(WrappedRange);
+
+        // Add WrappedRange as the Range property of the global object to allow expression like Range.END_TO_END to work
+        var globalObj = (function() { return this; })();
+        if (typeof globalObj.Range == "undefined") {
+            globalObj.Range = WrappedRange;
+        }
+
+        api.createNativeRange = function(doc) {
+            doc = doc || document;
+            return doc.body.createTextRange();
+        };
+    }
+
+    if (api.features.implementsTextRange) {
+        WrappedRange.rangeToTextRange = function(range) {
+            if (range.collapsed) {
+                var tr = createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+
+
+
+                return tr;
+
+                //return createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+            } else {
+                var startRange = createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+                var endRange = createBoundaryTextRange(new DomPosition(range.endContainer, range.endOffset), false);
+                var textRange = dom.getDocument(range.startContainer).body.createTextRange();
+                textRange.setEndPoint("StartToStart", startRange);
+                textRange.setEndPoint("EndToEnd", endRange);
+                return textRange;
+            }
+        };
+    }
+
+    WrappedRange.prototype.getName = function() {
+        return "WrappedRange";
+    };
+
+    api.WrappedRange = WrappedRange;
+
+    api.createRange = function(doc) {
+        doc = doc || document;
+        return new WrappedRange(api.createNativeRange(doc));
+    };
+
+    api.createRangyRange = function(doc) {
+        doc = doc || document;
+        return new DomRange(doc);
+    };
+
+    api.createIframeRange = function(iframeEl) {
+        return api.createRange(dom.getIframeDocument(iframeEl));
+    };
+
+    api.createIframeRangyRange = function(iframeEl) {
+        return api.createRangyRange(dom.getIframeDocument(iframeEl));
+    };
+
+    api.addCreateMissingNativeApiListener(function(win) {
+        var doc = win.document;
+        if (typeof doc.createRange == "undefined") {
+            doc.createRange = function() {
+                return api.createRange(this);
+            };
+        }
+        doc = win = null;
+    });
+});rangy.createModule("WrappedSelection", function(api, module) {
+    // This will create a selection object wrapper that follows the Selection object found in the WHATWG draft DOM Range
+    // spec (http://html5.org/specs/dom-range.html)
+
+    api.requireModules( ["DomUtil", "DomRange", "WrappedRange"] );
+
+    api.config.checkSelectionRanges = true;
+
+    var BOOLEAN = "boolean",
+        windowPropertyName = "_rangySelection",
+        dom = api.dom,
+        util = api.util,
+        DomRange = api.DomRange,
+        WrappedRange = api.WrappedRange,
+        DOMException = api.DOMException,
+        DomPosition = dom.DomPosition,
+        getSelection,
+        selectionIsCollapsed,
+        CONTROL = "Control";
+
+
+
+    function getWinSelection(winParam) {
+        return (winParam || window).getSelection();
+    }
+
+    function getDocSelection(winParam) {
+        return (winParam || window).document.selection;
+    }
+
+    // Test for the Range/TextRange and Selection features required
+    // Test for ability to retrieve selection
+    var implementsWinGetSelection = api.util.isHostMethod(window, "getSelection"),
+        implementsDocSelection = api.util.isHostObject(document, "selection");
+
+    var useDocumentSelection = implementsDocSelection && (!implementsWinGetSelection || api.config.preferTextRange);
+
+    if (useDocumentSelection) {
+        getSelection = getDocSelection;
+        api.isSelectionValid = function(winParam) {
+            var doc = (winParam || window).document, nativeSel = doc.selection;
+
+            // Check whether the selection TextRange is actually contained within the correct document
+            return (nativeSel.type != "None" || dom.getDocument(nativeSel.createRange().parentElement()) == doc);
+        };
+    } else if (implementsWinGetSelection) {
+        getSelection = getWinSelection;
+        api.isSelectionValid = function() {
+            return true;
+        };
+    } else {
+        module.fail("Neither document.selection or window.getSelection() detected.");
+    }
+
+    api.getNativeSelection = getSelection;
+
+    var testSelection = getSelection();
+    var testRange = api.createNativeRange(document);
+    var body = dom.getBody(document);
+
+    // Obtaining a range from a selection
+    var selectionHasAnchorAndFocus = util.areHostObjects(testSelection, ["anchorNode", "focusNode"] &&
+                                     util.areHostProperties(testSelection, ["anchorOffset", "focusOffset"]));
+    api.features.selectionHasAnchorAndFocus = selectionHasAnchorAndFocus;
+
+    // Test for existence of native selection extend() method
+    var selectionHasExtend = util.isHostMethod(testSelection, "extend");
+    api.features.selectionHasExtend = selectionHasExtend;
+
+    // Test if rangeCount exists
+    var selectionHasRangeCount = (typeof testSelection.rangeCount == "number");
+    api.features.selectionHasRangeCount = selectionHasRangeCount;
+
+    var selectionSupportsMultipleRanges = false;
+    var collapsedNonEditableSelectionsSupported = true;
+
+    if (util.areHostMethods(testSelection, ["addRange", "getRangeAt", "removeAllRanges"]) &&
+            typeof testSelection.rangeCount == "number" && api.features.implementsDomRange) {
+
+        (function() {
+            var iframe = document.createElement("iframe");
+            iframe.frameBorder = 0;
+            iframe.style.position = "absolute";
+            iframe.style.left = "-10000px";
+            body.appendChild(iframe);
+
+            var iframeDoc = dom.getIframeDocument(iframe);
+            iframeDoc.open();
+            iframeDoc.write("<html><head></head><body>12</body></html>");
+            iframeDoc.close();
+
+            var sel = dom.getIframeWindow(iframe).getSelection();
+            var docEl = iframeDoc.documentElement;
+            var iframeBody = docEl.lastChild, textNode = iframeBody.firstChild;
+
+            // Test whether the native selection will allow a collapsed selection within a non-editable element
+            var r1 = iframeDoc.createRange();
+            r1.setStart(textNode, 1);
+            r1.collapse(true);
+            sel.addRange(r1);
+            collapsedNonEditableSelectionsSupported = (sel.rangeCount == 1);
+            sel.removeAllRanges();
+
+            // Test whether the native selection is capable of supporting multiple ranges
+            var r2 = r1.cloneRange();
+            r1.setStart(textNode, 0);
+            r2.setEnd(textNode, 2);
+            sel.addRange(r1);
+            sel.addRange(r2);
+
+            selectionSupportsMultipleRanges = (sel.rangeCount == 2);
+
+            // Clean up
+            r1.detach();
+            r2.detach();
+
+            body.removeChild(iframe);
+        })();
+    }
+
+    api.features.selectionSupportsMultipleRanges = selectionSupportsMultipleRanges;
+    api.features.collapsedNonEditableSelectionsSupported = collapsedNonEditableSelectionsSupported;
+
+    // ControlRanges
+    var implementsControlRange = false, testControlRange;
+
+    if (body && util.isHostMethod(body, "createControlRange")) {
+        testControlRange = body.createControlRange();
+        if (util.areHostProperties(testControlRange, ["item", "add"])) {
+            implementsControlRange = true;
+        }
+    }
+    api.features.implementsControlRange = implementsControlRange;
+
+    // Selection collapsedness
+    if (selectionHasAnchorAndFocus) {
+        selectionIsCollapsed = function(sel) {
+            return sel.anchorNode === sel.focusNode && sel.anchorOffset === sel.focusOffset;
+        };
+    } else {
+        selectionIsCollapsed = function(sel) {
+            return sel.rangeCount ? sel.getRangeAt(sel.rangeCount - 1).collapsed : false;
+        };
+    }
+
+    function updateAnchorAndFocusFromRange(sel, range, backwards) {
+        var anchorPrefix = backwards ? "end" : "start", focusPrefix = backwards ? "start" : "end";
+        sel.anchorNode = range[anchorPrefix + "Container"];
+        sel.anchorOffset = range[anchorPrefix + "Offset"];
+        sel.focusNode = range[focusPrefix + "Container"];
+        sel.focusOffset = range[focusPrefix + "Offset"];
+    }
+
+    function updateAnchorAndFocusFromNativeSelection(sel) {
+        var nativeSel = sel.nativeSelection;
+        sel.anchorNode = nativeSel.anchorNode;
+        sel.anchorOffset = nativeSel.anchorOffset;
+        sel.focusNode = nativeSel.focusNode;
+        sel.focusOffset = nativeSel.focusOffset;
+    }
+
+    function updateEmptySelection(sel) {
+        sel.anchorNode = sel.focusNode = null;
+        sel.anchorOffset = sel.focusOffset = 0;
+        sel.rangeCount = 0;
+        sel.isCollapsed = true;
+        sel._ranges.length = 0;
+    }
+
+    function getNativeRange(range) {
+        var nativeRange;
+        if (range instanceof DomRange) {
+            nativeRange = range._selectionNativeRange;
+            if (!nativeRange) {
+                nativeRange = api.createNativeRange(dom.getDocument(range.startContainer));
+                nativeRange.setEnd(range.endContainer, range.endOffset);
+                nativeRange.setStart(range.startContainer, range.startOffset);
+                range._selectionNativeRange = nativeRange;
+                range.attachListener("detach", function() {
+
+                    this._selectionNativeRange = null;
+                });
+            }
+        } else if (range instanceof WrappedRange) {
+            nativeRange = range.nativeRange;
+        } else if (api.features.implementsDomRange && (range instanceof dom.getWindow(range.startContainer).Range)) {
+            nativeRange = range;
+        }
+        return nativeRange;
+    }
+
+    function rangeContainsSingleElement(rangeNodes) {
+        if (!rangeNodes.length || rangeNodes[0].nodeType != 1) {
+            return false;
+        }
+        for (var i = 1, len = rangeNodes.length; i < len; ++i) {
+            if (!dom.isAncestorOf(rangeNodes[0], rangeNodes[i])) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    function getSingleElementFromRange(range) {
+        var nodes = range.getNodes();
+        if (!rangeContainsSingleElement(nodes)) {
+            throw new Error("getSingleElementFromRange: range " + range.inspect() + " did not consist of a single element");
+        }
+        return nodes[0];
+    }
+
+    function isTextRange(range) {
+        return !!range && typeof range.text != "undefined";
+    }
+
+    function updateFromTextRange(sel, range) {
+        // Create a Range from the selected TextRange
+        var wrappedRange = new WrappedRange(range);
+        sel._ranges = [wrappedRange];
+
+        updateAnchorAndFocusFromRange(sel, wrappedRange, false);
+        sel.rangeCount = 1;
+        sel.isCollapsed = wrappedRange.collapsed;
+    }
+
+    function updateControlSelection(sel) {
+        // Update the wrapped selection based on what's now in the native selection
+        sel._ranges.length = 0;
+        if (sel.docSelection.type == "None") {
+            updateEmptySelection(sel);
+        } else {
+            var controlRange = sel.docSelection.createRange();
+            if (isTextRange(controlRange)) {
+                // This case (where the selection type is "Control" and calling createRange() on the selection returns
+                // a TextRange) can happen in IE 9. It happens, for example, when all elements in the selected
+                // ControlRange have been removed from the ControlRange and removed from the document.
+                updateFromTextRange(sel, controlRange);
+            } else {
+                sel.rangeCount = controlRange.length;
+                var range, doc = dom.getDocument(controlRange.item(0));
+                for (var i = 0; i < sel.rangeCount; ++i) {
+                    range = api.createRange(doc);
+                    range.selectNode(controlRange.item(i));
+                    sel._ranges.push(range);
+                }
+                sel.isCollapsed = sel.rangeCount == 1 && sel._ranges[0].collapsed;
+                updateAnchorAndFocusFromRange(sel, sel._ranges[sel.rangeCount - 1], false);
+            }
+        }
+    }
+
+    function addRangeToControlSelection(sel, range) {
+        var controlRange = sel.docSelection.createRange();
+        var rangeElement = getSingleElementFromRange(range);
+
+        // Create a new ControlRange containing all the elements in the selected ControlRange plus the element
+        // contained by the supplied range
+        var doc = dom.getDocument(controlRange.item(0));
+        var newControlRange = dom.getBody(doc).createControlRange();
+        for (var i = 0, len = controlRange.length; i < len; ++i) {
+            newControlRange.add(controlRange.item(i));
+        }
+        try {
+            newControlRange.add(rangeElement);
+        } catch (ex) {
+            throw new Error("addRange(): Element within the specified Range could not be added to control selection (does it have layout?)");
+        }
+        newControlRange.select();
+
+        // Update the wrapped selection based on what's now in the native selection
+        updateControlSelection(sel);
+    }
+
+    var getSelectionRangeAt;
+
+    if (util.isHostMethod(testSelection,  "getRangeAt")) {
+        getSelectionRangeAt = function(sel, index) {
+            try {
+                return sel.getRangeAt(index);
+            } catch(ex) {
+                return null;
+            }
+        };
+    } else if (selectionHasAnchorAndFocus) {
+        getSelectionRangeAt = function(sel) {
+            var doc = dom.getDocument(sel.anchorNode);
+            var range = api.createRange(doc);
+            range.setStart(sel.anchorNode, sel.anchorOffset);
+            range.setEnd(sel.focusNode, sel.focusOffset);
+
+            // Handle the case when the selection was selected backwards (from the end to the start in the
+            // document)
+            if (range.collapsed !== this.isCollapsed) {
+                range.setStart(sel.focusNode, sel.focusOffset);
+                range.setEnd(sel.anchorNode, sel.anchorOffset);
+            }
+
+            return range;
+        };
+    }
+
+    /**
+     * @constructor
+     */
+    function WrappedSelection(selection, docSelection, win) {
+        this.nativeSelection = selection;
+        this.docSelection = docSelection;
+        this._ranges = [];
+        this.win = win;
+        this.refresh();
+    }
+
+    api.getSelection = function(win) {
+        win = win || window;
+        var sel = win[windowPropertyName];
+        var nativeSel = getSelection(win), docSel = implementsDocSelection ? getDocSelection(win) : null;
+        if (sel) {
+            sel.nativeSelection = nativeSel;
+            sel.docSelection = docSel;
+            sel.refresh(win);
+        } else {
+            sel = new WrappedSelection(nativeSel, docSel, win);
+            win[windowPropertyName] = sel;
+        }
+        return sel;
+    };
+
+    api.getIframeSelection = function(iframeEl) {
+        return api.getSelection(dom.getIframeWindow(iframeEl));
+    };
+
+    var selProto = WrappedSelection.prototype;
+
+    function createControlSelection(sel, ranges) {
+        // Ensure that the selection becomes of type "Control"
+        var doc = dom.getDocument(ranges[0].startContainer);
+        var controlRange = dom.getBody(doc).createControlRange();
+        for (var i = 0, el; i < rangeCount; ++i) {
+            el = getSingleElementFromRange(ranges[i]);
+            try {
+                controlRange.add(el);
+            } catch (ex) {
+                throw new Error("setRanges(): Element within the one of the specified Ranges could not be added to control selection (does it have layout?)");
+            }
+        }
+        controlRange.select();
+
+        // Update the wrapped selection based on what's now in the native selection
+        updateControlSelection(sel);
+    }
+
+    // Selecting a range
+    if (!useDocumentSelection && selectionHasAnchorAndFocus && util.areHostMethods(testSelection, ["removeAllRanges", "addRange"])) {
+        selProto.removeAllRanges = function() {
+            this.nativeSelection.removeAllRanges();
+            updateEmptySelection(this);
+        };
+
+        var addRangeBackwards = function(sel, range) {
+            var doc = DomRange.getRangeDocument(range);
+            var endRange = api.createRange(doc);
+            endRange.collapseToPoint(range.endContainer, range.endOffset);
+            sel.nativeSelection.addRange(getNativeRange(endRange));
+            sel.nativeSelection.extend(range.startContainer, range.startOffset);
+            sel.refresh();
+        };
+
+        if (selectionHasRangeCount) {
+            selProto.addRange = function(range, backwards) {
+                if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
+                    addRangeToControlSelection(this, range);
+                } else {
+                    if (backwards && selectionHasExtend) {
+                        addRangeBackwards(this, range);
+                    } else {
+                        var previousRangeCount;
+                        if (selectionSupportsMultipleRanges) {
+                            previousRangeCount = this.rangeCount;
+                        } else {
+                            this.removeAllRanges();
+                            previousRangeCount = 0;
+                        }
+                        this.nativeSelection.addRange(getNativeRange(range));
+
+                        // Check whether adding the range was successful
+                        this.rangeCount = this.nativeSelection.rangeCount;
+
+                        if (this.rangeCount == previousRangeCount + 1) {
+                            // The range was added successfully
+
+                            // Check whether the range that we added to the selection is reflected in the last range extracted from
+                            // the selection
+                            if (api.config.checkSelectionRanges) {
+                                var nativeRange = getSelectionRangeAt(this.nativeSelection, this.rangeCount - 1);
+                                if (nativeRange && !DomRange.rangesEqual(nativeRange, range)) {
+                                    // Happens in WebKit with, for example, a selection placed at the start of a text node
+                                    range = new WrappedRange(nativeRange);
+                                }
+                            }
+                            this._ranges[this.rangeCount - 1] = range;
+                            updateAnchorAndFocusFromRange(this, range, selectionIsBackwards(this.nativeSelection));
+                            this.isCollapsed = selectionIsCollapsed(this);
+                        } else {
+                            // The range was not added successfully. The simplest thing is to refresh
+                            this.refresh();
+                        }
+                    }
+                }
+            };
+        } else {
+            selProto.addRange = function(range, backwards) {
+                if (backwards && selectionHasExtend) {
+                    addRangeBackwards(this, range);
+                } else {
+                    this.nativeSelection.addRange(getNativeRange(range));
+                    this.refresh();
+                }
+            };
+        }
+
+        selProto.setRanges = function(ranges) {
+            if (implementsControlRange && ranges.length > 1) {
+                createControlSelection(this, ranges);
+            } else {
+                this.removeAllRanges();
+                for (var i = 0, len = ranges.length; i < len; ++i) {
+                    this.addRange(ranges[i]);
+                }
+            }
+        };
+    } else if (util.isHostMethod(testSelection, "empty") && util.isHostMethod(testRange, "select") &&
+               implementsControlRange && useDocumentSelection) {
+
+        selProto.removeAllRanges = function() {
+            // Added try/catch as fix for issue #21
+            try {
+                this.docSelection.empty();
+
+                // Check for empty() not working (issue #24)
+                if (this.docSelection.type != "None") {
+                    // Work around failure to empty a control selection by instead selecting a TextRange and then
+                    // calling empty()
+                    var doc;
+                    if (this.anchorNode) {
+                        doc = dom.getDocument(this.anchorNode);
+                    } else if (this.docSelection.type == CONTROL) {
+                        var controlRange = this.docSelection.createRange();
+                        if (controlRange.length) {
+                            doc = dom.getDocument(controlRange.item(0)).body.createTextRange();
+                        }
+                    }
+                    if (doc) {
+                        var textRange = doc.body.createTextRange();
+                        textRange.select();
+                        this.docSelection.empty();
+                    }
+                }
+            } catch(ex) {}
+            updateEmptySelection(this);
+        };
+
+        selProto.addRange = function(range) {
+            if (this.docSelection.type == CONTROL) {
+                addRangeToControlSelection(this, range);
+            } else {
+                WrappedRange.rangeToTextRange(range).select();
+                this._ranges[0] = range;
+                this.rangeCount = 1;
+                this.isCollapsed = this._ranges[0].collapsed;
+                updateAnchorAndFocusFromRange(this, range, false);
+            }
+        };
+
+        selProto.setRanges = function(ranges) {
+            this.removeAllRanges();
+            var rangeCount = ranges.length;
+            if (rangeCount > 1) {
+                createControlSelection(this, ranges);
+            } else if (rangeCount) {
+                this.addRange(ranges[0]);
+            }
+        };
+    } else {
+        module.fail("No means of selecting a Range or TextRange was found");
+        return false;
+    }
+
+    selProto.getRangeAt = function(index) {
+        if (index < 0 || index >= this.rangeCount) {
+            throw new DOMException("INDEX_SIZE_ERR");
+        } else {
+            return this._ranges[index];
+        }
+    };
+
+    var refreshSelection;
+
+    if (useDocumentSelection) {
+        refreshSelection = function(sel) {
+            var range;
+            if (api.isSelectionValid(sel.win)) {
+                range = sel.docSelection.createRange();
+            } else {
+                range = dom.getBody(sel.win.document).createTextRange();
+                range.collapse(true);
+            }
+
+
+            if (sel.docSelection.type == CONTROL) {
+                updateControlSelection(sel);
+            } else if (isTextRange(range)) {
+                updateFromTextRange(sel, range);
+            } else {
+                updateEmptySelection(sel);
+            }
+        };
+    } else if (util.isHostMethod(testSelection, "getRangeAt") && typeof testSelection.rangeCount == "number") {
+        refreshSelection = function(sel) {
+            if (implementsControlRange && implementsDocSelection && sel.docSelection.type == CONTROL) {
+                updateControlSelection(sel);
+            } else {
+                sel._ranges.length = sel.rangeCount = sel.nativeSelection.rangeCount;
+                if (sel.rangeCount) {
+                    for (var i = 0, len = sel.rangeCount; i < len; ++i) {
+                        sel._ranges[i] = new api.WrappedRange(sel.nativeSelection.getRangeAt(i));
+                    }
+                    updateAnchorAndFocusFromRange(sel, sel._ranges[sel.rangeCount - 1], selectionIsBackwards(sel.nativeSelection));
+                    sel.isCollapsed = selectionIsCollapsed(sel);
+                } else {
+                    updateEmptySelection(sel);
+                }
+            }
+        };
+    } else if (selectionHasAnchorAndFocus && typeof testSelection.isCollapsed == BOOLEAN && typeof testRange.collapsed == BOOLEAN && api.features.implementsDomRange) {
+        refreshSelection = function(sel) {
+            var range, nativeSel = sel.nativeSelection;
+            if (nativeSel.anchorNode) {
+                range = getSelectionRangeAt(nativeSel, 0);
+                sel._ranges = [range];
+                sel.rangeCount = 1;
+                updateAnchorAndFocusFromNativeSelection(sel);
+                sel.isCollapsed = selectionIsCollapsed(sel);
+            } else {
+                updateEmptySelection(sel);
+            }
+        };
+    } else {
+        module.fail("No means of obtaining a Range or TextRange from the user's selection was found");
+        return false;
+    }
+
+    selProto.refresh = function(checkForChanges) {
+        var oldRanges = checkForChanges ? this._ranges.slice(0) : null;
+        refreshSelection(this);
+        if (checkForChanges) {
+            var i = oldRanges.length;
+            if (i != this._ranges.length) {
+                return false;
+            }
+            while (i--) {
+                if (!DomRange.rangesEqual(oldRanges[i], this._ranges[i])) {
+                    return false;
+                }
+            }
+            return true;
+        }
+    };
+
+    // Removal of a single range
+    var removeRangeManually = function(sel, range) {
+        var ranges = sel.getAllRanges(), removed = false;
+        sel.removeAllRanges();
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            if (removed || range !== ranges[i]) {
+                sel.addRange(ranges[i]);
+            } else {
+                // According to the draft WHATWG Range spec, the same range may be added to the selection multiple
+                // times. removeRange should only remove the first instance, so the following ensures only the first
+                // instance is removed
+                removed = true;
+            }
+        }
+        if (!sel.rangeCount) {
+            updateEmptySelection(sel);
+        }
+    };
+
+    if (implementsControlRange) {
+        selProto.removeRange = function(range) {
+            if (this.docSelection.type == CONTROL) {
+                var controlRange = this.docSelection.createRange();
+                var rangeElement = getSingleElementFromRange(range);
+
+                // Create a new ControlRange containing all the elements in the selected ControlRange minus the
+                // element contained by the supplied range
+                var doc = dom.getDocument(controlRange.item(0));
+                var newControlRange = dom.getBody(doc).createControlRange();
+                var el, removed = false;
+                for (var i = 0, len = controlRange.length; i < len; ++i) {
+                    el = controlRange.item(i);
+                    if (el !== rangeElement || removed) {
+                        newControlRange.add(controlRange.item(i));
+                    } else {
+                        removed = true;
+                    }
+                }
+                newControlRange.select();
+
+                // Update the wrapped selection based on what's now in the native selection
+                updateControlSelection(this);
+            } else {
+                removeRangeManually(this, range);
+            }
+        };
+    } else {
+        selProto.removeRange = function(range) {
+            removeRangeManually(this, range);
+        };
+    }
+
+    // Detecting if a selection is backwards
+    var selectionIsBackwards;
+    if (!useDocumentSelection && selectionHasAnchorAndFocus && api.features.implementsDomRange) {
+        selectionIsBackwards = function(sel) {
+            var backwards = false;
+            if (sel.anchorNode) {
+                backwards = (dom.comparePoints(sel.anchorNode, sel.anchorOffset, sel.focusNode, sel.focusOffset) == 1);
+            }
+            return backwards;
+        };
+
+        selProto.isBackwards = function() {
+            return selectionIsBackwards(this);
+        };
+    } else {
+        selectionIsBackwards = selProto.isBackwards = function() {
+            return false;
+        };
+    }
+
+    // Selection text
+    // This is conformant to the new WHATWG DOM Range draft spec but differs from WebKit and Mozilla's implementation
+    selProto.toString = function() {
+
+        var rangeTexts = [];
+        for (var i = 0, len = this.rangeCount; i < len; ++i) {
+            rangeTexts[i] = "" + this._ranges[i];
+        }
+        return rangeTexts.join("");
+    };
+
+    function assertNodeInSameDocument(sel, node) {
+        if (sel.anchorNode && (dom.getDocument(sel.anchorNode) !== dom.getDocument(node))) {
+            throw new DOMException("WRONG_DOCUMENT_ERR");
+        }
+    }
+
+    // No current browsers conform fully to the HTML 5 draft spec for this method, so Rangy's own method is always used
+    selProto.collapse = function(node, offset) {
+        assertNodeInSameDocument(this, node);
+        var range = api.createRange(dom.getDocument(node));
+        range.collapseToPoint(node, offset);
+        this.removeAllRanges();
+        this.addRange(range);
+        this.isCollapsed = true;
+    };
+
+    selProto.collapseToStart = function() {
+        if (this.rangeCount) {
+            var range = this._ranges[0];
+            this.collapse(range.startContainer, range.startOffset);
+        } else {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    };
+
+    selProto.collapseToEnd = function() {
+        if (this.rangeCount) {
+            var range = this._ranges[this.rangeCount - 1];
+            this.collapse(range.endContainer, range.endOffset);
+        } else {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    };
+
+    // The HTML 5 spec is very specific on how selectAllChildren should be implemented so the native implementation is
+    // never used by Rangy.
+    selProto.selectAllChildren = function(node) {
+        assertNodeInSameDocument(this, node);
+        var range = api.createRange(dom.getDocument(node));
+        range.selectNodeContents(node);
+        this.removeAllRanges();
+        this.addRange(range);
+    };
+
+    selProto.deleteFromDocument = function() {
+        // Sepcial behaviour required for Control selections
+        if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
+            var controlRange = this.docSelection.createRange();
+            var element;
+            while (controlRange.length) {
+                element = controlRange.item(0);
+                controlRange.remove(element);
+                element.parentNode.removeChild(element);
+            }
+            this.refresh();
+        } else if (this.rangeCount) {
+            var ranges = this.getAllRanges();
+            this.removeAllRanges();
+            for (var i = 0, len = ranges.length; i < len; ++i) {
+                ranges[i].deleteContents();
+            }
+            // The HTML5 spec says nothing about what the selection should contain after calling deleteContents on each
+            // range. Firefox moves the selection to where the final selected range was, so we emulate that
+            this.addRange(ranges[len - 1]);
+        }
+    };
+
+    // The following are non-standard extensions
+    selProto.getAllRanges = function() {
+        return this._ranges.slice(0);
+    };
+
+    selProto.setSingleRange = function(range) {
+        this.setRanges( [range] );
+    };
+
+    selProto.containsNode = function(node, allowPartial) {
+        for (var i = 0, len = this._ranges.length; i < len; ++i) {
+            if (this._ranges[i].containsNode(node, allowPartial)) {
+                return true;
+            }
+        }
+        return false;
+    };
+
+    selProto.toHtml = function() {
+        var html = "";
+        if (this.rangeCount) {
+            var container = DomRange.getRangeDocument(this._ranges[0]).createElement("div");
+            for (var i = 0, len = this._ranges.length; i < len; ++i) {
+                container.appendChild(this._ranges[i].cloneContents());
+            }
+            html = container.innerHTML;
+        }
+        return html;
+    };
+
+    function inspect(sel) {
+        var rangeInspects = [];
+        var anchor = new DomPosition(sel.anchorNode, sel.anchorOffset);
+        var focus = new DomPosition(sel.focusNode, sel.focusOffset);
+        var name = (typeof sel.getName == "function") ? sel.getName() : "Selection";
+
+        if (typeof sel.rangeCount != "undefined") {
+            for (var i = 0, len = sel.rangeCount; i < len; ++i) {
+                rangeInspects[i] = DomRange.inspect(sel.getRangeAt(i));
+            }
+        }
+        return "[" + name + "(Ranges: " + rangeInspects.join(", ") +
+                ")(anchor: " + anchor.inspect() + ", focus: " + focus.inspect() + "]";
+
+    }
+
+    selProto.getName = function() {
+        return "WrappedSelection";
+    };
+
+    selProto.inspect = function() {
+        return inspect(this);
+    };
+
+    selProto.detach = function() {
+        this.win[windowPropertyName] = null;
+        this.win = this.anchorNode = this.focusNode = null;
+    };
+
+    WrappedSelection.inspect = inspect;
+
+    api.Selection = WrappedSelection;
+
+    api.selectionPrototype = selProto;
+
+    api.addCreateMissingNativeApiListener(function(win) {
+        if (typeof win.getSelection == "undefined") {
+            win.getSelection = function() {
+                return api.getSelection(this);
+            };
+        }
+        win = null;
+    });
+});
+
+/**
+ * @license CSS Class Applier module for Rangy.
+ * Adds, removes and toggles CSS classes on Ranges and Selections
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("CssClassApplier", function(api, module) {
+    api.requireModules( ["WrappedSelection", "WrappedRange"] );
+
+    var dom = api.dom;
+
+
+
+    var defaultTagName = "span";
+
+    function trim(str) {
+        return str.replace(/^\s\s*/, "").replace(/\s\s*$/, "");
+    }
+
+    function hasClass(el, cssClass) {
+        return el.className && new RegExp("(?:^|\\s)" + cssClass + "(?:\\s|$)").test(el.className);
+    }
+
+    function addClass(el, cssClass) {
+        if (el.className) {
+            if (!hasClass(el, cssClass)) {
+                el.className += " " + cssClass;
+            }
+        } else {
+            el.className = cssClass;
+        }
+    }
+
+    var removeClass = (function() {
+        function replacer(matched, whiteSpaceBefore, whiteSpaceAfter) {
+            return (whiteSpaceBefore && whiteSpaceAfter) ? " " : "";
+        }
+
+        return function(el, cssClass) {
+            if (el.className) {
+                el.className = el.className.replace(new RegExp("(?:^|\\s)" + cssClass + "(?:\\s|$)"), replacer);
+            }
+        };
+    })();
+
+    function sortClassName(className) {
+        return className.split(/\s+/).sort().join(" ");
+    }
+
+    function getSortedClassName(el) {
+        return sortClassName(el.className);
+    }
+
+    function haveSameClasses(el1, el2) {
+        return getSortedClassName(el1) == getSortedClassName(el2);
+    }
+
+    function replaceWithOwnChildren(el) {
+
+        var parent = el.parentNode;
+        while (el.hasChildNodes()) {
+            parent.insertBefore(el.firstChild, el);
+        }
+        parent.removeChild(el);
+    }
+
+    function rangeSelectsAnyText(range, textNode) {
+        var textRange = range.cloneRange();
+        textRange.selectNodeContents(textNode);
+
+        var intersectionRange = textRange.intersection(range);
+        var text = intersectionRange ? intersectionRange.toString() : "";
+        textRange.detach();
+
+        return text != "";
+    }
+
+    function getEffectiveTextNodes(range) {
+        return range.getNodes([3], function(textNode) {
+            return rangeSelectsAnyText(range, textNode);
+        });
+    }
+
+    function elementsHaveSameNonClassAttributes(el1, el2) {
+        if (el1.attributes.length != el2.attributes.length) return false;
+        for (var i = 0, len = el1.attributes.length, attr1, attr2, name; i < len; ++i) {
+            attr1 = el1.attributes[i];
+            name = attr1.name;
+            if (name != "class") {
+                attr2 = el2.attributes.getNamedItem(name);
+                if (attr1.specified != attr2.specified) return false;
+                if (attr1.specified && attr1.nodeValue !== attr2.nodeValue) return false;
+            }
+        }
+        return true;
+    }
+
+    function elementHasNonClassAttributes(el, exceptions) {
+        for (var i = 0, len = el.attributes.length, attrName; i < len; ++i) {
+            attrName = el.attributes[i].name;
+            if ( !(exceptions && dom.arrayContains(exceptions, attrName)) && el.attributes[i].specified && attrName != "class") {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    function elementHasProps(el, props) {
+        for (var p in props) {
+            if (props.hasOwnProperty(p) && el[p] !== props[p]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    var getComputedStyleProperty;
+
+    if (typeof window.getComputedStyle != "undefined") {
+        getComputedStyleProperty = function(el, propName) {
+            return dom.getWindow(el).getComputedStyle(el, null)[propName];
+        };
+    } else if (typeof document.documentElement.currentStyle != "undefined") {
+        getComputedStyleProperty = function(el, propName) {
+            return el.currentStyle[propName];
+        };
+    } else {
+        module.fail("No means of obtaining computed style properties found");
+    }
+
+    var isEditableElement;
+
+    (function() {
+        var testEl = document.createElement("div");
+        if (typeof testEl.isContentEditable == "boolean") {
+            isEditableElement = function(node) {
+                return node && node.nodeType == 1 && node.isContentEditable;
+            };
+        } else {
+            isEditableElement = function(node) {
+                if (!node || node.nodeType != 1 || node.contentEditable == "false") {
+                    return false;
+                }
+                return node.contentEditable == "true" || isEditableElement(node.parentNode);
+            };
+        }
+    })();
+
+    function isEditingHost(node) {
+        var parent;
+        return node && node.nodeType == 1
+            && (( (parent = node.parentNode) && parent.nodeType == 9 && parent.designMode == "on")
+            || (isEditableElement(node) && !isEditableElement(node.parentNode)));
+    }
+
+    function isEditable(node) {
+        return (isEditableElement(node) || (node.nodeType != 1 && isEditableElement(node.parentNode))) && !isEditingHost(node);
+    }
+
+    var inlineDisplayRegex = /^inline(-block|-table)?$/i;
+
+    function isNonInlineElement(node) {
+        return node && node.nodeType == 1 && !inlineDisplayRegex.test(getComputedStyleProperty(node, "display"));
+    }
+
+    // White space characters as defined by HTML 4 (http://www.w3.org/TR/html401/struct/text.html)
+    var htmlNonWhiteSpaceRegex = /[^\r\n\t\f \u200B]/;
+
+    function isUnrenderedWhiteSpaceNode(node) {
+        if (node.data.length == 0) {
+            return true;
+        }
+        if (htmlNonWhiteSpaceRegex.test(node.data)) {
+            return false;
+        }
+        var cssWhiteSpace = getComputedStyleProperty(node.parentNode, "whiteSpace");
+        switch (cssWhiteSpace) {
+            case "pre":
+            case "pre-wrap":
+            case "-moz-pre-wrap":
+                return false;
+            case "pre-line":
+                if (/[\r\n]/.test(node.data)) {
+                    return false;
+                }
+        }
+
+        // We now have a whitespace-only text node that may be rendered depending on its context. If it is adjacent to a
+        // non-inline element, it will not be rendered. This seems to be a good enough definition.
+        return isNonInlineElement(node.previousSibling) || isNonInlineElement(node.nextSibling);
+    }
+
+    function isSplitPoint(node, offset) {
+        if (dom.isCharacterDataNode(node)) {
+            if (offset == 0) {
+                return !!node.previousSibling;
+            } else if (offset == node.length) {
+                return !!node.nextSibling;
+            } else {
+                return true;
+            }
+        }
+
+        return offset > 0 && offset < node.childNodes.length;
+    }
+
+    function splitNodeAt(node, descendantNode, descendantOffset, rangesToPreserve) {
+        var newNode;
+        var splitAtStart = (descendantOffset == 0);
+
+        if (dom.isAncestorOf(descendantNode, node)) {
+
+            return node;
+        }
+
+        if (dom.isCharacterDataNode(descendantNode)) {
+            if (descendantOffset == 0) {
+                descendantOffset = dom.getNodeIndex(descendantNode);
+                descendantNode = descendantNode.parentNode;
+            } else if (descendantOffset == descendantNode.length) {
+                descendantOffset = dom.getNodeIndex(descendantNode) + 1;
+                descendantNode = descendantNode.parentNode;
+            } else {
+                throw module.createError("splitNodeAt should not be called with offset in the middle of a data node ("
+                    + descendantOffset + " in " + descendantNode.data);
+            }
+        }
+
+        if (isSplitPoint(descendantNode, descendantOffset)) {
+            if (!newNode) {
+                newNode = descendantNode.cloneNode(false);
+                if (newNode.id) {
+                    newNode.removeAttribute("id");
+                }
+                var child;
+                while ((child = descendantNode.childNodes[descendantOffset])) {
+                    newNode.appendChild(child);
+                }
+                dom.insertAfter(newNode, descendantNode);
+            }
+            return (descendantNode == node) ? newNode : splitNodeAt(node, newNode.parentNode, dom.getNodeIndex(newNode), rangesToPreserve);
+        } else if (node != descendantNode) {
+            newNode = descendantNode.parentNode;
+
+            // Work out a new split point in the parent node
+            var newNodeIndex = dom.getNodeIndex(descendantNode);
+
+            if (!splitAtStart) {
+                newNodeIndex++;
+            }
+            return splitNodeAt(node, newNode, newNodeIndex, rangesToPreserve);
+        }
+        return node;
+    }
+
+    function areElementsMergeable(el1, el2) {
+        return el1.tagName == el2.tagName && haveSameClasses(el1, el2) && elementsHaveSameNonClassAttributes(el1, el2);
+    }
+
+    function createAdjacentMergeableTextNodeGetter(forward) {
+        var propName = forward ? "nextSibling" : "previousSibling";
+
+        return function(textNode, checkParentElement) {
+            var el = textNode.parentNode;
+            var adjacentNode = textNode[propName];
+            if (adjacentNode) {
+                // Can merge if the node's previous/next sibling is a text node
+                if (adjacentNode && adjacentNode.nodeType == 3) {
+                    return adjacentNode;
+                }
+            } else if (checkParentElement) {
+                // Compare text node parent element with its sibling
+                adjacentNode = el[propName];
+
+                if (adjacentNode && adjacentNode.nodeType == 1 && areElementsMergeable(el, adjacentNode)) {
+                    return adjacentNode[forward ? "firstChild" : "lastChild"];
+                }
+            }
+            return null;
+        }
+    }
+
+    var getPreviousMergeableTextNode = createAdjacentMergeableTextNodeGetter(false),
+        getNextMergeableTextNode = createAdjacentMergeableTextNodeGetter(true);
+
+
+    function Merge(firstNode) {
+        this.isElementMerge = (firstNode.nodeType == 1);
+        this.firstTextNode = this.isElementMerge ? firstNode.lastChild : firstNode;
+        this.textNodes = [this.firstTextNode];
+    }
+
+    Merge.prototype = {
+        doMerge: function() {
+            var textBits = [], textNode, parent, text;
+            for (var i = 0, len = this.textNodes.length; i < len; ++i) {
+                textNode = this.textNodes[i];
+                parent = textNode.parentNode;
+                textBits[i] = textNode.data;
+                if (i) {
+                    parent.removeChild(textNode);
+                    if (!parent.hasChildNodes()) {
+                        parent.parentNode.removeChild(parent);
+                    }
+                }
+            }
+            this.firstTextNode.data = text = textBits.join("");
+            return text;
+        },
+
+        getLength: function() {
+            var i = this.textNodes.length, len = 0;
+            while (i--) {
+                len += this.textNodes[i].length;
+            }
+            return len;
+        },
+
+        toString: function() {
+            var textBits = [];
+            for (var i = 0, len = this.textNodes.length; i < len; ++i) {
+                textBits[i] = "'" + this.textNodes[i].data + "'";
+            }
+            return "[Merge(" + textBits.join(",") + ")]";
+        }
+    };
+
+    var optionProperties = ["elementTagName", "ignoreWhiteSpace", "applyToEditableOnly"];
+
+    // Allow "class" as a property name in object properties
+    var mappedPropertyNames = {"class" : "className"};
+
+    function CssClassApplier(cssClass, options, tagNames) {
+        this.cssClass = cssClass;
+        var normalize, i, len, propName;
+
+        var elementPropertiesFromOptions = null;
+
+        // Initialize from options object
+        if (typeof options == "object" && options !== null) {
+            tagNames = options.tagNames;
+            elementPropertiesFromOptions = options.elementProperties;
+
+            for (i = 0; propName = optionProperties[i++]; ) {
+                if (options.hasOwnProperty(propName)) {
+                    this[propName] = options[propName];
+                }
+            }
+            normalize = options.normalize;
+        } else {
+            normalize = options;
+        }
+
+        // Backwards compatibility: the second parameter can also be a Boolean indicating whether normalization
+        this.normalize = (typeof normalize == "undefined") ? true : normalize;
+
+        // Initialize element properties and attribute exceptions
+        this.attrExceptions = [];
+        var el = document.createElement(this.elementTagName);
+        this.elementProperties = {};
+        for (var p in elementPropertiesFromOptions) {
+            if (elementPropertiesFromOptions.hasOwnProperty(p)) {
+                // Map "class" to "className"
+                if (mappedPropertyNames.hasOwnProperty(p)) {
+                    p = mappedPropertyNames[p];
+                }
+                el[p] = elementPropertiesFromOptions[p];
+
+                // Copy the property back from the dummy element so that later comparisons to check whether elements
+                // may be removed are checking against the right value. For example, the href property of an element
+                // returns a fully qualified URL even if it was previously assigned a relative URL.
+                this.elementProperties[p] = el[p];
+                this.attrExceptions.push(p);
+            }
+        }
+
+        this.elementSortedClassName = this.elementProperties.hasOwnProperty("className") ?
+            sortClassName(this.elementProperties.className + " " + cssClass) : cssClass;
+
+        // Initialize tag names
+        this.applyToAnyTagName = false;
+        var type = typeof tagNames;
+        if (type == "string") {
+            if (tagNames == "*") {
+                this.applyToAnyTagName = true;
+            } else {
+                this.tagNames = trim(tagNames.toLowerCase()).split(/\s*,\s*/);
+            }
+        } else if (type == "object" && typeof tagNames.length == "number") {
+            this.tagNames = [];
+            for (i = 0, len = tagNames.length; i < len; ++i) {
+                if (tagNames[i] == "*") {
+                    this.applyToAnyTagName = true;
+                } else {
+                    this.tagNames.push(tagNames[i].toLowerCase());
+                }
+            }
+        } else {
+            this.tagNames = [this.elementTagName];
+        }
+    }
+
+    CssClassApplier.prototype = {
+        elementTagName: defaultTagName,
+        elementProperties: {},
+        ignoreWhiteSpace: true,
+        applyToEditableOnly: false,
+
+        hasClass: function(node) {
+            return node.nodeType == 1 && dom.arrayContains(this.tagNames, node.tagName.toLowerCase()) && hasClass(node, this.cssClass);
+        },
+
+        getSelfOrAncestorWithClass: function(node) {
+            while (node) {
+                if (this.hasClass(node, this.cssClass)) {
+                    return node;
+                }
+                node = node.parentNode;
+            }
+            return null;
+        },
+
+        isModifiable: function(node) {
+            return !this.applyToEditableOnly || isEditable(node);
+        },
+
+        // White space adjacent to an unwrappable node can be ignored for wrapping
+        isIgnorableWhiteSpaceNode: function(node) {
+            return this.ignoreWhiteSpace && node && node.nodeType == 3 && isUnrenderedWhiteSpaceNode(node);
+        },
+
+        // Normalizes nodes after applying a CSS class to a Range.
+        postApply: function(textNodes, range, isUndo) {
+
+            var firstNode = textNodes[0], lastNode = textNodes[textNodes.length - 1];
+
+            var merges = [], currentMerge;
+
+            var rangeStartNode = firstNode, rangeEndNode = lastNode;
+            var rangeStartOffset = 0, rangeEndOffset = lastNode.length;
+
+            var textNode, precedingTextNode;
+
+            for (var i = 0, len = textNodes.length; i < len; ++i) {
+                textNode = textNodes[i];
+                precedingTextNode = getPreviousMergeableTextNode(textNode, !isUndo);
+
+                if (precedingTextNode) {
+                    if (!currentMerge) {
+                        currentMerge = new Merge(precedingTextNode);
+                        merges.push(currentMerge);
+                    }
+                    currentMerge.textNodes.push(textNode);
+                    if (textNode === firstNode) {
+                        rangeStartNode = currentMerge.firstTextNode;
+                        rangeStartOffset = rangeStartNode.length;
+                    }
+                    if (textNode === lastNode) {
+                        rangeEndNode = currentMerge.firstTextNode;
+                        rangeEndOffset = currentMerge.getLength();
+                    }
+                } else {
+                    currentMerge = null;
+                }
+            }
+
+            // Test whether the first node after the range needs merging
+            var nextTextNode = getNextMergeableTextNode(lastNode, !isUndo);
+
+            if (nextTextNode) {
+                if (!currentMerge) {
+                    currentMerge = new Merge(lastNode);
+                    merges.push(currentMerge);
+                }
+                currentMerge.textNodes.push(nextTextNode);
+            }
+
+            // Do the merges
+            if (merges.length) {
+
+                for (i = 0, len = merges.length; i < len; ++i) {
+                    merges[i].doMerge();
+                }
+
+
+                // Set the range boundaries
+                range.setStart(rangeStartNode, rangeStartOffset);
+                range.setEnd(rangeEndNode, rangeEndOffset);
+            }
+
+        },
+
+        createContainer: function(doc) {
+            var el = doc.createElement(this.elementTagName);
+            api.util.extend(el, this.elementProperties);
+            addClass(el, this.cssClass);
+            return el;
+        },
+
+        applyToTextNode: function(textNode) {
+
+
+            var parent = textNode.parentNode;
+            if (parent.childNodes.length == 1 && dom.arrayContains(this.tagNames, parent.tagName.toLowerCase())) {
+                addClass(parent, this.cssClass);
+            } else {
+                var el = this.createContainer(dom.getDocument(textNode));
+                textNode.parentNode.insertBefore(el, textNode);
+                el.appendChild(textNode);
+            }
+
+        },
+
+        isRemovable: function(el) {
+            return el.tagName.toLowerCase() == this.elementTagName
+                    && getSortedClassName(el) == this.elementSortedClassName
+                    && elementHasProps(el, this.elementProperties)
+                    && !elementHasNonClassAttributes(el, this.attrExceptions)
+                    && this.isModifiable(el);
+        },
+
+        undoToTextNode: function(textNode, range, ancestorWithClass) {
+
+            if (!range.containsNode(ancestorWithClass)) {
+                // Split out the portion of the ancestor from which we can remove the CSS class
+                //var parent = ancestorWithClass.parentNode, index = dom.getNodeIndex(ancestorWithClass);
+                var ancestorRange = range.cloneRange();
+                ancestorRange.selectNode(ancestorWithClass);
+
+                if (ancestorRange.isPointInRange(range.endContainer, range.endOffset)/* && isSplitPoint(range.endContainer, range.endOffset)*/) {
+                    splitNodeAt(ancestorWithClass, range.endContainer, range.endOffset, [range]);
+                    range.setEndAfter(ancestorWithClass);
+                }
+                if (ancestorRange.isPointInRange(range.startContainer, range.startOffset)/* && isSplitPoint(range.startContainer, range.startOffset)*/) {
+                    ancestorWithClass = splitNodeAt(ancestorWithClass, range.startContainer, range.startOffset, [range]);
+                }
+            }
+
+            if (this.isRemovable(ancestorWithClass)) {
+                replaceWithOwnChildren(ancestorWithClass);
+            } else {
+                removeClass(ancestorWithClass, this.cssClass);
+            }
+        },
+
+        applyToRange: function(range) {
+            range.splitBoundaries();
+            var textNodes = getEffectiveTextNodes(range);
+
+            if (textNodes.length) {
+                var textNode;
+
+                for (var i = 0, len = textNodes.length; i < len; ++i) {
+                    textNode = textNodes[i];
+
+                    if (!this.isIgnorableWhiteSpaceNode(textNode) && !this.getSelfOrAncestorWithClass(textNode)
+                            && this.isModifiable(textNode)) {
+                        this.applyToTextNode(textNode);
+                    }
+                }
+                range.setStart(textNodes[0], 0);
+                textNode = textNodes[textNodes.length - 1];
+                range.setEnd(textNode, textNode.length);
+                if (this.normalize) {
+                    this.postApply(textNodes, range, false);
+                }
+            }
+        },
+
+        applyToSelection: function(win) {
+
+            win = win || window;
+            var sel = api.getSelection(win);
+
+            var range, ranges = sel.getAllRanges();
+            sel.removeAllRanges();
+            var i = ranges.length;
+            while (i--) {
+                range = ranges[i];
+                this.applyToRange(range);
+                sel.addRange(range);
+            }
+
+        },
+
+        undoToRange: function(range) {
+
+            range.splitBoundaries();
+            var textNodes = getEffectiveTextNodes(range);
+            var textNode, ancestorWithClass;
+            var lastTextNode = textNodes[textNodes.length - 1];
+
+            if (textNodes.length) {
+                for (var i = 0, len = textNodes.length; i < len; ++i) {
+                    textNode = textNodes[i];
+                    ancestorWithClass = this.getSelfOrAncestorWithClass(textNode);
+                    if (ancestorWithClass && this.isModifiable(textNode)) {
+                        this.undoToTextNode(textNode, range, ancestorWithClass);
+                    }
+
+                    // Ensure the range is still valid
+                    range.setStart(textNodes[0], 0);
+                    range.setEnd(lastTextNode, lastTextNode.length);
+                }
+
+
+
+                if (this.normalize) {
+                    this.postApply(textNodes, range, true);
+                }
+            }
+        },
+
+        undoToSelection: function(win) {
+            win = win || window;
+            var sel = api.getSelection(win);
+            var ranges = sel.getAllRanges(), range;
+            sel.removeAllRanges();
+            for (var i = 0, len = ranges.length; i < len; ++i) {
+                range = ranges[i];
+                this.undoToRange(range);
+                sel.addRange(range);
+            }
+        },
+
+        getTextSelectedByRange: function(textNode, range) {
+            var textRange = range.cloneRange();
+            textRange.selectNodeContents(textNode);
+
+            var intersectionRange = textRange.intersection(range);
+            var text = intersectionRange ? intersectionRange.toString() : "";
+            textRange.detach();
+
+            return text;
+        },
+
+        isAppliedToRange: function(range) {
+            if (range.collapsed) {
+                return !!this.getSelfOrAncestorWithClass(range.commonAncestorContainer);
+            } else {
+                var textNodes = range.getNodes( [3] );
+                for (var i = 0, textNode; textNode = textNodes[i++]; ) {
+                    if (!this.isIgnorableWhiteSpaceNode(textNode) && rangeSelectsAnyText(range, textNode)
+                            && this.isModifiable(textNode) && !this.getSelfOrAncestorWithClass(textNode)) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+        },
+
+        isAppliedToSelection: function(win) {
+            win = win || window;
+            var sel = api.getSelection(win);
+            var ranges = sel.getAllRanges();
+            var i = ranges.length;
+            while (i--) {
+                if (!this.isAppliedToRange(ranges[i])) {
+                    return false;
+                }
+            }
+
+            return true;
+        },
+
+        toggleRange: function(range) {
+            if (this.isAppliedToRange(range)) {
+                this.undoToRange(range);
+            } else {
+                this.applyToRange(range);
+            }
+        },
+
+        toggleSelection: function(win) {
+            if (this.isAppliedToSelection(win)) {
+                this.undoToSelection(win);
+            } else {
+                this.applyToSelection(win);
+            }
+        },
+
+        detach: function() {}
+    };
+
+    function createCssClassApplier(cssClass, options, tagNames) {
+        return new CssClassApplier(cssClass, options, tagNames);
+    }
+
+    CssClassApplier.util = {
+        hasClass: hasClass,
+        addClass: addClass,
+        removeClass: removeClass,
+        hasSameClasses: haveSameClasses,
+        replaceWithOwnChildren: replaceWithOwnChildren,
+        elementsHaveSameNonClassAttributes: elementsHaveSameNonClassAttributes,
+        elementHasNonClassAttributes: elementHasNonClassAttributes,
+        splitNodeAt: splitNodeAt,
+        isEditableElement: isEditableElement,
+        isEditingHost: isEditingHost,
+        isEditable: isEditable
+    };
+
+    api.CssClassApplier = CssClassApplier;
+    api.createCssClassApplier = createCssClassApplier;
+});
+
+/**
+ * @license Selection save and restore module for Rangy.
+ * Saves and restores user selections using marker invisible elements in the DOM.
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("SaveRestore", function(api, module) {
+    api.requireModules( ["DomUtil", "DomRange", "WrappedRange"] );
+
+    var dom = api.dom;
+
+    var markerTextChar = "\ufeff";
+
+    function gEBI(id, doc) {
+        return (doc || document).getElementById(id);
+    }
+
+    function insertRangeBoundaryMarker(range, atStart) {
+        var markerId = "selectionBoundary_" + (+new Date()) + "_" + ("" + Math.random()).slice(2);
+        var markerEl;
+        var doc = dom.getDocument(range.startContainer);
+
+        // Clone the Range and collapse to the appropriate boundary point
+        var boundaryRange = range.cloneRange();
+        boundaryRange.collapse(atStart);
+
+        // Create the marker element containing a single invisible character using DOM methods and insert it
+        markerEl = doc.createElement("span");
+        markerEl.id = markerId;
+        markerEl.style.lineHeight = "0";
+        markerEl.style.display = "none";
+        markerEl.className = "rangySelectionBoundary";
+        markerEl.appendChild(doc.createTextNode(markerTextChar));
+
+        boundaryRange.insertNode(markerEl);
+        boundaryRange.detach();
+        return markerEl;
+    }
+
+    function setRangeBoundary(doc, range, markerId, atStart) {
+        var markerEl = gEBI(markerId, doc);
+        if (markerEl) {
+            range[atStart ? "setStartBefore" : "setEndBefore"](markerEl);
+            markerEl.parentNode.removeChild(markerEl);
+        } else {
+            module.warn("Marker element has been removed. Cannot restore selection.");
+        }
+    }
+
+    function compareRanges(r1, r2) {
+        return r2.compareBoundaryPoints(r1.START_TO_START, r1);
+    }
+
+    function saveSelection(win) {
+        win = win || window;
+        var doc = win.document;
+        if (!api.isSelectionValid(win)) {
+            module.warn("Cannot save selection. This usually happens when the selection is collapsed and the selection document has lost focus.");
+            return;
+        }
+        var sel = api.getSelection(win);
+        var ranges = sel.getAllRanges();
+        var rangeInfos = [], startEl, endEl, range;
+
+        // Order the ranges by position within the DOM, latest first
+        ranges.sort(compareRanges);
+
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            range = ranges[i];
+            if (range.collapsed) {
+                endEl = insertRangeBoundaryMarker(range, false);
+                rangeInfos.push({
+                    markerId: endEl.id,
+                    collapsed: true
+                });
+            } else {
+                endEl = insertRangeBoundaryMarker(range, false);
+                startEl = insertRangeBoundaryMarker(range, true);
+
+                rangeInfos[i] = {
+                    startMarkerId: startEl.id,
+                    endMarkerId: endEl.id,
+                    collapsed: false,
+                    backwards: ranges.length == 1 && sel.isBackwards()
+                };
+            }
+        }
+
+        // Now that all the markers are in place and DOM manipulation over, adjust each range's boundaries to lie
+        // between its markers
+        for (i = len - 1; i >= 0; --i) {
+            range = ranges[i];
+            if (range.collapsed) {
+                range.collapseBefore(gEBI(rangeInfos[i].markerId, doc));
+            } else {
+                range.setEndBefore(gEBI(rangeInfos[i].endMarkerId, doc));
+                range.setStartAfter(gEBI(rangeInfos[i].startMarkerId, doc));
+            }
+        }
+
+        // Ensure current selection is unaffected
+        sel.setRanges(ranges);
+        return {
+            win: win,
+            doc: doc,
+            rangeInfos: rangeInfos,
+            restored: false
+        };
+    }
+
+    function restoreSelection(savedSelection, preserveDirection) {
+        if (!savedSelection.restored) {
+            var rangeInfos = savedSelection.rangeInfos;
+            var sel = api.getSelection(savedSelection.win);
+            var ranges = [];
+
+            // Ranges are in reverse order of appearance in the DOM. We want to restore earliest first to avoid
+            // normalization affecting previously restored ranges.
+            for (var len = rangeInfos.length, i = len - 1, rangeInfo, range; i >= 0; --i) {
+                rangeInfo = rangeInfos[i];
+                range = api.createRange(savedSelection.doc);
+                if (rangeInfo.collapsed) {
+                    var markerEl = gEBI(rangeInfo.markerId, savedSelection.doc);
+                    if (markerEl) {
+                        markerEl.style.display = "inline";
+                        var previousNode = markerEl.previousSibling;
+
+                        // Workaround for issue 17
+                        if (previousNode && previousNode.nodeType == 3) {
+                            markerEl.parentNode.removeChild(markerEl);
+                            range.collapseToPoint(previousNode, previousNode.length);
+                        } else {
+                            range.collapseBefore(markerEl);
+                            markerEl.parentNode.removeChild(markerEl);
+                        }
+                    } else {
+                        module.warn("Marker element has been removed. Cannot restore selection.");
+                    }
+                } else {
+                    setRangeBoundary(savedSelection.doc, range, rangeInfo.startMarkerId, true);
+                    setRangeBoundary(savedSelection.doc, range, rangeInfo.endMarkerId, false);
+                }
+
+                // Normalizing range boundaries is only viable if the selection contains only one range. For example,
+                // if the selection contained two ranges that were both contained within the same single text node,
+                // both would alter the same text node when restoring and break the other range.
+                if (len == 1) {
+                    range.normalizeBoundaries();
+                }
+                ranges[i] = range;
+            }
+            if (len == 1 && preserveDirection && api.features.selectionHasExtend && rangeInfos[0].backwards) {
+                sel.removeAllRanges();
+                sel.addRange(ranges[0], true);
+            } else {
+                sel.setRanges(ranges);
+            }
+
+            savedSelection.restored = true;
+        }
+    }
+
+    function removeMarkerElement(doc, markerId) {
+        var markerEl = gEBI(markerId, doc);
+        if (markerEl) {
+            markerEl.parentNode.removeChild(markerEl);
+        }
+    }
+
+    function removeMarkers(savedSelection) {
+        var rangeInfos = savedSelection.rangeInfos;
+        for (var i = 0, len = rangeInfos.length, rangeInfo; i < len; ++i) {
+            rangeInfo = rangeInfos[i];
+            if (rangeInfo.collapsed) {
+                removeMarkerElement(savedSelection.doc, rangeInfo.markerId);
+            } else {
+                removeMarkerElement(savedSelection.doc, rangeInfo.startMarkerId);
+                removeMarkerElement(savedSelection.doc, rangeInfo.endMarkerId);
+            }
+        }
+    }
+
+    api.saveSelection = saveSelection;
+    api.restoreSelection = restoreSelection;
+    api.removeMarkerElement = removeMarkerElement;
+    api.removeMarkers = removeMarkers;
+});
+
+/**
+ * @license Serializer module for Rangy.
+ * Serializes Ranges and Selections. An example use would be to store a user's selection on a particular page in a
+ * cookie or local storage and restore it on the user's next visit to the same page.
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("Serializer", function(api, module) {
+    api.requireModules( ["WrappedSelection", "WrappedRange"] );
+    var UNDEF = "undefined";
+
+    // encodeURIComponent and decodeURIComponent are required for cookie handling
+    if (typeof encodeURIComponent == UNDEF || typeof decodeURIComponent == UNDEF) {
+        module.fail("Global object is missing encodeURIComponent and/or decodeURIComponent method");
+    }
+
+    // Checksum for checking whether range can be serialized
+    var crc32 = (function() {
+        function utf8encode(str) {
+            var utf8CharCodes = [];
+
+            for (var i = 0, len = str.length, c; i < len; ++i) {
+                c = str.charCodeAt(i);
+                if (c < 128) {
+                    utf8CharCodes.push(c);
+                } else if (c < 2048) {
+                    utf8CharCodes.push((c >> 6) | 192, (c & 63) | 128);
+                } else {
+                    utf8CharCodes.push((c >> 12) | 224, ((c >> 6) & 63) | 128, (c & 63) | 128);
+                }
+            }
+            return utf8CharCodes;
+        }
+
+        var cachedCrcTable = null;
+
+        function buildCRCTable() {
+            var table = [];
+            for (var i = 0, j, crc; i < 256; ++i) {
+                crc = i;
+                j = 8;
+                while (j--) {
+                    if ((crc & 1) == 1) {
+                        crc = (crc >>> 1) ^ 0xEDB88320;
+                    } else {
+                        crc >>>= 1;
+                    }
+                }
+                table[i] = crc >>> 0;
+            }
+            return table;
+        }
+
+        function getCrcTable() {
+            if (!cachedCrcTable) {
+                cachedCrcTable = buildCRCTable();
+            }
+            return cachedCrcTable;
+        }
+
+        return function(str) {
+            var utf8CharCodes = utf8encode(str), crc = -1, crcTable = getCrcTable();
+            for (var i = 0, len = utf8CharCodes.length, y; i < len; ++i) {
+                y = (crc ^ utf8CharCodes[i]) & 0xFF;
+                crc = (crc >>> 8) ^ crcTable[y];
+            }
+            return (crc ^ -1) >>> 0;
+        };
+    })();
+
+    var dom = api.dom;
+
+    function escapeTextForHtml(str) {
+        return str.replace(/</g, "&lt;").replace(/>/g, "&gt;");
+    }
+
+    function nodeToInfoString(node, infoParts) {
+        infoParts = infoParts || [];
+        var nodeType = node.nodeType, children = node.childNodes, childCount = children.length;
+        var nodeInfo = [nodeType, node.nodeName, childCount].join(":");
+        var start = "", end = "";
+        switch (nodeType) {
+            case 3: // Text node
+                start = escapeTextForHtml(node.nodeValue);
+                break;
+            case 8: // Comment
+                start = "<!--" + escapeTextForHtml(node.nodeValue) + "-->";
+                break;
+            default:
+                start = "<" + nodeInfo + ">";
+                end = "</>";
+                break;
+        }
+        if (start) {
+            infoParts.push(start);
+        }
+        for (var i = 0; i < childCount; ++i) {
+            nodeToInfoString(children[i], infoParts);
+        }
+        if (end) {
+            infoParts.push(end);
+        }
+        return infoParts;
+    }
+
+    // Creates a string representation of the specified element's contents that is similar to innerHTML but omits all
+    // attributes and comments and includes child node counts. This is done instead of using innerHTML to work around
+    // IE <= 8's policy of including element properties in attributes, which ruins things by changing an element's
+    // innerHTML whenever the user changes an input within the element.
+    function getElementChecksum(el) {
+        var info = nodeToInfoString(el).join("");
+        return crc32(info).toString(16);
+    }
+
+    function serializePosition(node, offset, rootNode) {
+        var pathBits = [], n = node;
+        rootNode = rootNode || dom.getDocument(node).documentElement;
+        while (n && n != rootNode) {
+            pathBits.push(dom.getNodeIndex(n, true));
+            n = n.parentNode;
+        }
+        return pathBits.join("/") + ":" + offset;
+    }
+
+    function deserializePosition(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var bits = serialized.split(":");
+        var node = rootNode;
+        var nodeIndices = bits[0] ? bits[0].split("/") : [], i = nodeIndices.length, nodeIndex;
+
+        while (i--) {
+            nodeIndex = parseInt(nodeIndices[i], 10);
+            if (nodeIndex < node.childNodes.length) {
+                node = node.childNodes[parseInt(nodeIndices[i], 10)];
+            } else {
+                throw module.createError("deserializePosition failed: node " + dom.inspectNode(node) +
+                        " has no child with index " + nodeIndex + ", " + i);
+            }
+        }
+
+        return new dom.DomPosition(node, parseInt(bits[1], 10));
+    }
+
+    function serializeRange(range, omitChecksum, rootNode) {
+        rootNode = rootNode || api.DomRange.getRangeDocument(range).documentElement;
+        if (!dom.isAncestorOf(rootNode, range.commonAncestorContainer, true)) {
+            throw new Error("serializeRange: range is not wholly contained within specified root node");
+        }
+        var serialized = serializePosition(range.startContainer, range.startOffset, rootNode) + "," +
+            serializePosition(range.endContainer, range.endOffset, rootNode);
+        if (!omitChecksum) {
+            serialized += "{" + getElementChecksum(rootNode) + "}";
+        }
+        return serialized;
+    }
+
+    function deserializeRange(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var result = /^([^,]+),([^,\{]+)({([^}]+)})?$/.exec(serialized);
+        var checksum = result[4], rootNodeChecksum = getElementChecksum(rootNode);
+        if (checksum && checksum !== getElementChecksum(rootNode)) {
+            throw new Error("deserializeRange: checksums of serialized range root node (" + checksum +
+                    ") and target root node (" + rootNodeChecksum + ") do not match");
+        }
+        var start = deserializePosition(result[1], rootNode, doc), end = deserializePosition(result[2], rootNode, doc);
+        var range = api.createRange(doc);
+        range.setStart(start.node, start.offset);
+        range.setEnd(end.node, end.offset);
+        return range;
+    }
+
+    function canDeserializeRange(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var result = /^([^,]+),([^,]+)({([^}]+)})?$/.exec(serialized);
+        var checksum = result[3];
+        return !checksum || checksum === getElementChecksum(rootNode);
+    }
+
+    function serializeSelection(selection, omitChecksum, rootNode) {
+        selection = selection || api.getSelection();
+        var ranges = selection.getAllRanges(), serializedRanges = [];
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            serializedRanges[i] = serializeRange(ranges[i], omitChecksum, rootNode);
+        }
+        return serializedRanges.join("|");
+    }
+
+    function deserializeSelection(serialized, rootNode, win) {
+        if (rootNode) {
+            win = win || dom.getWindow(rootNode);
+        } else {
+            win = win || window;
+            rootNode = win.document.documentElement;
+        }
+        var serializedRanges = serialized.split("|");
+        var sel = api.getSelection(win);
+        var ranges = [];
+
+        for (var i = 0, len = serializedRanges.length; i < len; ++i) {
+            ranges[i] = deserializeRange(serializedRanges[i], rootNode, win.document);
+        }
+        sel.setRanges(ranges);
+
+        return sel;
+    }
+
+    function canDeserializeSelection(serialized, rootNode, win) {
+        var doc;
+        if (rootNode) {
+            doc = win ? win.document : dom.getDocument(rootNode);
+        } else {
+            win = win || window;
+            rootNode = win.document.documentElement;
+        }
+        var serializedRanges = serialized.split("|");
+
+        for (var i = 0, len = serializedRanges.length; i < len; ++i) {
+            if (!canDeserializeRange(serializedRanges[i], rootNode, doc)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+
+    var cookieName = "rangySerializedSelection";
+
+    function getSerializedSelectionFromCookie(cookie) {
+        var parts = cookie.split(/[;,]/);
+        for (var i = 0, len = parts.length, nameVal, val; i < len; ++i) {
+            nameVal = parts[i].split("=");
+            if (nameVal[0].replace(/^\s+/, "") == cookieName) {
+                val = nameVal[1];
+                if (val) {
+                    return decodeURIComponent(val.replace(/\s+$/, ""));
+                }
+            }
+        }
+        return null;
+    }
+
+    function restoreSelectionFromCookie(win) {
+        win = win || window;
+        var serialized = getSerializedSelectionFromCookie(win.document.cookie);
+        if (serialized) {
+            deserializeSelection(serialized, win.doc)
+        }
+    }
+
+    function saveSelectionCookie(win, props) {
+        win = win || window;
+        props = (typeof props == "object") ? props : {};
+        var expires = props.expires ? ";expires=" + props.expires.toUTCString() : "";
+        var path = props.path ? ";path=" + props.path : "";
+        var domain = props.domain ? ";domain=" + props.domain : "";
+        var secure = props.secure ? ";secure" : "";
+        var serialized = serializeSelection(api.getSelection(win));
+        win.document.cookie = encodeURIComponent(cookieName) + "=" + encodeURIComponent(serialized) + expires + path + domain + secure;
+    }
+
+    api.serializePosition = serializePosition;
+    api.deserializePosition = deserializePosition;
+
+    api.serializeRange = serializeRange;
+    api.deserializeRange = deserializeRange;
+    api.canDeserializeRange = canDeserializeRange;
+
+    api.serializeSelection = serializeSelection;
+    api.deserializeSelection = deserializeSelection;
+    api.canDeserializeSelection = canDeserializeSelection;
+
+    api.restoreSelectionFromCookie = restoreSelectionFromCookie;
+    api.saveSelectionCookie = saveSelectionCookie;
+
+    api.getElementChecksum = getElementChecksum;
+});
+YUI.add('moodle-editor_atto-rangy', function (Y, NAME) {
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+if (!rangy.initialized) {
+    rangy.init();
+}
+
+
+}, '@VERSION@', {"requires": []});
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy-min.js b/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy-min.js
new file mode 100644
index 00000000000..f900c4eb35f
--- /dev/null
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy-min.js
@@ -0,0 +1,10 @@
+window.rangy=function(){function u(n,r){var i=typeof n[r];return i==t||i==e&&!!n[r]||i=="unknown"}function a(t,n){return typeof t[n]==e&&!!t[n]}function f(e,t){return typeof e[t]!=n}function l(e){return function(t,n){var r=n.length;while(r--)if(!e(t,n[r]))return!1;return!0}}function d(e){return e&&c(e,o)&&p(e,s)}function m(e){window.alert("Rangy not supported in your browser. Reason: "+e),v.initialized=!0,v.supported=!1}function g(e){var t="Rangy warning: "+e;v.config.alertOnWarn?window.alert(t):typeof window.console!=n&&typeof window.console.log!=n&&window.console.log(t)}function w(){if(v.initialized)return;var e,t=!1,n=!1;u(document,"createRange")&&(e=document.createRange(),c(e,i)&&p(e,r)&&(t=!0),e.detach());var s=a(document,"body")?document.body:document.getElementsByTagName("body")[0];s&&u(s,"createTextRange")&&(e=s.createTextRange(),d(e)&&(n=!0)),!t&&!n&&m("Neither Range nor TextRange are implemented"),v.initialized=!0,v.features={implementsDomRange:t,implementsTextRange:n};var o=b.concat(y);for(var f=0,l=o.length;f<l;++f)try{o[f](v)}catch(h){a(window,"console")&&u(window.console,"log")&&window.console.log("Init listener threw an exception. Continuing.",h)}}function S(e){e=e||window,w();for(var t=0,n=E.length;t<n;++t)E[t](e)}function x(e){this.name=e,this.initialized=!1,this.supported=!1}var e="object",t="function",n="undefined",r=["startContainer","startOffset","endContainer","endOffset","collapsed","commonAncestorContainer","START_TO_START","START_TO_END","END_TO_START","END_TO_END"],i=["setStart","setStartBefore","setStartAfter","setEnd","setEndBefore","setEndAfter","collapse","selectNode","selectNodeContents","compareBoundaryPoints","deleteContents","extractContents","cloneContents","insertNode","surroundContents","cloneRange","toString","detach"],s=["boundingHeight","boundingLeft","boundingTop","boundingWidth","htmlText","text"],o=["collapse","compareEndPoints","duplicate","getBookmark","moveToBookmark","moveToElementText","parentElement","pasteHTML","select","setEndPoint","getBoundingClientRect"],c=l(u),h=l(a),p=l(f),v={version:"1.2.3",initialized:!1,supported:!0,util:{isHostMethod:u,isHostObject:a,isHostProperty:f,areHostMethods:c,areHostObjects:h,areHostProperties:p,isTextRange:d},features:{},modules:{},config:{alertOnWarn:!1,preferTextRange:!1}};v.fail=m,v.warn=g,{}.hasOwnProperty?v.util.extend=function(e,t){for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n])}:m("hasOwnProperty not supported");var y=[],b=[];v.init=w,v.addInitListener=function(e){v.initialized?e(v):y.push(e)};var E=[];v.addCreateMissingNativeApiListener=function(e){E.push(e)},v.createMissingNativeApi=S,x.prototype.fail=function(e){throw this.initialized=!0,this.supported=!1,new Error("Module '"+this.name+"' failed to load: "+e)},x.prototype.warn=function(e){v.warn("Module "+this.name+": "+e)},x.prototype.createError=function(e){return new Error("Error in Rangy "+this.name+" module: "+e)},v.createModule=function(e,t){var n=new x(e);v.modules[e]=n,b.push(function(e){t(e,n),n.initialized=!0,n.supported=!0})},v.requireModules=function(e){for(var t=0,n=e.length,r,i;t<n;++t){i=e[t],r=v.modules[i];if(!r||!(r instanceof x))throw new Error("Module '"+i+"' not found");if(!r.supported)throw new Error("Module '"+i+"' not supported")}};var T=!1,N=function(e){T||(T=!0,v.initialized||w())};if(typeof window==n){m("No window found");return}if(typeof document==n){m("No document found");return}return u(document,"addEventListener")&&document.addEventListener("DOMContentLoaded",N,!1),u(window,"addEventListener")?window.addEventListener("load",N,!1):u(window,"attachEvent")?window.attachEvent("onload",N):m("Window does not have required addEventListener or attachEvent method"),v}(),rangy.createModule("DomUtil",function(e,t){function u(e){var t;return typeof e.namespaceURI==n||(t=e.namespaceURI)===null||t=="http://www.w3.org/1999/xhtml"}function a(e){var t=e.parentNode;return t.nodeType==1?t:null}function f(e){var t=0;while(e=e.previousSibling)t++;return t}function l(e){var t;return d(e)?e.length:(t=e.childNodes)?t.length:0}function c(e,t){var n=[],r;for(r=e;r;r=r.parentNode)n.push(r);for(r=t;r;r=r.parentNode)if(o(n,r))return r;return null}function h(e,t,n){var r=n?t:t.parentNode;while(r){if(r===e)return!0;r=r.parentNode}return!1}function p(e,t,n){var r,i=n?e:e.parentNode;while(i){r=i.parentNode;if(r===t)return i;i=r}return null}function d(e){var t=e.nodeType;return t==3||t==4||t==8}function v(e,t){var n=t.nextSibling,r=t.parentNode;return n?r.insertBefore(e,n):r.appendChild(e),e}function m(e,t){var n=e.cloneNode(!1);return n.deleteData(0,t),e.deleteData(t,e.length-t),v(n,e),n}function g(e){if(e.nodeType==9)return e;if(typeof e.ownerDocument!=n)return e.ownerDocument;if(typeof e.document!=n)return e.document;if(e.parentNode)return g(e.parentNode);throw new Error("getDocument: no document found for node")}function y(e){var t=g(e);if(typeof t.defaultView!=n)return t.defaultView;if(typeof t.parentWindow!=n)return t.parentWindow;throw new Error("Cannot get a window object for node")}function b(e){if(typeof e.contentDocument!=n)return e.contentDocument;if(typeof e.contentWindow!=n)return e.contentWindow.document;throw new Error("getIframeWindow: No Document object found for iframe element")}function w(e){if(typeof e.contentWindow!=n)return e.contentWindow;if(typeof e.contentDocument!=n)return e.contentDocument.defaultView;throw new Error("getIframeWindow: No Window object found for iframe element")}function E(e){return r.isHostObject(e,"body")?e.body:e.getElementsByTagName("body")[0]}function S(e){var t;while(t=e.parentNode)e=t;return e}function x(e,t,n,r){var i,s,o,u,a;if(e==n)return t===r?0:t<r?-1:1;if(i=p(n,e,!0))return t<=f(i)?-1:1;if(i=p(e,n,!0))return f(i)<r?-1:1;s=c(e,n),o=e===s?s:p(e,s,!0),u=n===s?s:p(n,s,!0);if(o===u)throw new Error("comparePoints got to case 4 and childA and childB are the same!");a=s.firstChild;while(a){if(a===o)return-1;if(a===u)return 1;a=a.nextSibling}throw new Error("Should not be here!")}function T(e){var t=g
+(e).createDocumentFragment(),n;while(n=e.firstChild)t.appendChild(n);return t}function N(e){if(!e)return"[No node]";if(d(e))return'"'+e.data+'"';if(e.nodeType==1){var t=e.id?' id="'+e.id+'"':"";return"<"+e.nodeName+t+">["+e.childNodes.length+"]"}return e.nodeName}function C(e){this.root=e,this._next=e}function k(e){return new C(e)}function L(e,t){this.node=e,this.offset=t}function A(e){this.code=this[e],this.codeName=e,this.message="DOMException: "+this.codeName}var n="undefined",r=e.util;r.areHostMethods(document,["createDocumentFragment","createElement","createTextNode"])||t.fail("document missing a Node creation method"),r.isHostMethod(document,"getElementsByTagName")||t.fail("document missing getElementsByTagName method");var i=document.createElement("div");r.areHostMethods(i,["insertBefore","appendChild","cloneNode"]||!r.areHostObjects(i,["previousSibling","nextSibling","childNodes","parentNode"]))||t.fail("Incomplete Element implementation"),r.isHostProperty(i,"innerHTML")||t.fail("Element is missing innerHTML property");var s=document.createTextNode("test");r.areHostMethods(s,["splitText","deleteData","insertData","appendData","cloneNode"]||!r.areHostObjects(i,["previousSibling","nextSibling","childNodes","parentNode"])||!r.areHostProperties(s,["data"]))||t.fail("Incomplete Text Node implementation");var o=function(e,t){var n=e.length;while(n--)if(e[n]===t)return!0;return!1};C.prototype={_current:null,hasNext:function(){return!!this._next},next:function(){var e=this._current=this._next,t,n;if(this._current){t=e.firstChild;if(t)this._next=t;else{n=null;while(e!==this.root&&!(n=e.nextSibling))e=e.parentNode;this._next=n}}return this._current},detach:function(){this._current=this._next=this.root=null}},L.prototype={equals:function(e){return this.node===e.node&this.offset==e.offset},inspect:function(){return"[DomPosition("+N(this.node)+":"+this.offset+")]"}},A.prototype={INDEX_SIZE_ERR:1,HIERARCHY_REQUEST_ERR:3,WRONG_DOCUMENT_ERR:4,NO_MODIFICATION_ALLOWED_ERR:7,NOT_FOUND_ERR:8,NOT_SUPPORTED_ERR:9,INVALID_STATE_ERR:11},A.prototype.toString=function(){return this.message},e.dom={arrayContains:o,isHtmlNamespace:u,parentElement:a,getNodeIndex:f,getNodeLength:l,getCommonAncestor:c,isAncestorOf:h,getClosestAncestorIn:p,isCharacterDataNode:d,insertAfter:v,splitDataNode:m,getDocument:g,getWindow:y,getIframeWindow:w,getIframeDocument:b,getBody:E,getRootContainer:S,comparePoints:x,inspectNode:N,fragmentFromNodeChildren:T,createIterator:k,DomPosition:L},e.DOMException=A}),rangy.createModule("DomRange",function(e,t){function s(e,t){return e.nodeType!=3&&(n.isAncestorOf(e,t.startContainer,!0)||n.isAncestorOf(e,t.endContainer,!0))}function o(e){return n.getDocument(e.startContainer)}function u(e,t,n){var r=e._listeners[t];if(r)for(var i=0,s=r.length;i<s;++i)r[i].call(e,{target:e,args:n})}function a(e){return new r(e.parentNode,n.getNodeIndex(e))}function f(e){return new r(e.parentNode,n.getNodeIndex(e)+1)}function l(e,t,r){var i=e.nodeType==11?e.firstChild:e;return n.isCharacterDataNode(t)?r==t.length?n.insertAfter(e,t):t.parentNode.insertBefore(e,r==0?t:n.splitDataNode(t,r)):r>=t.childNodes.length?t.appendChild(e):t.insertBefore(e,t.childNodes[r]),i}function c(e){var t;for(var n,r=o(e.range).createDocumentFragment(),s;n=e.next();){t=e.isPartiallySelectedSubtree(),n=n.cloneNode(!t),t&&(s=e.getSubtreeIterator(),n.appendChild(c(s)),s.detach(!0));if(n.nodeType==10)throw new i("HIERARCHY_REQUEST_ERR");r.appendChild(n)}return r}function h(e,t,r){var i,s;r=r||{stop:!1};for(var o,u;o=e.next();)if(e.isPartiallySelectedSubtree()){if(t(o)===!1){r.stop=!0;return}u=e.getSubtreeIterator(),h(u,t,r),u.detach(!0);if(r.stop)return}else{i=n.createIterator(o);while(s=i.next())if(t(s)===!1){r.stop=!0;return}}}function p(e){var t;while(e.next())e.isPartiallySelectedSubtree()?(t=e.getSubtreeIterator(),p(t),t.detach(!0)):e.remove()}function d(e){for(var t,n=o(e.range).createDocumentFragment(),r;t=e.next();){e.isPartiallySelectedSubtree()?(t=t.cloneNode(!1),r=e.getSubtreeIterator(),t.appendChild(d(r)),r.detach(!0)):e.remove();if(t.nodeType==10)throw new i("HIERARCHY_REQUEST_ERR");n.appendChild(t)}return n}function v(e,t,n){var r=!!t&&!!t.length,i,s=!!n;r&&(i=new RegExp("^("+t.join("|")+")$"));var o=[];return h(new g(e,!1),function(e){(!r||i.test(e.nodeType))&&(!s||n(e))&&o.push(e)}),o}function m(e){var t=typeof e.getName=="undefined"?"Range":e.getName();return"["+t+"("+n.inspectNode(e.startContainer)+":"+e.startOffset+", "+n.inspectNode(e.endContainer)+":"+e.endOffset+")]"}function g(e,t){this.range=e,this.clonePartiallySelectedTextNodes=t;if(!e.collapsed){this.sc=e.startContainer,this.so=e.startOffset,this.ec=e.endContainer,this.eo=e.endOffset;var r=e.commonAncestorContainer;this.sc===this.ec&&n.isCharacterDataNode(this.sc)?(this.isSingleCharacterDataNode=!0,this._first=this._last=this._next=this.sc):(this._first=this._next=this.sc===r&&!n.isCharacterDataNode(this.sc)?this.sc.childNodes[this.so]:n.getClosestAncestorIn(this.sc,r,!0),this._last=this.ec===r&&!n.isCharacterDataNode(this.ec)?this.ec.childNodes[this.eo-1]:n.getClosestAncestorIn(this.ec,r,!0))}}function y(e){this.code=this[e],this.codeName=e,this.message="RangeException: "+this.codeName}function b(e,t,n){this.nodes=v(e,t,n),this._next=this.nodes[0],this._position=0}function N(e){return function(t,r){var i,s=r?t:t.parentNode;while(s){i=s.nodeType;if(n.arrayContains(e,i))return s;s=s.parentNode}return null}}function O(e,t){if(A(e,t))throw new y("INVALID_NODE_TYPE_ERR")}function M(e){if(!e.startContainer)throw new i("INVALID_STATE_ERR")}function _(e,t){if(!n.arrayContains(t,e.nodeType))throw new y("INVALID_NODE_TYPE_ERR")}function D(e,t){if(t<0||t>(n.isCharacterDataNode(e)?e.length:e.childNodes.length))throw new i("INDEX_SIZE_ERR")}function P(e,t){if(k(e,!0)!==k(t,!0))throw new i("WRONG_DOCUMENT_ERR")}function H(e){if(L(e,!0))throw new i("NO_MODIFICATION_ALLOWED_ERR")}function B(e,t){if(!e)throw new i(t)}function j(e){return!n.arrayContains(E,e.nodeType)&&!k(e,!0)}
+function F(e,t){return t<=(n.isCharacterDataNode(e)?e.length:e.childNodes.length)}function I(e){return!!e.startContainer&&!!e.endContainer&&!j(e.startContainer)&&!j(e.endContainer)&&F(e.startContainer,e.startOffset)&&F(e.endContainer,e.endOffset)}function q(e){M(e);if(!I(e))throw new Error("Range error: Range is no longer valid after DOM mutation ("+e.inspect()+")")}function et(){}function tt(e){e.START_TO_START=V,e.START_TO_END=$,e.END_TO_END=J,e.END_TO_START=K,e.NODE_BEFORE=Q,e.NODE_AFTER=G,e.NODE_BEFORE_AND_AFTER=Y,e.NODE_INSIDE=Z}function nt(e){tt(e),tt(e.prototype)}function rt(e,t){return function(){q(this);var r=this.startContainer,i=this.startOffset,s=this.commonAncestorContainer,o=new g(this,!0),u,a;r!==s&&(u=n.getClosestAncestorIn(r,s,!0),a=f(u),r=a.node,i=a.offset),h(o,H),o.reset();var l=e(o);return o.detach(),t(this,r,i,r,i),l}}function it(t,r,i){function o(e,t){return function(n){M(this),_(n,w),_(C(n),E);var r=(e?a:f)(n);(t?u:l)(this,r.node,r.offset)}}function u(e,t,i){var s=e.endContainer,o=e.endOffset;if(t!==e.startContainer||i!==e.startOffset){if(C(t)!=C(s)||n.comparePoints(t,i,s,o)==1)s=t,o=i;r(e,t,i,s,o)}}function l(e,t,i){var s=e.startContainer,o=e.startOffset;if(t!==e.endContainer||i!==e.endOffset){if(C(t)!=C(s)||n.comparePoints(t,i,s,o)==-1)s=t,o=i;r(e,s,o,t,i)}}function c(e,t,n){(t!==e.startContainer||n!==e.startOffset||t!==e.endContainer||n!==e.endOffset)&&r(e,t,n,t,n)}t.prototype=new et,e.util.extend(t.prototype,{setStart:function(e,t){M(this),O(e,!0),D(e,t),u(this,e,t)},setEnd:function(e,t){M(this),O(e,!0),D(e,t),l(this,e,t)},setStartBefore:o(!0,!0),setStartAfter:o(!1,!0),setEndBefore:o(!0,!1),setEndAfter:o(!1,!1),collapse:function(e){q(this),e?r(this,this.startContainer,this.startOffset,this.startContainer,this.startOffset):r(this,this.endContainer,this.endOffset,this.endContainer,this.endOffset)},selectNodeContents:function(e){M(this),O(e,!0),r(this,e,0,e,n.getNodeLength(e))},selectNode:function(e){M(this),O(e,!1),_(e,w);var t=a(e),n=f(e);r(this,t.node,t.offset,n.node,n.offset)},extractContents:rt(d,r),deleteContents:rt(p,r),canSurroundContents:function(){q(this),H(this.startContainer),H(this.endContainer);var e=new g(this,!0),t=e._first&&s(e._first,this)||e._last&&s(e._last,this);return e.detach(),!t},detach:function(){i(this)},splitBoundaries:function(){q(this);var e=this.startContainer,t=this.startOffset,i=this.endContainer,s=this.endOffset,o=e===i;n.isCharacterDataNode(i)&&s>0&&s<i.length&&n.splitDataNode(i,s),n.isCharacterDataNode(e)&&t>0&&t<e.length&&(e=n.splitDataNode(e,t),o?(s-=t,i=e):i==e.parentNode&&s>=n.getNodeIndex(e)&&s++,t=0),r(this,e,t,i,s)},normalizeBoundaries:function(){q(this);var e=this.startContainer,t=this.startOffset,i=this.endContainer,s=this.endOffset,o=function(e){var t=e.nextSibling;t&&t.nodeType==e.nodeType&&(i=e,s=e.length,e.appendData(t.data),t.parentNode.removeChild(t))},u=function(r){var o=r.previousSibling;if(o&&o.nodeType==r.nodeType){e=r;var u=r.length;t=o.length,r.insertData(0,o.data),o.parentNode.removeChild(o);if(e==i)s+=t,i=e;else if(i==r.parentNode){var a=n.getNodeIndex(r);s==a?(i=r,s=u):s>a&&s--}}},a=!0;if(n.isCharacterDataNode(i))i.length==s&&o(i);else{if(s>0){var f=i.childNodes[s-1];f&&n.isCharacterDataNode(f)&&o(f)}a=!this.collapsed}if(a){if(n.isCharacterDataNode(e))t==0&&u(e);else if(t<e.childNodes.length){var l=e.childNodes[t];l&&n.isCharacterDataNode(l)&&u(l)}}else e=i,t=s;r(this,e,t,i,s)},collapseToPoint:function(e,t){M(this),O(e,!0),D(e,t),c(this,e,t)}}),nt(t)}function st(e){e.collapsed=e.startContainer===e.endContainer&&e.startOffset===e.endOffset,e.commonAncestorContainer=e.collapsed?e.startContainer:n.getCommonAncestor(e.startContainer,e.endContainer)}function ot(e,t,n,r,i){var s=e.startContainer!==t||e.startOffset!==n,o=e.endContainer!==r||e.endOffset!==i;e.startContainer=t,e.startOffset=n,e.endContainer=r,e.endOffset=i,st(e),u(e,"boundarychange",{startMoved:s,endMoved:o})}function ut(e){M(e),e.startContainer=e.startOffset=e.endContainer=e.endOffset=null,e.collapsed=e.commonAncestorContainer=null,u(e,"detach",null),e._listeners=null}function at(e){this.startContainer=e,this.startOffset=0,this.endContainer=e,this.endOffset=0,this._listeners={boundarychange:[],detach:[]},st(this)}e.requireModules(["DomUtil"]);var n=e.dom,r=n.DomPosition,i=e.DOMException;g.prototype={_current:null,_next:null,_first:null,_last:null,isSingleCharacterDataNode:!1,reset:function(){this._current=null,this._next=this._first},hasNext:function(){return!!this._next},next:function(){var e=this._current=this._next;return e&&(this._next=e!==this._last?e.nextSibling:null,n.isCharacterDataNode(e)&&this.clonePartiallySelectedTextNodes&&(e===this.ec&&(e=e.cloneNode(!0)).deleteData(this.eo,e.length-this.eo),this._current===this.sc&&(e=e.cloneNode(!0)).deleteData(0,this.so))),e},remove:function(){var e=this._current,t,r;!n.isCharacterDataNode(e)||e!==this.sc&&e!==this.ec?e.parentNode&&e.parentNode.removeChild(e):(t=e===this.sc?this.so:0,r=e===this.ec?this.eo:e.length,t!=r&&e.deleteData(t,r-t))},isPartiallySelectedSubtree:function(){var e=this._current;return s(e,this.range)},getSubtreeIterator:function(){var e;if(this.isSingleCharacterDataNode)e=this.range.cloneRange(),e.collapse();else{e=new at(o(this.range));var t=this._current,r=t,i=0,s=t,u=n.getNodeLength(t);n.isAncestorOf(t,this.sc,!0)&&(r=this.sc,i=this.so),n.isAncestorOf(t,this.ec,!0)&&(s=this.ec,u=this.eo),ot(e,r,i,s,u)}return new g(e,this.clonePartiallySelectedTextNodes)},detach:function(e){e&&this.range.detach(),this.range=this._current=this._next=this._first=this._last=this.sc=this.so=this.ec=this.eo=null}},y.prototype={BAD_BOUNDARYPOINTS_ERR:1,INVALID_NODE_TYPE_ERR:2},y.prototype.toString=function(){return this.message},b.prototype={_current:null,hasNext:function(){return!!this._next},next:function(){return this._current=this._next,this._next=this.nodes[++this._position],this._current},detach:function(){this._current=this._next=this.nodes=null}};var w=[1,3,4,5,7,8,10],E=[2,9,11],S=[5,6,10
+,12],x=[1,3,4,5,7,8,10,11],T=[1,3,4,5,7,8],C=n.getRootContainer,k=N([9,11]),L=N(S),A=N([6,10,12]),R=document.createElement("style"),U=!1;try{R.innerHTML="<b>x</b>",U=R.firstChild.nodeType==3}catch(z){}e.features.htmlParsingConforms=U;var W=U?function(e){var t=this.startContainer,r=n.getDocument(t);if(!t)throw new i("INVALID_STATE_ERR");var s=null;return t.nodeType==1?s=t:n.isCharacterDataNode(t)&&(s=n.parentElement(t)),s===null||s.nodeName=="HTML"&&n.isHtmlNamespace(n.getDocument(s).documentElement)&&n.isHtmlNamespace(s)?s=r.createElement("body"):s=s.cloneNode(!1),s.innerHTML=e,n.fragmentFromNodeChildren(s)}:function(e){M(this);var t=o(this),r=t.createElement("body");return r.innerHTML=e,n.fragmentFromNodeChildren(r)},X=["startContainer","startOffset","endContainer","endOffset","collapsed","commonAncestorContainer"],V=0,$=1,J=2,K=3,Q=0,G=1,Y=2,Z=3;et.prototype={attachListener:function(e,t){this._listeners[e].push(t)},compareBoundaryPoints:function(e,t){q(this),P(this.startContainer,t.startContainer);var r,i,s,o,u=e==K||e==V?"start":"end",a=e==$||e==V?"start":"end";return r=this[u+"Container"],i=this[u+"Offset"],s=t[a+"Container"],o=t[a+"Offset"],n.comparePoints(r,i,s,o)},insertNode:function(e){q(this),_(e,x),H(this.startContainer);if(n.isAncestorOf(e,this.startContainer,!0))throw new i("HIERARCHY_REQUEST_ERR");var t=l(e,this.startContainer,this.startOffset);this.setStartBefore(t)},cloneContents:function(){q(this);var e,t;if(this.collapsed)return o(this).createDocumentFragment();if(this.startContainer===this.endContainer&&n.isCharacterDataNode(this.startContainer))return e=this.startContainer.cloneNode(!0),e.data=e.data.slice(this.startOffset,this.endOffset),t=o(this).createDocumentFragment(),t.appendChild(e),t;var r=new g(this,!0);return e=c(r),r.detach(),e},canSurroundContents:function(){q(this),H(this.startContainer),H(this.endContainer);var e=new g(this,!0),t=e._first&&s(e._first,this)||e._last&&s(e._last,this);return e.detach(),!t},surroundContents:function(e){_(e,T);if(!this.canSurroundContents())throw new y("BAD_BOUNDARYPOINTS_ERR");var t=this.extractContents();if(e.hasChildNodes())while(e.lastChild)e.removeChild(e.lastChild);l(e,this.startContainer,this.startOffset),e.appendChild(t),this.selectNode(e)},cloneRange:function(){q(this);var e=new at(o(this)),t=X.length,n;while(t--)n=X[t],e[n]=this[n];return e},toString:function(){q(this);var e=this.startContainer;if(e===this.endContainer&&n.isCharacterDataNode(e))return e.nodeType==3||e.nodeType==4?e.data.slice(this.startOffset,this.endOffset):"";var t=[],r=new g(this,!0);return h(r,function(e){(e.nodeType==3||e.nodeType==4)&&t.push(e.data)}),r.detach(),t.join("")},compareNode:function(e){q(this);var t=e.parentNode,r=n.getNodeIndex(e);if(!t)throw new i("NOT_FOUND_ERR");var s=this.comparePoint(t,r),o=this.comparePoint(t,r+1);return s<0?o>0?Y:Q:o>0?G:Z},comparePoint:function(e,t){return q(this),B(e,"HIERARCHY_REQUEST_ERR"),P(e,this.startContainer),n.comparePoints(e,t,this.startContainer,this.startOffset)<0?-1:n.comparePoints(e,t,this.endContainer,this.endOffset)>0?1:0},createContextualFragment:W,toHtml:function(){q(this);var e=o(this).createElement("div");return e.appendChild(this.cloneContents()),e.innerHTML},intersectsNode:function(e,t){q(this),B(e,"NOT_FOUND_ERR");if(n.getDocument(e)!==o(this))return!1;var r=e.parentNode,i=n.getNodeIndex(e);B(r,"NOT_FOUND_ERR");var s=n.comparePoints(r,i,this.endContainer,this.endOffset),u=n.comparePoints(r,i+1,this.startContainer,this.startOffset);return t?s<=0&&u>=0:s<0&&u>0},isPointInRange:function(e,t){return q(this),B(e,"HIERARCHY_REQUEST_ERR"),P(e,this.startContainer),n.comparePoints(e,t,this.startContainer,this.startOffset)>=0&&n.comparePoints(e,t,this.endContainer,this.endOffset)<=0},intersectsRange:function(e,t){q(this);if(o(e)!=o(this))throw new i("WRONG_DOCUMENT_ERR");var r=n.comparePoints(this.startContainer,this.startOffset,e.endContainer,e.endOffset),s=n.comparePoints(this.endContainer,this.endOffset,e.startContainer,e.startOffset);return t?r<=0&&s>=0:r<0&&s>0},intersection:function(e){if(this.intersectsRange(e)){var t=n.comparePoints(this.startContainer,this.startOffset,e.startContainer,e.startOffset),r=n.comparePoints(this.endContainer,this.endOffset,e.endContainer,e.endOffset),i=this.cloneRange();return t==-1&&i.setStart(e.startContainer,e.startOffset),r==1&&i.setEnd(e.endContainer,e.endOffset),i}return null},union:function(e){if(this.intersectsRange(e,!0)){var t=this.cloneRange();return n.comparePoints(e.startContainer,e.startOffset,this.startContainer,this.startOffset)==-1&&t.setStart(e.startContainer,e.startOffset),n.comparePoints(e.endContainer,e.endOffset,this.endContainer,this.endOffset)==1&&t.setEnd(e.endContainer,e.endOffset),t}throw new y("Ranges do not intersect")},containsNode:function(e,t){return t?this.intersectsNode(e,!1):this.compareNode(e)==Z},containsNodeContents:function(e){return this.comparePoint(e,0)>=0&&this.comparePoint(e,n.getNodeLength(e))<=0},containsRange:function(e){return this.intersection(e).equals(e)},containsNodeText:function(e){var t=this.cloneRange();t.selectNode(e);var n=t.getNodes([3]);if(n.length>0){t.setStart(n[0],0);var r=n.pop();t.setEnd(r,r.length);var i=this.containsRange(t);return t.detach(),i}return this.containsNodeContents(e)},createNodeIterator:function(e,t){return q(this),new b(this,e,t)},getNodes:function(e,t){return q(this),v(this,e,t)},getDocument:function(){return o(this)},collapseBefore:function(e){M(this),this.setEndBefore(e),this.collapse(!1)},collapseAfter:function(e){M(this),this.setStartAfter(e),this.collapse(!0)},getName:function(){return"DomRange"},equals:function(e){return at.rangesEqual(this,e)},isValid:function(){return I(this)},inspect:function(){return m(this)}},it(at,ot,ut),e.rangePrototype=et.prototype,at.rangeProperties=X,at.RangeIterator=g,at.copyComparisonConstants=nt,at.createPrototypeRange=it,at.inspect=m,at.getRangeDocument=o,at.rangesEqual=function(e,t){return e.startContainer===t.startContainer&&e.startOffset===t
+.startOffset&&e.endContainer===t.endContainer&&e.endOffset===t.endOffset},e.DomRange=at,e.RangeException=y}),rangy.createModule("WrappedRange",function(e,t){function o(e){var t=e.parentElement(),n=e.duplicate();n.collapse(!0);var i=n.parentElement();n=e.duplicate(),n.collapse(!1);var s=n.parentElement(),o=i==s?i:r.getCommonAncestor(i,s);return o==t?o:r.getCommonAncestor(t,o)}function u(e){return e.compareEndPoints("StartToEnd",e)==0}function a(e,t,n,s){var o=e.duplicate();o.collapse(n);var u=o.parentElement();r.isAncestorOf(t,u,!0)||(u=t);if(!u.canHaveHTML)return new i(u.parentNode,r.getNodeIndex(u));var a=r.getDocument(u).createElement("span"),f,l=n?"StartToStart":"StartToEnd",c,h,p,d;do u.insertBefore(a,a.previousSibling),o.moveToElementText(a);while((f=o.compareEndPoints(l,e))>0&&a.previousSibling);d=a.nextSibling;if(f==-1&&d&&r.isCharacterDataNode(d)){o.setEndPoint(n?"EndToStart":"EndToEnd",e);var v;if(/[\r\n]/.test(d.data)){var m=o.duplicate(),g=m.text.replace(/\r\n/g,"\r").length;v=m.moveStart("character",g);while((f=m.compareEndPoints("StartToEnd",m))==-1)v++,m.moveStart("character",1)}else v=o.text.length;p=new i(d,v)}else c=(s||!n)&&a.previousSibling,h=(s||n)&&a.nextSibling,h&&r.isCharacterDataNode(h)?p=new i(h,0):c&&r.isCharacterDataNode(c)?p=new i(c,c.length):p=new i(u,r.getNodeIndex(a));return a.parentNode.removeChild(a),p}function f(e,t){var n,i,s=e.offset,o=r.getDocument(e.node),u,a,f=o.body.createTextRange(),l=r.isCharacterDataNode(e.node);return l?(n=e.node,i=n.parentNode):(a=e.node.childNodes,n=s<a.length?a[s]:null,i=e.node),u=o.createElement("span"),u.innerHTML="&#feff;",n?i.insertBefore(u,n):i.appendChild(u),f.moveToElementText(u),f.collapse(!t),i.removeChild(u),l&&f[t?"moveStart":"moveEnd"]("character",s),f}e.requireModules(["DomUtil","DomRange"]);var n,r=e.dom,i=r.DomPosition,s=e.DomRange;if(e.features.implementsDomRange&&(!e.features.implementsTextRange||!e.config.preferTextRange))(function(){function u(e){var t=i.length,n;while(t--)n=i[t],e[n]=e.nativeRange[n]}function a(e,t,n,r,i){var s=e.startContainer!==t||e.startOffset!=n,o=e.endContainer!==r||e.endOffset!=i;if(s||o)e.setEnd(r,i),e.setStart(t,n)}function f(e){e.nativeRange.detach(),e.detached=!0;var t=i.length,n;while(t--)n=i[t],e[n]=null}var t,i=s.rangeProperties,o,l;n=function(e){if(!e)throw new Error("Range must be specified");this.nativeRange=e,u(this)},s.createPrototypeRange(n,a,f),t=n.prototype,t.selectNode=function(e){this.nativeRange.selectNode(e),u(this)},t.deleteContents=function(){this.nativeRange.deleteContents(),u(this)},t.extractContents=function(){var e=this.nativeRange.extractContents();return u(this),e},t.cloneContents=function(){return this.nativeRange.cloneContents()},t.surroundContents=function(e){this.nativeRange.surroundContents(e),u(this)},t.collapse=function(e){this.nativeRange.collapse(e),u(this)},t.cloneRange=function(){return new n(this.nativeRange.cloneRange())},t.refresh=function(){u(this)},t.toString=function(){return this.nativeRange.toString()};var c=document.createTextNode("test");r.getBody(document).appendChild(c);var h=document.createRange();h.setStart(c,0),h.setEnd(c,0);try{h.setStart(c,1),o=!0,t.setStart=function(e,t){this.nativeRange.setStart(e,t),u(this)},t.setEnd=function(e,t){this.nativeRange.setEnd(e,t),u(this)},l=function(e){return function(t){this.nativeRange[e](t),u(this)}}}catch(p){o=!1,t.setStart=function(e,t){try{this.nativeRange.setStart(e,t)}catch(n){this.nativeRange.setEnd(e,t),this.nativeRange.setStart(e,t)}u(this)},t.setEnd=function(e,t){try{this.nativeRange.setEnd(e,t)}catch(n){this.nativeRange.setStart(e,t),this.nativeRange.setEnd(e,t)}u(this)},l=function(e,t){return function(n){try{this.nativeRange[e](n)}catch(r){this.nativeRange[t](n),this.nativeRange[e](n)}u(this)}}}t.setStartBefore=l("setStartBefore","setEndBefore"),t.setStartAfter=l("setStartAfter","setEndAfter"),t.setEndBefore=l("setEndBefore","setStartBefore"),t.setEndAfter=l("setEndAfter","setStartAfter"),h.selectNodeContents(c),h.startContainer==c&&h.endContainer==c&&h.startOffset==0&&h.endOffset==c.length?t.selectNodeContents=function(e){this.nativeRange.selectNodeContents(e),u(this)}:t.selectNodeContents=function(e){this.setStart(e,0),this.setEnd(e,s.getEndOffset(e))},h.selectNodeContents(c),h.setEnd(c,3);var d=document.createRange();d.selectNodeContents(c),d.setEnd(c,4),d.setStart(c,2),h.compareBoundaryPoints(h.START_TO_END,d)==-1&h.compareBoundaryPoints(h.END_TO_START,d)==1?t.compareBoundaryPoints=function(e,t){return t=t.nativeRange||t,e==t.START_TO_END?e=t.END_TO_START:e==t.END_TO_START&&(e=t.START_TO_END),this.nativeRange.compareBoundaryPoints(e,t)}:t.compareBoundaryPoints=function(e,t){return this.nativeRange.compareBoundaryPoints(e,t.nativeRange||t)},e.util.isHostMethod(h,"createContextualFragment")&&(t.createContextualFragment=function(e){return this.nativeRange.createContextualFragment(e)}),r.getBody(document).removeChild(c),h.detach(),d.detach()})(),e.createNativeRange=function(e){return e=e||document,e.createRange()};else if(e.features.implementsTextRange){n=function(e){this.textRange=e,this.refresh()},n.prototype=new s(document),n.prototype.refresh=function(){var e,t,n=o(this.textRange);u(this.textRange)?t=e=a(this.textRange,n,!0,!0):(e=a(this.textRange,n,!0,!1),t=a(this.textRange,n,!1,!1)),this.setStart(e.node,e.offset),this.setEnd(t.node,t.offset)},s.copyComparisonConstants(n);var l=function(){return this}();typeof l.Range=="undefined"&&(l.Range=n),e.createNativeRange=function(e){return e=e||document,e.body.createTextRange()}}e.features.implementsTextRange&&(n.rangeToTextRange=function(e){if(e.collapsed){var t=f(new i(e.startContainer,e.startOffset),!0);return t}var n=f(new i(e.startContainer,e.startOffset),!0),s=f(new i(e.endContainer,e.endOffset),!1),o=r.getDocument(e.startContainer).body.createTextRange();return o.setEndPoint("StartToStart",n),o.setEndPoint("EndToEnd",s),o}),n.prototype.getName=function(){return"WrappedRange"},e.WrappedRange=n,e.createRange=function(t){return t=t||
+document,new n(e.createNativeRange(t))},e.createRangyRange=function(e){return e=e||document,new s(e)},e.createIframeRange=function(t){return e.createRange(r.getIframeDocument(t))},e.createIframeRangyRange=function(t){return e.createRangyRange(r.getIframeDocument(t))},e.addCreateMissingNativeApiListener(function(t){var n=t.document;typeof n.createRange=="undefined"&&(n.createRange=function(){return e.createRange(this)}),n=t=null})}),rangy.createModule("WrappedSelection",function(e,t){function p(e){return(e||window).getSelection()}function d(e){return(e||window).document.selection}function L(e,t,n){var r=n?"end":"start",i=n?"start":"end";e.anchorNode=t[r+"Container"],e.anchorOffset=t[r+"Offset"],e.focusNode=t[i+"Container"],e.focusOffset=t[i+"Offset"]}function A(e){var t=e.nativeSelection;e.anchorNode=t.anchorNode,e.anchorOffset=t.anchorOffset,e.focusNode=t.focusNode,e.focusOffset=t.focusOffset}function O(e){e.anchorNode=e.focusNode=null,e.anchorOffset=e.focusOffset=0,e.rangeCount=0,e.isCollapsed=!0,e._ranges.length=0}function M(t){var n;return t instanceof o?(n=t._selectionNativeRange,n||(n=e.createNativeRange(i.getDocument(t.startContainer)),n.setEnd(t.endContainer,t.endOffset),n.setStart(t.startContainer,t.startOffset),t._selectionNativeRange=n,t.attachListener("detach",function(){this._selectionNativeRange=null}))):t instanceof u?n=t.nativeRange:e.features.implementsDomRange&&t instanceof i.getWindow(t.startContainer).Range&&(n=t),n}function _(e){if(!e.length||e[0].nodeType!=1)return!1;for(var t=1,n=e.length;t<n;++t)if(!i.isAncestorOf(e[0],e[t]))return!1;return!0}function D(e){var t=e.getNodes();if(!_(t))throw new Error("getSingleElementFromRange: range "+e.inspect()+" did not consist of a single element");return t[0]}function P(e){return!!e&&typeof e.text!="undefined"}function H(e,t){var n=new u(t);e._ranges=[n],L(e,n,!1),e.rangeCount=1,e.isCollapsed=n.collapsed}function B(t){t._ranges.length=0;if(t.docSelection.type=="None")O(t);else{var n=t.docSelection.createRange();if(P(n))H(t,n);else{t.rangeCount=n.length;var r,s=i.getDocument(n.item(0));for(var o=0;o<t.rangeCount;++o)r=e.createRange(s),r.selectNode(n.item(o)),t._ranges.push(r);t.isCollapsed=t.rangeCount==1&&t._ranges[0].collapsed,L(t,t._ranges[t.rangeCount-1],!1)}}}function j(e,t){var n=e.docSelection.createRange(),r=D(t),s=i.getDocument(n.item(0)),o=i.getBody(s).createControlRange();for(var u=0,a=n.length;u<a;++u)o.add(n.item(u));try{o.add(r)}catch(f){throw new Error("addRange(): Element within the specified Range could not be added to control selection (does it have layout?)")}o.select(),B(e)}function I(e,t,n){this.nativeSelection=e,this.docSelection=t,this._ranges=[],this.win=n,this.refresh()}function R(e,t){var n=i.getDocument(t[0].startContainer),r=i.getBody(n).createControlRange();for(var s=0,o;s<rangeCount;++s){o=D(t[s]);try{r.add(o)}catch(u){throw new Error("setRanges(): Element within the one of the specified Ranges could not be added to control selection (does it have layout?)")}}r.select(),B(e)}function V(e,t){if(e.anchorNode&&i.getDocument(e.anchorNode)!==i.getDocument(t))throw new a("WRONG_DOCUMENT_ERR")}function $(e){var t=[],n=new f(e.anchorNode,e.anchorOffset),r=new f(e.focusNode,e.focusOffset),i=typeof e.getName=="function"?e.getName():"Selection";if(typeof e.rangeCount!="undefined")for(var s=0,u=e.rangeCount;s<u;++s)t[s]=o.inspect(e.getRangeAt(s));return"["+i+"(Ranges: "+t.join(", ")+")(anchor: "+n.inspect()+", focus: "+r.inspect()+"]"}e.requireModules(["DomUtil","DomRange","WrappedRange"]),e.config.checkSelectionRanges=!0;var n="boolean",r="_rangySelection",i=e.dom,s=e.util,o=e.DomRange,u=e.WrappedRange,a=e.DOMException,f=i.DomPosition,l,c,h="Control",v=e.util.isHostMethod(window,"getSelection"),m=e.util.isHostObject(document,"selection"),g=m&&(!v||e.config.preferTextRange);g?(l=d,e.isSelectionValid=function(e){var t=(e||window).document,n=t.selection;return n.type!="None"||i.getDocument(n.createRange().parentElement())==t}):v?(l=p,e.isSelectionValid=function(){return!0}):t.fail("Neither document.selection or window.getSelection() detected."),e.getNativeSelection=l;var y=l(),b=e.createNativeRange(document),w=i.getBody(document),E=s.areHostObjects(y,["anchorNode","focusNode"]&&s.areHostProperties(y,["anchorOffset","focusOffset"]));e.features.selectionHasAnchorAndFocus=E;var S=s.isHostMethod(y,"extend");e.features.selectionHasExtend=S;var x=typeof y.rangeCount=="number";e.features.selectionHasRangeCount=x;var T=!1,N=!0;s.areHostMethods(y,["addRange","getRangeAt","removeAllRanges"])&&typeof y.rangeCount=="number"&&e.features.implementsDomRange&&function(){var e=document.createElement("iframe");e.frameBorder=0,e.style.position="absolute",e.style.left="-10000px",w.appendChild(e);var t=i.getIframeDocument(e);t.open(),t.write("<html><head></head><body>12</body></html>"),t.close();var n=i.getIframeWindow(e).getSelection(),r=t.documentElement,s=r.lastChild,o=s.firstChild,u=t.createRange();u.setStart(o,1),u.collapse(!0),n.addRange(u),N=n.rangeCount==1,n.removeAllRanges();var a=u.cloneRange();u.setStart(o,0),a.setEnd(o,2),n.addRange(u),n.addRange(a),T=n.rangeCount==2,u.detach(),a.detach(),w.removeChild(e)}(),e.features.selectionSupportsMultipleRanges=T,e.features.collapsedNonEditableSelectionsSupported=N;var C=!1,k;w&&s.isHostMethod(w,"createControlRange")&&(k=w.createControlRange(),s.areHostProperties(k,["item","add"])&&(C=!0)),e.features.implementsControlRange=C,E?c=function(e){return e.anchorNode===e.focusNode&&e.anchorOffset===e.focusOffset}:c=function(e){return e.rangeCount?e.getRangeAt(e.rangeCount-1).collapsed:!1};var F;s.isHostMethod(y,"getRangeAt")?F=function(e,t){try{return e.getRangeAt(t)}catch(n){return null}}:E&&(F=function(t){var n=i.getDocument(t.anchorNode),r=e.createRange(n);return r.setStart(t.anchorNode,t.anchorOffset),r.setEnd(t.focusNode,t.focusOffset),r.collapsed!==this.isCollapsed&&(r.setStart(t.focusNode,t.focusOffset),r.setEnd(t.anchorNode,t.anchorOffset)),r}),e.getSelection=function(e){e=e||window
+;var t=e[r],n=l(e),i=m?d(e):null;return t?(t.nativeSelection=n,t.docSelection=i,t.refresh(e)):(t=new I(n,i,e),e[r]=t),t},e.getIframeSelection=function(t){return e.getSelection(i.getIframeWindow(t))};var q=I.prototype;if(!g&&E&&s.areHostMethods(y,["removeAllRanges","addRange"])){q.removeAllRanges=function(){this.nativeSelection.removeAllRanges(),O(this)};var U=function(t,n){var r=o.getRangeDocument(n),i=e.createRange(r);i.collapseToPoint(n.endContainer,n.endOffset),t.nativeSelection.addRange(M(i)),t.nativeSelection.extend(n.startContainer,n.startOffset),t.refresh()};x?q.addRange=function(t,n){if(C&&m&&this.docSelection.type==h)j(this,t);else if(n&&S)U(this,t);else{var r;T?r=this.rangeCount:(this.removeAllRanges(),r=0),this.nativeSelection.addRange(M(t)),this.rangeCount=this.nativeSelection.rangeCount;if(this.rangeCount==r+1){if(e.config.checkSelectionRanges){var i=F(this.nativeSelection,this.rangeCount-1);i&&!o.rangesEqual(i,t)&&(t=new u(i))}this._ranges[this.rangeCount-1]=t,L(this,t,X(this.nativeSelection)),this.isCollapsed=c(this)}else this.refresh()}}:q.addRange=function(e,t){t&&S?U(this,e):(this.nativeSelection.addRange(M(e)),this.refresh())},q.setRanges=function(e){if(C&&e.length>1)R(this,e);else{this.removeAllRanges();for(var t=0,n=e.length;t<n;++t)this.addRange(e[t])}}}else{if(!(s.isHostMethod(y,"empty")&&s.isHostMethod(b,"select")&&C&&g))return t.fail("No means of selecting a Range or TextRange was found"),!1;q.removeAllRanges=function(){try{this.docSelection.empty();if(this.docSelection.type!="None"){var e;if(this.anchorNode)e=i.getDocument(this.anchorNode);else if(this.docSelection.type==h){var t=this.docSelection.createRange();t.length&&(e=i.getDocument(t.item(0)).body.createTextRange())}if(e){var n=e.body.createTextRange();n.select(),this.docSelection.empty()}}}catch(r){}O(this)},q.addRange=function(e){this.docSelection.type==h?j(this,e):(u.rangeToTextRange(e).select(),this._ranges[0]=e,this.rangeCount=1,this.isCollapsed=this._ranges[0].collapsed,L(this,e,!1))},q.setRanges=function(e){this.removeAllRanges();var t=e.length;t>1?R(this,e):t&&this.addRange(e[0])}}q.getRangeAt=function(e){if(e<0||e>=this.rangeCount)throw new a("INDEX_SIZE_ERR");return this._ranges[e]};var z;if(g)z=function(t){var n;e.isSelectionValid(t.win)?n=t.docSelection.createRange():(n=i.getBody(t.win.document).createTextRange(),n.collapse(!0)),t.docSelection.type==h?B(t):P(n)?H(t,n):O(t)};else if(s.isHostMethod(y,"getRangeAt")&&typeof y.rangeCount=="number")z=function(t){if(C&&m&&t.docSelection.type==h)B(t);else{t._ranges.length=t.rangeCount=t.nativeSelection.rangeCount;if(t.rangeCount){for(var n=0,r=t.rangeCount;n<r;++n)t._ranges[n]=new e.WrappedRange(t.nativeSelection.getRangeAt(n));L(t,t._ranges[t.rangeCount-1],X(t.nativeSelection)),t.isCollapsed=c(t)}else O(t)}};else{if(!E||typeof y.isCollapsed!=n||typeof b.collapsed!=n||!e.features.implementsDomRange)return t.fail("No means of obtaining a Range or TextRange from the user's selection was found"),!1;z=function(e){var t,n=e.nativeSelection;n.anchorNode?(t=F(n,0),e._ranges=[t],e.rangeCount=1,A(e),e.isCollapsed=c(e)):O(e)}}q.refresh=function(e){var t=e?this._ranges.slice(0):null;z(this);if(e){var n=t.length;if(n!=this._ranges.length)return!1;while(n--)if(!o.rangesEqual(t[n],this._ranges[n]))return!1;return!0}};var W=function(e,t){var n=e.getAllRanges(),r=!1;e.removeAllRanges();for(var i=0,s=n.length;i<s;++i)r||t!==n[i]?e.addRange(n[i]):r=!0;e.rangeCount||O(e)};C?q.removeRange=function(e){if(this.docSelection.type==h){var t=this.docSelection.createRange(),n=D(e),r=i.getDocument(t.item(0)),s=i.getBody(r).createControlRange(),o,u=!1;for(var a=0,f=t.length;a<f;++a)o=t.item(a),o!==n||u?s.add(t.item(a)):u=!0;s.select(),B(this)}else W(this,e)}:q.removeRange=function(e){W(this,e)};var X;!g&&E&&e.features.implementsDomRange?(X=function(e){var t=!1;return e.anchorNode&&(t=i.comparePoints(e.anchorNode,e.anchorOffset,e.focusNode,e.focusOffset)==1),t},q.isBackwards=function(){return X(this)}):X=q.isBackwards=function(){return!1},q.toString=function(){var e=[];for(var t=0,n=this.rangeCount;t<n;++t)e[t]=""+this._ranges[t];return e.join("")},q.collapse=function(t,n){V(this,t);var r=e.createRange(i.getDocument(t));r.collapseToPoint(t,n),this.removeAllRanges(),this.addRange(r),this.isCollapsed=!0},q.collapseToStart=function(){if(!this.rangeCount)throw new a("INVALID_STATE_ERR");var e=this._ranges[0];this.collapse(e.startContainer,e.startOffset)},q.collapseToEnd=function(){if(!this.rangeCount)throw new a("INVALID_STATE_ERR");var e=this._ranges[this.rangeCount-1];this.collapse(e.endContainer,e.endOffset)},q.selectAllChildren=function(t){V(this,t);var n=e.createRange(i.getDocument(t));n.selectNodeContents(t),this.removeAllRanges(),this.addRange(n)},q.deleteFromDocument=function(){if(C&&m&&this.docSelection.type==h){var e=this.docSelection.createRange(),t;while(e.length)t=e.item(0),e.remove(t),t.parentNode.removeChild(t);this.refresh()}else if(this.rangeCount){var n=this.getAllRanges();this.removeAllRanges();for(var r=0,i=n.length;r<i;++r)n[r].deleteContents();this.addRange(n[i-1])}},q.getAllRanges=function(){return this._ranges.slice(0)},q.setSingleRange=function(e){this.setRanges([e])},q.containsNode=function(e,t){for(var n=0,r=this._ranges.length;n<r;++n)if(this._ranges[n].containsNode(e,t))return!0;return!1},q.toHtml=function(){var e="";if(this.rangeCount){var t=o.getRangeDocument(this._ranges[0]).createElement("div");for(var n=0,r=this._ranges.length;n<r;++n)t.appendChild(this._ranges[n].cloneContents());e=t.innerHTML}return e},q.getName=function(){return"WrappedSelection"},q.inspect=function(){return $(this)},q.detach=function(){this.win[r]=null,this.win=this.anchorNode=this.focusNode=null},I.inspect=$,e.Selection=I,e.selectionPrototype=q,e.addCreateMissingNativeApiListener(function(t){typeof t.getSelection=="undefined"&&(t.getSelection=function(){return e.getSelection(this)}),t=null})}),rangy.createModule("CssClassApplier",function(e,t){function i(e){return e.replace(/^\s\s*/
+,"").replace(/\s\s*$/,"")}function s(e,t){return e.className&&(new RegExp("(?:^|\\s)"+t+"(?:\\s|$)")).test(e.className)}function o(e,t){e.className?s(e,t)||(e.className+=" "+t):e.className=t}function a(e){return e.split(/\s+/).sort().join(" ")}function f(e){return a(e.className)}function l(e,t){return f(e)==f(t)}function c(e){var t=e.parentNode;while(e.hasChildNodes())t.insertBefore(e.firstChild,e);t.removeChild(e)}function h(e,t){var n=e.cloneRange();n.selectNodeContents(t);var r=n.intersection(e),i=r?r.toString():"";return n.detach(),i!=""}function p(e){return e.getNodes([3],function(t){return h(e,t)})}function d(e,t){if(e.attributes.length!=t.attributes.length)return!1;for(var n=0,r=e.attributes.length,i,s,o;n<r;++n){i=e.attributes[n],o=i.name;if(o!="class"){s=t.attributes.getNamedItem(o);if(i.specified!=s.specified)return!1;if(i.specified&&i.nodeValue!==s.nodeValue)return!1}}return!0}function v(e,t){for(var r=0,i=e.attributes.length,s;r<i;++r){s=e.attributes[r].name;if((!t||!n.arrayContains(t,s))&&e.attributes[r].specified&&s!="class")return!0}return!1}function m(e,t){for(var n in t)if(t.hasOwnProperty(n)&&e[n]!==t[n])return!1;return!0}function b(e){var t;return e&&e.nodeType==1&&((t=e.parentNode)&&t.nodeType==9&&t.designMode=="on"||y(e)&&!y(e.parentNode))}function w(e){return(y(e)||e.nodeType!=1&&y(e.parentNode))&&!b(e)}function S(e){return e&&e.nodeType==1&&!E.test(g(e,"display"))}function T(e){if(e.data.length==0)return!0;if(x.test(e.data))return!1;var t=g(e.parentNode,"whiteSpace");switch(t){case"pre":case"pre-wrap":case"-moz-pre-wrap":return!1;case"pre-line":if(/[\r\n]/.test(e.data))return!1}return S(e.previousSibling)||S(e.nextSibling)}function N(e,t){return n.isCharacterDataNode(e)?t==0?!!e.previousSibling:t==e.length?!!e.nextSibling:!0:t>0&&t<e.childNodes.length}function C(e,r,i,s){var o,u=i==0;if(n.isAncestorOf(r,e))return e;if(n.isCharacterDataNode(r))if(i==0)i=n.getNodeIndex(r),r=r.parentNode;else{if(i!=r.length)throw t.createError("splitNodeAt should not be called with offset in the middle of a data node ("+i+" in "+r.data);i=n.getNodeIndex(r)+1,r=r.parentNode}if(N(r,i)){if(!o){o=r.cloneNode(!1),o.id&&o.removeAttribute("id");var a;while(a=r.childNodes[i])o.appendChild(a);n.insertAfter(o,r)}return r==e?o:C(e,o.parentNode,n.getNodeIndex(o),s)}if(e!=r){o=r.parentNode;var f=n.getNodeIndex(r);return u||f++,C(e,o,f,s)}return e}function k(e,t){return e.tagName==t.tagName&&l(e,t)&&d(e,t)}function L(e){var t=e?"nextSibling":"previousSibling";return function(n,r){var i=n.parentNode,s=n[t];if(s){if(s&&s.nodeType==3)return s}else if(r){s=i[t];if(s&&s.nodeType==1&&k(i,s))return s[e?"firstChild":"lastChild"]}return null}}function M(e){this.isElementMerge=e.nodeType==1,this.firstTextNode=this.isElementMerge?e.lastChild:e,this.textNodes=[this.firstTextNode]}function P(e,t,n){this.cssClass=e;var r,s,o,u,f=null;if(typeof t=="object"&&t!==null){n=t.tagNames,f=t.elementProperties;for(s=0;u=_[s++];)t.hasOwnProperty(u)&&(this[u]=t[u]);r=t.normalize}else r=t;this.normalize=typeof r=="undefined"?!0:r,this.attrExceptions=[];var l=document.createElement(this.elementTagName);this.elementProperties={};for(var c in f)f.hasOwnProperty(c)&&(D.hasOwnProperty(c)&&(c=D[c]),l[c]=f[c],this.elementProperties[c]=l[c],this.attrExceptions.push(c));this.elementSortedClassName=this.elementProperties.hasOwnProperty("className")?a(this.elementProperties.className+" "+e):e,this.applyToAnyTagName=!1;var h=typeof n;if(h=="string")n=="*"?this.applyToAnyTagName=!0:this.tagNames=i(n.toLowerCase()).split(/\s*,\s*/);else if(h=="object"&&typeof n.length=="number"){this.tagNames=[];for(s=0,o=n.length;s<o;++s)n[s]=="*"?this.applyToAnyTagName=!0:this.tagNames.push(n[s].toLowerCase())}else this.tagNames=[this.elementTagName]}function H(e,t,n){return new P(e,t,n)}e.requireModules(["WrappedSelection","WrappedRange"]);var n=e.dom,r="span",u=function(){function e(e,t,n){return t&&n?" ":""}return function(t,n){t.className&&(t.className=t.className.replace(new RegExp("(?:^|\\s)"+n+"(?:\\s|$)"),e))}}(),g;typeof window.getComputedStyle!="undefined"?g=function(e,t){return n.getWindow(e).getComputedStyle(e,null)[t]}:typeof document.documentElement.currentStyle!="undefined"?g=function(e,t){return e.currentStyle[t]}:t.fail("No means of obtaining computed style properties found");var y;(function(){var e=document.createElement("div");typeof e.isContentEditable=="boolean"?y=function(e){return e&&e.nodeType==1&&e.isContentEditable}:y=function(e){return!e||e.nodeType!=1||e.contentEditable=="false"?!1:e.contentEditable=="true"||y(e.parentNode)}})();var E=/^inline(-block|-table)?$/i,x=/[^\r\n\t\f \u200B]/,A=L(!1),O=L(!0);M.prototype={doMerge:function(){var e=[],t,n,r;for(var i=0,s=this.textNodes.length;i<s;++i)t=this.textNodes[i],n=t.parentNode,e[i]=t.data,i&&(n.removeChild(t),n.hasChildNodes()||n.parentNode.removeChild(n));return this.firstTextNode.data=r=e.join(""),r},getLength:function(){var e=this.textNodes.length,t=0;while(e--)t+=this.textNodes[e].length;return t},toString:function(){var e=[];for(var t=0,n=this.textNodes.length;t<n;++t)e[t]="'"+this.textNodes[t].data+"'";return"[Merge("+e.join(",")+")]"}};var _=["elementTagName","ignoreWhiteSpace","applyToEditableOnly"],D={"class":"className"};P.prototype={elementTagName:r,elementProperties:{},ignoreWhiteSpace:!0,applyToEditableOnly:!1,hasClass:function(e){return e.nodeType==1&&n.arrayContains(this.tagNames,e.tagName.toLowerCase())&&s(e,this.cssClass)},getSelfOrAncestorWithClass:function(e){while(e){if(this.hasClass(e,this.cssClass))return e;e=e.parentNode}return null},isModifiable:function(e){return!this.applyToEditableOnly||w(e)},isIgnorableWhiteSpaceNode:function(e){return this.ignoreWhiteSpace&&e&&e.nodeType==3&&T(e)},postApply:function(e,t,n){var r=e[0],i=e[e.length-1],s=[],o,u=r,a=i,f=0,l=i.length,c,h;for(var p=0,d=e.length;p<d;++p)c=e[p],h=A(c,!n),h?(o||(o=new M(h),s.push(o)),o.textNodes.push(c),c===r&&(u=o.firstTextNode,f=u.length),c===i&&(a=o.firstTextNode,l=o.getLength())):o=null;var v=
+O(i,!n);v&&(o||(o=new M(i),s.push(o)),o.textNodes.push(v));if(s.length){for(p=0,d=s.length;p<d;++p)s[p].doMerge();t.setStart(u,f),t.setEnd(a,l)}},createContainer:function(t){var n=t.createElement(this.elementTagName);return e.util.extend(n,this.elementProperties),o(n,this.cssClass),n},applyToTextNode:function(e){var t=e.parentNode;if(t.childNodes.length==1&&n.arrayContains(this.tagNames,t.tagName.toLowerCase()))o(t,this.cssClass);else{var r=this.createContainer(n.getDocument(e));e.parentNode.insertBefore(r,e),r.appendChild(e)}},isRemovable:function(e){return e.tagName.toLowerCase()==this.elementTagName&&f(e)==this.elementSortedClassName&&m(e,this.elementProperties)&&!v(e,this.attrExceptions)&&this.isModifiable(e)},undoToTextNode:function(e,t,n){if(!t.containsNode(n)){var r=t.cloneRange();r.selectNode(n),r.isPointInRange(t.endContainer,t.endOffset)&&(C(n,t.endContainer,t.endOffset,[t]),t.setEndAfter(n)),r.isPointInRange(t.startContainer,t.startOffset)&&(n=C(n,t.startContainer,t.startOffset,[t]))}this.isRemovable(n)?c(n):u(n,this.cssClass)},applyToRange:function(e){e.splitBoundaries();var t=p(e);if(t.length){var n;for(var r=0,i=t.length;r<i;++r)n=t[r],!this.isIgnorableWhiteSpaceNode(n)&&!this.getSelfOrAncestorWithClass(n)&&this.isModifiable(n)&&this.applyToTextNode(n);e.setStart(t[0],0),n=t[t.length-1],e.setEnd(n,n.length),this.normalize&&this.postApply(t,e,!1)}},applyToSelection:function(t){t=t||window;var n=e.getSelection(t),r,i=n.getAllRanges();n.removeAllRanges();var s=i.length;while(s--)r=i[s],this.applyToRange(r),n.addRange(r)},undoToRange:function(e){e.splitBoundaries();var t=p(e),n,r,i=t[t.length-1];if(t.length){for(var s=0,o=t.length;s<o;++s)n=t[s],r=this.getSelfOrAncestorWithClass(n),r&&this.isModifiable(n)&&this.undoToTextNode(n,e,r),e.setStart(t[0],0),e.setEnd(i,i.length);this.normalize&&this.postApply(t,e,!0)}},undoToSelection:function(t){t=t||window;var n=e.getSelection(t),r=n.getAllRanges(),i;n.removeAllRanges();for(var s=0,o=r.length;s<o;++s)i=r[s],this.undoToRange(i),n.addRange(i)},getTextSelectedByRange:function(e,t){var n=t.cloneRange();n.selectNodeContents(e);var r=n.intersection(t),i=r?r.toString():"";return n.detach(),i},isAppliedToRange:function(e){if(e.collapsed)return!!this.getSelfOrAncestorWithClass(e.commonAncestorContainer);var t=e.getNodes([3]);for(var n=0,r;r=t[n++];)if(!this.isIgnorableWhiteSpaceNode(r)&&h(e,r)&&this.isModifiable(r)&&!this.getSelfOrAncestorWithClass(r))return!1;return!0},isAppliedToSelection:function(t){t=t||window;var n=e.getSelection(t),r=n.getAllRanges(),i=r.length;while(i--)if(!this.isAppliedToRange(r[i]))return!1;return!0},toggleRange:function(e){this.isAppliedToRange(e)?this.undoToRange(e):this.applyToRange(e)},toggleSelection:function(e){this.isAppliedToSelection(e)?this.undoToSelection(e):this.applyToSelection(e)},detach:function(){}},P.util={hasClass:s,addClass:o,removeClass:u,hasSameClasses:l,replaceWithOwnChildren:c,elementsHaveSameNonClassAttributes:d,elementHasNonClassAttributes:v,splitNodeAt:C,isEditableElement:y,isEditingHost:b,isEditable:w},e.CssClassApplier=P,e.createCssClassApplier=H}),rangy.createModule("SaveRestore",function(e,t){function i(e,t){return(t||document).getElementById(e)}function s(e,t){var i="selectionBoundary_"+ +(new Date)+"_"+(""+Math.random()).slice(2),s,o=n.getDocument(e.startContainer),u=e.cloneRange();return u.collapse(t),s=o.createElement("span"),s.id=i,s.style.lineHeight="0",s.style.display="none",s.className="rangySelectionBoundary",s.appendChild(o.createTextNode(r)),u.insertNode(s),u.detach(),s}function o(e,n,r,s){var o=i(r,e);o?(n[s?"setStartBefore":"setEndBefore"](o),o.parentNode.removeChild(o)):t.warn("Marker element has been removed. Cannot restore selection.")}function u(e,t){return t.compareBoundaryPoints(e.START_TO_START,e)}function a(n){n=n||window;var r=n.document;if(!e.isSelectionValid(n)){t.warn("Cannot save selection. This usually happens when the selection is collapsed and the selection document has lost focus.");return}var o=e.getSelection(n),a=o.getAllRanges(),f=[],l,c,h;a.sort(u);for(var p=0,d=a.length;p<d;++p)h=a[p],h.collapsed?(c=s(h,!1),f.push({markerId:c.id,collapsed:!0})):(c=s(h,!1),l=s(h,!0),f[p]={startMarkerId:l.id,endMarkerId:c.id,collapsed:!1,backwards:a.length==1&&o.isBackwards()});for(p=d-1;p>=0;--p)h=a[p],h.collapsed?h.collapseBefore(i(f[p].markerId,r)):(h.setEndBefore(i(f[p].endMarkerId,r)),h.setStartAfter(i(f[p].startMarkerId,r)));return o.setRanges(a),{win:n,doc:r,rangeInfos:f,restored:!1}}function f(n,r){if(!n.restored){var s=n.rangeInfos,u=e.getSelection(n.win),a=[];for(var f=s.length,l=f-1,c,h;l>=0;--l){c=s[l],h=e.createRange(n.doc);if(c.collapsed){var p=i(c.markerId,n.doc);if(p){p.style.display="inline";var d=p.previousSibling;d&&d.nodeType==3?(p.parentNode.removeChild(p),h.collapseToPoint(d,d.length)):(h.collapseBefore(p),p.parentNode.removeChild(p))}else t.warn("Marker element has been removed. Cannot restore selection.")}else o(n.doc,h,c.startMarkerId,!0),o(n.doc,h,c.endMarkerId,!1);f==1&&h.normalizeBoundaries(),a[l]=h}f==1&&r&&e.features.selectionHasExtend&&s[0].backwards?(u.removeAllRanges(),u.addRange(a[0],!0)):u.setRanges(a),n.restored=!0}}function l(e,t){var n=i(t,e);n&&n.parentNode.removeChild(n)}function c(e){var t=e.rangeInfos;for(var n=0,r=t.length,i;n<r;++n)i=t[n],i.collapsed?l(e.doc,i.markerId):(l(e.doc,i.startMarkerId),l(e.doc,i.endMarkerId))}e.requireModules(["DomUtil","DomRange","WrappedRange"]);var n=e.dom,r="\ufeff";e.saveSelection=a,e.restoreSelection=f,e.removeMarkerElement=l,e.removeMarkers=c}),rangy.createModule("Serializer",function(e,t){function s(e){return e.replace(/</g,"&lt;").replace(/>/g,"&gt;")}function o(e,t){t=t||[];var n=e.nodeType,r=e.childNodes,i=r.length,u=[n,e.nodeName,i].join(":"),a="",f="";switch(n){case 3:a=s(e.nodeValue);break;case 8:a="<!--"+s(e.nodeValue)+"-->";break;default:a="<"+u+">",f="</>"}a&&t.push(a);for(var l=0;l<i;++l)o(r[l],t);return f&&t.push(f),t}function u(e){var t=o(e).join("");return r(t).toString(16)}function a
+(e,t,n){var r=[],s=e;n=n||i.getDocument(e).documentElement;while(s&&s!=n)r.push(i.getNodeIndex(s,!0)),s=s.parentNode;return r.join("/")+":"+t}function f(e,n,r){n?r=r||i.getDocument(n):(r=r||document,n=r.documentElement);var s=e.split(":"),o=n,u=s[0]?s[0].split("/"):[],a=u.length,f;while(a--){f=parseInt(u[a],10);if(!(f<o.childNodes.length))throw t.createError("deserializePosition failed: node "+i.inspectNode(o)+" has no child with index "+f+", "+a);o=o.childNodes[parseInt(u[a],10)]}return new i.DomPosition(o,parseInt(s[1],10))}function l(t,n,r){r=r||e.DomRange.getRangeDocument(t).documentElement;if(!i.isAncestorOf(r,t.commonAncestorContainer,!0))throw new Error("serializeRange: range is not wholly contained within specified root node");var s=a(t.startContainer,t.startOffset,r)+","+a(t.endContainer,t.endOffset,r);return n||(s+="{"+u(r)+"}"),s}function c(t,n,r){n?r=r||i.getDocument(n):(r=r||document,n=r.documentElement);var s=/^([^,]+),([^,\{]+)({([^}]+)})?$/.exec(t),o=s[4],a=u(n);if(o&&o!==u(n))throw new Error("deserializeRange: checksums of serialized range root node ("+o+") and target root node ("+a+") do not match");var l=f(s[1],n,r),c=f(s[2],n,r),h=e.createRange(r);return h.setStart(l.node,l.offset),h.setEnd(c.node,c.offset),h}function h(e,t,n){t?n=n||i.getDocument(t):(n=n||document,t=n.documentElement);var r=/^([^,]+),([^,]+)({([^}]+)})?$/.exec(e),s=r[3];return!s||s===u(t)}function p(t,n,r){t=t||e.getSelection();var i=t.getAllRanges(),s=[];for(var o=0,u=i.length;o<u;++o)s[o]=l(i[o],n,r);return s.join("|")}function d(t,n,r){n?r=r||i.getWindow(n):(r=r||window,n=r.document.documentElement);var s=t.split("|"),o=e.getSelection(r),u=[];for(var a=0,f=s.length;a<f;++a)u[a]=c(s[a],n,r.document);return o.setRanges(u),o}function v(e,t,n){var r;t?r=n?n.document:i.getDocument(t):(n=n||window,t=n.document.documentElement);var s=e.split("|");for(var o=0,u=s.length;o<u;++o)if(!h(s[o],t,r))return!1;return!0}function g(e){var t=e.split(/[;,]/);for(var n=0,r=t.length,i,s;n<r;++n){i=t[n].split("=");if(i[0].replace(/^\s+/,"")==m){s=i[1];if(s)return decodeURIComponent(s.replace(/\s+$/,""))}}return null}function y(e){e=e||window;var t=g(e.document.cookie);t&&d(t,e.doc)}function b(t,n){t=t||window,n=typeof n=="object"?n:{};var r=n.expires?";expires="+n.expires.toUTCString():"",i=n.path?";path="+n.path:"",s=n.domain?";domain="+n.domain:"",o=n.secure?";secure":"",u=p(e.getSelection(t));t.document.cookie=encodeURIComponent(m)+"="+encodeURIComponent(u)+r+i+s+o}e.requireModules(["WrappedSelection","WrappedRange"]);var n="undefined";(typeof encodeURIComponent==n||typeof decodeURIComponent==n)&&t.fail("Global object is missing encodeURIComponent and/or decodeURIComponent method");var r=function(){function e(e){var t=[];for(var n=0,r=e.length,i;n<r;++n)i=e.charCodeAt(n),i<128?t.push(i):i<2048?t.push(i>>6|192,i&63|128):t.push(i>>12|224,i>>6&63|128,i&63|128);return t}function n(){var e=[];for(var t=0,n,r;t<256;++t){r=t,n=8;while(n--)(r&1)==1?r=r>>>1^3988292384:r>>>=1;e[t]=r>>>0}return e}function r(){return t||(t=n()),t}var t=null;return function(t){var n=e(t),i=-1,s=r();for(var o=0,u=n.length,a;o<u;++o)a=(i^n[o])&255,i=i>>>8^s[a];return(i^-1)>>>0}}(),i=e.dom,m="rangySerializedSelection";e.serializePosition=a,e.deserializePosition=f,e.serializeRange=l,e.deserializeRange=c,e.canDeserializeRange=h,e.serializeSelection=p,e.deserializeSelection=d,e.canDeserializeSelection=v,e.restoreSelectionFromCookie=y,e.saveSelectionCookie=b,e.getElementChecksum=u}),YUI.add("moodle-editor_atto-rangy",function(e,t){rangy.initialized||rangy.init()},"@VERSION@",{requires:[]});
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy.js b/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy.js
new file mode 100644
index 00000000000..05c06c82890
--- /dev/null
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-rangy/moodle-editor_atto-rangy.js
@@ -0,0 +1,4458 @@
+/**
+ * @license Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+window['rangy'] = (function() {
+
+
+    var OBJECT = "object", FUNCTION = "function", UNDEFINED = "undefined";
+
+    var domRangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
+        "commonAncestorContainer", "START_TO_START", "START_TO_END", "END_TO_START", "END_TO_END"];
+
+    var domRangeMethods = ["setStart", "setStartBefore", "setStartAfter", "setEnd", "setEndBefore",
+        "setEndAfter", "collapse", "selectNode", "selectNodeContents", "compareBoundaryPoints", "deleteContents",
+        "extractContents", "cloneContents", "insertNode", "surroundContents", "cloneRange", "toString", "detach"];
+
+    var textRangeProperties = ["boundingHeight", "boundingLeft", "boundingTop", "boundingWidth", "htmlText", "text"];
+
+    // Subset of TextRange's full set of methods that we're interested in
+    var textRangeMethods = ["collapse", "compareEndPoints", "duplicate", "getBookmark", "moveToBookmark",
+        "moveToElementText", "parentElement", "pasteHTML", "select", "setEndPoint", "getBoundingClientRect"];
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Trio of functions taken from Peter Michaux's article:
+    // http://peter.michaux.ca/articles/feature-detection-state-of-the-art-browser-scripting
+    function isHostMethod(o, p) {
+        var t = typeof o[p];
+        return t == FUNCTION || (!!(t == OBJECT && o[p])) || t == "unknown";
+    }
+
+    function isHostObject(o, p) {
+        return !!(typeof o[p] == OBJECT && o[p]);
+    }
+
+    function isHostProperty(o, p) {
+        return typeof o[p] != UNDEFINED;
+    }
+
+    // Creates a convenience function to save verbose repeated calls to tests functions
+    function createMultiplePropertyTest(testFunc) {
+        return function(o, props) {
+            var i = props.length;
+            while (i--) {
+                if (!testFunc(o, props[i])) {
+                    return false;
+                }
+            }
+            return true;
+        };
+    }
+
+    // Next trio of functions are a convenience to save verbose repeated calls to previous two functions
+    var areHostMethods = createMultiplePropertyTest(isHostMethod);
+    var areHostObjects = createMultiplePropertyTest(isHostObject);
+    var areHostProperties = createMultiplePropertyTest(isHostProperty);
+
+    function isTextRange(range) {
+        return range && areHostMethods(range, textRangeMethods) && areHostProperties(range, textRangeProperties);
+    }
+
+    var api = {
+        version: "1.2.3",
+        initialized: false,
+        supported: true,
+
+        util: {
+            isHostMethod: isHostMethod,
+            isHostObject: isHostObject,
+            isHostProperty: isHostProperty,
+            areHostMethods: areHostMethods,
+            areHostObjects: areHostObjects,
+            areHostProperties: areHostProperties,
+            isTextRange: isTextRange
+        },
+
+        features: {},
+
+        modules: {},
+        config: {
+            alertOnWarn: false,
+            preferTextRange: false
+        }
+    };
+
+    function fail(reason) {
+        window.alert("Rangy not supported in your browser. Reason: " + reason);
+        api.initialized = true;
+        api.supported = false;
+    }
+
+    api.fail = fail;
+
+    function warn(msg) {
+        var warningMessage = "Rangy warning: " + msg;
+        if (api.config.alertOnWarn) {
+            window.alert(warningMessage);
+        } else if (typeof window.console != UNDEFINED && typeof window.console.log != UNDEFINED) {
+            window.console.log(warningMessage);
+        }
+    }
+
+    api.warn = warn;
+
+    if ({}.hasOwnProperty) {
+        api.util.extend = function(o, props) {
+            for (var i in props) {
+                if (props.hasOwnProperty(i)) {
+                    o[i] = props[i];
+                }
+            }
+        };
+    } else {
+        fail("hasOwnProperty not supported");
+    }
+
+    var initListeners = [];
+    var moduleInitializers = [];
+
+    // Initialization
+    function init() {
+        if (api.initialized) {
+            return;
+        }
+        var testRange;
+        var implementsDomRange = false, implementsTextRange = false;
+
+        // First, perform basic feature tests
+
+        if (isHostMethod(document, "createRange")) {
+            testRange = document.createRange();
+            if (areHostMethods(testRange, domRangeMethods) && areHostProperties(testRange, domRangeProperties)) {
+                implementsDomRange = true;
+            }
+            testRange.detach();
+        }
+
+        var body = isHostObject(document, "body") ? document.body : document.getElementsByTagName("body")[0];
+
+        if (body && isHostMethod(body, "createTextRange")) {
+            testRange = body.createTextRange();
+            if (isTextRange(testRange)) {
+                implementsTextRange = true;
+            }
+        }
+
+        if (!implementsDomRange && !implementsTextRange) {
+            fail("Neither Range nor TextRange are implemented");
+        }
+
+        api.initialized = true;
+        api.features = {
+            implementsDomRange: implementsDomRange,
+            implementsTextRange: implementsTextRange
+        };
+
+        // Initialize modules and call init listeners
+        var allListeners = moduleInitializers.concat(initListeners);
+        for (var i = 0, len = allListeners.length; i < len; ++i) {
+            try {
+                allListeners[i](api);
+            } catch (ex) {
+                if (isHostObject(window, "console") && isHostMethod(window.console, "log")) {
+                    window.console.log("Init listener threw an exception. Continuing.", ex);
+                }
+
+            }
+        }
+    }
+
+    // Allow external scripts to initialize this library in case it's loaded after the document has loaded
+    api.init = init;
+
+    // Execute listener immediately if already initialized
+    api.addInitListener = function(listener) {
+        if (api.initialized) {
+            listener(api);
+        } else {
+            initListeners.push(listener);
+        }
+    };
+
+    var createMissingNativeApiListeners = [];
+
+    api.addCreateMissingNativeApiListener = function(listener) {
+        createMissingNativeApiListeners.push(listener);
+    };
+
+    function createMissingNativeApi(win) {
+        win = win || window;
+        init();
+
+        // Notify listeners
+        for (var i = 0, len = createMissingNativeApiListeners.length; i < len; ++i) {
+            createMissingNativeApiListeners[i](win);
+        }
+    }
+
+    api.createMissingNativeApi = createMissingNativeApi;
+
+    /**
+     * @constructor
+     */
+    function Module(name) {
+        this.name = name;
+        this.initialized = false;
+        this.supported = false;
+    }
+
+    Module.prototype.fail = function(reason) {
+        this.initialized = true;
+        this.supported = false;
+
+        throw new Error("Module '" + this.name + "' failed to load: " + reason);
+    };
+
+    Module.prototype.warn = function(msg) {
+        api.warn("Module " + this.name + ": " + msg);
+    };
+
+    Module.prototype.createError = function(msg) {
+        return new Error("Error in Rangy " + this.name + " module: " + msg);
+    };
+
+    api.createModule = function(name, initFunc) {
+        var module = new Module(name);
+        api.modules[name] = module;
+
+        moduleInitializers.push(function(api) {
+            initFunc(api, module);
+            module.initialized = true;
+            module.supported = true;
+        });
+    };
+
+    api.requireModules = function(modules) {
+        for (var i = 0, len = modules.length, module, moduleName; i < len; ++i) {
+            moduleName = modules[i];
+            module = api.modules[moduleName];
+            if (!module || !(module instanceof Module)) {
+                throw new Error("Module '" + moduleName + "' not found");
+            }
+            if (!module.supported) {
+                throw new Error("Module '" + moduleName + "' not supported");
+            }
+        }
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Wait for document to load before running tests
+
+    var docReady = false;
+
+    var loadHandler = function(e) {
+
+        if (!docReady) {
+            docReady = true;
+            if (!api.initialized) {
+                init();
+            }
+        }
+    };
+
+    // Test whether we have window and document objects that we will need
+    if (typeof window == UNDEFINED) {
+        fail("No window found");
+        return;
+    }
+    if (typeof document == UNDEFINED) {
+        fail("No document found");
+        return;
+    }
+
+    if (isHostMethod(document, "addEventListener")) {
+        document.addEventListener("DOMContentLoaded", loadHandler, false);
+    }
+
+    // Add a fallback in case the DOMContentLoaded event isn't supported
+    if (isHostMethod(window, "addEventListener")) {
+        window.addEventListener("load", loadHandler, false);
+    } else if (isHostMethod(window, "attachEvent")) {
+        window.attachEvent("onload", loadHandler);
+    } else {
+        fail("Window does not have required addEventListener or attachEvent method");
+    }
+
+    return api;
+})();
+rangy.createModule("DomUtil", function(api, module) {
+
+    var UNDEF = "undefined";
+    var util = api.util;
+
+    // Perform feature tests
+    if (!util.areHostMethods(document, ["createDocumentFragment", "createElement", "createTextNode"])) {
+        module.fail("document missing a Node creation method");
+    }
+
+    if (!util.isHostMethod(document, "getElementsByTagName")) {
+        module.fail("document missing getElementsByTagName method");
+    }
+
+    var el = document.createElement("div");
+    if (!util.areHostMethods(el, ["insertBefore", "appendChild", "cloneNode"] ||
+            !util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]))) {
+        module.fail("Incomplete Element implementation");
+    }
+
+    // innerHTML is required for Range's createContextualFragment method
+    if (!util.isHostProperty(el, "innerHTML")) {
+        module.fail("Element is missing innerHTML property");
+    }
+
+    var textNode = document.createTextNode("test");
+    if (!util.areHostMethods(textNode, ["splitText", "deleteData", "insertData", "appendData", "cloneNode"] ||
+            !util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]) ||
+            !util.areHostProperties(textNode, ["data"]))) {
+        module.fail("Incomplete Text Node implementation");
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Removed use of indexOf because of a bizarre bug in Opera that is thrown in one of the Acid3 tests. I haven't been
+    // able to replicate it outside of the test. The bug is that indexOf returns -1 when called on an Array that
+    // contains just the document as a single element and the value searched for is the document.
+    var arrayContains = /*Array.prototype.indexOf ?
+        function(arr, val) {
+            return arr.indexOf(val) > -1;
+        }:*/
+
+        function(arr, val) {
+            var i = arr.length;
+            while (i--) {
+                if (arr[i] === val) {
+                    return true;
+                }
+            }
+            return false;
+        };
+
+    // Opera 11 puts HTML elements in the null namespace, it seems, and IE 7 has undefined namespaceURI
+    function isHtmlNamespace(node) {
+        var ns;
+        return typeof node.namespaceURI == UNDEF || ((ns = node.namespaceURI) === null || ns == "http://www.w3.org/1999/xhtml");
+    }
+
+    function parentElement(node) {
+        var parent = node.parentNode;
+        return (parent.nodeType == 1) ? parent : null;
+    }
+
+    function getNodeIndex(node) {
+        var i = 0;
+        while( (node = node.previousSibling) ) {
+            i++;
+        }
+        return i;
+    }
+
+    function getNodeLength(node) {
+        var childNodes;
+        return isCharacterDataNode(node) ? node.length : ((childNodes = node.childNodes) ? childNodes.length : 0);
+    }
+
+    function getCommonAncestor(node1, node2) {
+        var ancestors = [], n;
+        for (n = node1; n; n = n.parentNode) {
+            ancestors.push(n);
+        }
+
+        for (n = node2; n; n = n.parentNode) {
+            if (arrayContains(ancestors, n)) {
+                return n;
+            }
+        }
+
+        return null;
+    }
+
+    function isAncestorOf(ancestor, descendant, selfIsAncestor) {
+        var n = selfIsAncestor ? descendant : descendant.parentNode;
+        while (n) {
+            if (n === ancestor) {
+                return true;
+            } else {
+                n = n.parentNode;
+            }
+        }
+        return false;
+    }
+
+    function getClosestAncestorIn(node, ancestor, selfIsAncestor) {
+        var p, n = selfIsAncestor ? node : node.parentNode;
+        while (n) {
+            p = n.parentNode;
+            if (p === ancestor) {
+                return n;
+            }
+            n = p;
+        }
+        return null;
+    }
+
+    function isCharacterDataNode(node) {
+        var t = node.nodeType;
+        return t == 3 || t == 4 || t == 8 ; // Text, CDataSection or Comment
+    }
+
+    function insertAfter(node, precedingNode) {
+        var nextNode = precedingNode.nextSibling, parent = precedingNode.parentNode;
+        if (nextNode) {
+            parent.insertBefore(node, nextNode);
+        } else {
+            parent.appendChild(node);
+        }
+        return node;
+    }
+
+    // Note that we cannot use splitText() because it is bugridden in IE 9.
+    function splitDataNode(node, index) {
+        var newNode = node.cloneNode(false);
+        newNode.deleteData(0, index);
+        node.deleteData(index, node.length - index);
+        insertAfter(newNode, node);
+        return newNode;
+    }
+
+    function getDocument(node) {
+        if (node.nodeType == 9) {
+            return node;
+        } else if (typeof node.ownerDocument != UNDEF) {
+            return node.ownerDocument;
+        } else if (typeof node.document != UNDEF) {
+            return node.document;
+        } else if (node.parentNode) {
+            return getDocument(node.parentNode);
+        } else {
+            throw new Error("getDocument: no document found for node");
+        }
+    }
+
+    function getWindow(node) {
+        var doc = getDocument(node);
+        if (typeof doc.defaultView != UNDEF) {
+            return doc.defaultView;
+        } else if (typeof doc.parentWindow != UNDEF) {
+            return doc.parentWindow;
+        } else {
+            throw new Error("Cannot get a window object for node");
+        }
+    }
+
+    function getIframeDocument(iframeEl) {
+        if (typeof iframeEl.contentDocument != UNDEF) {
+            return iframeEl.contentDocument;
+        } else if (typeof iframeEl.contentWindow != UNDEF) {
+            return iframeEl.contentWindow.document;
+        } else {
+            throw new Error("getIframeWindow: No Document object found for iframe element");
+        }
+    }
+
+    function getIframeWindow(iframeEl) {
+        if (typeof iframeEl.contentWindow != UNDEF) {
+            return iframeEl.contentWindow;
+        } else if (typeof iframeEl.contentDocument != UNDEF) {
+            return iframeEl.contentDocument.defaultView;
+        } else {
+            throw new Error("getIframeWindow: No Window object found for iframe element");
+        }
+    }
+
+    function getBody(doc) {
+        return util.isHostObject(doc, "body") ? doc.body : doc.getElementsByTagName("body")[0];
+    }
+
+    function getRootContainer(node) {
+        var parent;
+        while ( (parent = node.parentNode) ) {
+            node = parent;
+        }
+        return node;
+    }
+
+    function comparePoints(nodeA, offsetA, nodeB, offsetB) {
+        // See http://www.w3.org/TR/DOM-Level-2-Traversal-Range/ranges.html#Level-2-Range-Comparing
+        var nodeC, root, childA, childB, n;
+        if (nodeA == nodeB) {
+
+            // Case 1: nodes are the same
+            return offsetA === offsetB ? 0 : (offsetA < offsetB) ? -1 : 1;
+        } else if ( (nodeC = getClosestAncestorIn(nodeB, nodeA, true)) ) {
+
+            // Case 2: node C (container B or an ancestor) is a child node of A
+            return offsetA <= getNodeIndex(nodeC) ? -1 : 1;
+        } else if ( (nodeC = getClosestAncestorIn(nodeA, nodeB, true)) ) {
+
+            // Case 3: node C (container A or an ancestor) is a child node of B
+            return getNodeIndex(nodeC) < offsetB  ? -1 : 1;
+        } else {
+
+            // Case 4: containers are siblings or descendants of siblings
+            root = getCommonAncestor(nodeA, nodeB);
+            childA = (nodeA === root) ? root : getClosestAncestorIn(nodeA, root, true);
+            childB = (nodeB === root) ? root : getClosestAncestorIn(nodeB, root, true);
+
+            if (childA === childB) {
+                // This shouldn't be possible
+
+                throw new Error("comparePoints got to case 4 and childA and childB are the same!");
+            } else {
+                n = root.firstChild;
+                while (n) {
+                    if (n === childA) {
+                        return -1;
+                    } else if (n === childB) {
+                        return 1;
+                    }
+                    n = n.nextSibling;
+                }
+                throw new Error("Should not be here!");
+            }
+        }
+    }
+
+    function fragmentFromNodeChildren(node) {
+        var fragment = getDocument(node).createDocumentFragment(), child;
+        while ( (child = node.firstChild) ) {
+            fragment.appendChild(child);
+        }
+        return fragment;
+    }
+
+    function inspectNode(node) {
+        if (!node) {
+            return "[No node]";
+        }
+        if (isCharacterDataNode(node)) {
+            return '"' + node.data + '"';
+        } else if (node.nodeType == 1) {
+            var idAttr = node.id ? ' id="' + node.id + '"' : "";
+            return "<" + node.nodeName + idAttr + ">[" + node.childNodes.length + "]";
+        } else {
+            return node.nodeName;
+        }
+    }
+
+    /**
+     * @constructor
+     */
+    function NodeIterator(root) {
+        this.root = root;
+        this._next = root;
+    }
+
+    NodeIterator.prototype = {
+        _current: null,
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            var n = this._current = this._next;
+            var child, next;
+            if (this._current) {
+                child = n.firstChild;
+                if (child) {
+                    this._next = child;
+                } else {
+                    next = null;
+                    while ((n !== this.root) && !(next = n.nextSibling)) {
+                        n = n.parentNode;
+                    }
+                    this._next = next;
+                }
+            }
+            return this._current;
+        },
+
+        detach: function() {
+            this._current = this._next = this.root = null;
+        }
+    };
+
+    function createIterator(root) {
+        return new NodeIterator(root);
+    }
+
+    /**
+     * @constructor
+     */
+    function DomPosition(node, offset) {
+        this.node = node;
+        this.offset = offset;
+    }
+
+    DomPosition.prototype = {
+        equals: function(pos) {
+            return this.node === pos.node & this.offset == pos.offset;
+        },
+
+        inspect: function() {
+            return "[DomPosition(" + inspectNode(this.node) + ":" + this.offset + ")]";
+        }
+    };
+
+    /**
+     * @constructor
+     */
+    function DOMException(codeName) {
+        this.code = this[codeName];
+        this.codeName = codeName;
+        this.message = "DOMException: " + this.codeName;
+    }
+
+    DOMException.prototype = {
+        INDEX_SIZE_ERR: 1,
+        HIERARCHY_REQUEST_ERR: 3,
+        WRONG_DOCUMENT_ERR: 4,
+        NO_MODIFICATION_ALLOWED_ERR: 7,
+        NOT_FOUND_ERR: 8,
+        NOT_SUPPORTED_ERR: 9,
+        INVALID_STATE_ERR: 11
+    };
+
+    DOMException.prototype.toString = function() {
+        return this.message;
+    };
+
+    api.dom = {
+        arrayContains: arrayContains,
+        isHtmlNamespace: isHtmlNamespace,
+        parentElement: parentElement,
+        getNodeIndex: getNodeIndex,
+        getNodeLength: getNodeLength,
+        getCommonAncestor: getCommonAncestor,
+        isAncestorOf: isAncestorOf,
+        getClosestAncestorIn: getClosestAncestorIn,
+        isCharacterDataNode: isCharacterDataNode,
+        insertAfter: insertAfter,
+        splitDataNode: splitDataNode,
+        getDocument: getDocument,
+        getWindow: getWindow,
+        getIframeWindow: getIframeWindow,
+        getIframeDocument: getIframeDocument,
+        getBody: getBody,
+        getRootContainer: getRootContainer,
+        comparePoints: comparePoints,
+        inspectNode: inspectNode,
+        fragmentFromNodeChildren: fragmentFromNodeChildren,
+        createIterator: createIterator,
+        DomPosition: DomPosition
+    };
+
+    api.DOMException = DOMException;
+});rangy.createModule("DomRange", function(api, module) {
+    api.requireModules( ["DomUtil"] );
+
+
+    var dom = api.dom;
+    var DomPosition = dom.DomPosition;
+    var DOMException = api.DOMException;
+    
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Utility functions
+
+    function isNonTextPartiallySelected(node, range) {
+        return (node.nodeType != 3) &&
+               (dom.isAncestorOf(node, range.startContainer, true) || dom.isAncestorOf(node, range.endContainer, true));
+    }
+
+    function getRangeDocument(range) {
+        return dom.getDocument(range.startContainer);
+    }
+
+    function dispatchEvent(range, type, args) {
+        var listeners = range._listeners[type];
+        if (listeners) {
+            for (var i = 0, len = listeners.length; i < len; ++i) {
+                listeners[i].call(range, {target: range, args: args});
+            }
+        }
+    }
+
+    function getBoundaryBeforeNode(node) {
+        return new DomPosition(node.parentNode, dom.getNodeIndex(node));
+    }
+
+    function getBoundaryAfterNode(node) {
+        return new DomPosition(node.parentNode, dom.getNodeIndex(node) + 1);
+    }
+
+    function insertNodeAtPosition(node, n, o) {
+        var firstNodeInserted = node.nodeType == 11 ? node.firstChild : node;
+        if (dom.isCharacterDataNode(n)) {
+            if (o == n.length) {
+                dom.insertAfter(node, n);
+            } else {
+                n.parentNode.insertBefore(node, o == 0 ? n : dom.splitDataNode(n, o));
+            }
+        } else if (o >= n.childNodes.length) {
+            n.appendChild(node);
+        } else {
+            n.insertBefore(node, n.childNodes[o]);
+        }
+        return firstNodeInserted;
+    }
+
+    function cloneSubtree(iterator) {
+        var partiallySelected;
+        for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {
+            partiallySelected = iterator.isPartiallySelectedSubtree();
+
+            node = node.cloneNode(!partiallySelected);
+            if (partiallySelected) {
+                subIterator = iterator.getSubtreeIterator();
+                node.appendChild(cloneSubtree(subIterator));
+                subIterator.detach(true);
+            }
+
+            if (node.nodeType == 10) { // DocumentType
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+            frag.appendChild(node);
+        }
+        return frag;
+    }
+
+    function iterateSubtree(rangeIterator, func, iteratorState) {
+        var it, n;
+        iteratorState = iteratorState || { stop: false };
+        for (var node, subRangeIterator; node = rangeIterator.next(); ) {
+            //log.debug("iterateSubtree, partially selected: " + rangeIterator.isPartiallySelectedSubtree(), nodeToString(node));
+            if (rangeIterator.isPartiallySelectedSubtree()) {
+                // The node is partially selected by the Range, so we can use a new RangeIterator on the portion of the
+                // node selected by the Range.
+                if (func(node) === false) {
+                    iteratorState.stop = true;
+                    return;
+                } else {
+                    subRangeIterator = rangeIterator.getSubtreeIterator();
+                    iterateSubtree(subRangeIterator, func, iteratorState);
+                    subRangeIterator.detach(true);
+                    if (iteratorState.stop) {
+                        return;
+                    }
+                }
+            } else {
+                // The whole node is selected, so we can use efficient DOM iteration to iterate over the node and its
+                // descendant
+                it = dom.createIterator(node);
+                while ( (n = it.next()) ) {
+                    if (func(n) === false) {
+                        iteratorState.stop = true;
+                        return;
+                    }
+                }
+            }
+        }
+    }
+
+    function deleteSubtree(iterator) {
+        var subIterator;
+        while (iterator.next()) {
+            if (iterator.isPartiallySelectedSubtree()) {
+                subIterator = iterator.getSubtreeIterator();
+                deleteSubtree(subIterator);
+                subIterator.detach(true);
+            } else {
+                iterator.remove();
+            }
+        }
+    }
+
+    function extractSubtree(iterator) {
+
+        for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {
+
+
+            if (iterator.isPartiallySelectedSubtree()) {
+                node = node.cloneNode(false);
+                subIterator = iterator.getSubtreeIterator();
+                node.appendChild(extractSubtree(subIterator));
+                subIterator.detach(true);
+            } else {
+                iterator.remove();
+            }
+            if (node.nodeType == 10) { // DocumentType
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+            frag.appendChild(node);
+        }
+        return frag;
+    }
+
+    function getNodesInRange(range, nodeTypes, filter) {
+        //log.info("getNodesInRange, " + nodeTypes.join(","));
+        var filterNodeTypes = !!(nodeTypes && nodeTypes.length), regex;
+        var filterExists = !!filter;
+        if (filterNodeTypes) {
+            regex = new RegExp("^(" + nodeTypes.join("|") + ")$");
+        }
+
+        var nodes = [];
+        iterateSubtree(new RangeIterator(range, false), function(node) {
+            if ((!filterNodeTypes || regex.test(node.nodeType)) && (!filterExists || filter(node))) {
+                nodes.push(node);
+            }
+        });
+        return nodes;
+    }
+
+    function inspect(range) {
+        var name = (typeof range.getName == "undefined") ? "Range" : range.getName();
+        return "[" + name + "(" + dom.inspectNode(range.startContainer) + ":" + range.startOffset + ", " +
+                dom.inspectNode(range.endContainer) + ":" + range.endOffset + ")]";
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // RangeIterator code partially borrows from IERange by Tim Ryan (http://github.com/timcameronryan/IERange)
+
+    /**
+     * @constructor
+     */
+    function RangeIterator(range, clonePartiallySelectedTextNodes) {
+        this.range = range;
+        this.clonePartiallySelectedTextNodes = clonePartiallySelectedTextNodes;
+
+
+
+        if (!range.collapsed) {
+            this.sc = range.startContainer;
+            this.so = range.startOffset;
+            this.ec = range.endContainer;
+            this.eo = range.endOffset;
+            var root = range.commonAncestorContainer;
+
+            if (this.sc === this.ec && dom.isCharacterDataNode(this.sc)) {
+                this.isSingleCharacterDataNode = true;
+                this._first = this._last = this._next = this.sc;
+            } else {
+                this._first = this._next = (this.sc === root && !dom.isCharacterDataNode(this.sc)) ?
+                    this.sc.childNodes[this.so] : dom.getClosestAncestorIn(this.sc, root, true);
+                this._last = (this.ec === root && !dom.isCharacterDataNode(this.ec)) ?
+                    this.ec.childNodes[this.eo - 1] : dom.getClosestAncestorIn(this.ec, root, true);
+            }
+
+        }
+    }
+
+    RangeIterator.prototype = {
+        _current: null,
+        _next: null,
+        _first: null,
+        _last: null,
+        isSingleCharacterDataNode: false,
+
+        reset: function() {
+            this._current = null;
+            this._next = this._first;
+        },
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            // Move to next node
+            var current = this._current = this._next;
+            if (current) {
+                this._next = (current !== this._last) ? current.nextSibling : null;
+
+                // Check for partially selected text nodes
+                if (dom.isCharacterDataNode(current) && this.clonePartiallySelectedTextNodes) {
+                    if (current === this.ec) {
+
+                        (current = current.cloneNode(true)).deleteData(this.eo, current.length - this.eo);
+                    }
+                    if (this._current === this.sc) {
+
+                        (current = current.cloneNode(true)).deleteData(0, this.so);
+                    }
+                }
+            }
+
+            return current;
+        },
+
+        remove: function() {
+            var current = this._current, start, end;
+
+            if (dom.isCharacterDataNode(current) && (current === this.sc || current === this.ec)) {
+                start = (current === this.sc) ? this.so : 0;
+                end = (current === this.ec) ? this.eo : current.length;
+                if (start != end) {
+                    current.deleteData(start, end - start);
+                }
+            } else {
+                if (current.parentNode) {
+                    current.parentNode.removeChild(current);
+                } else {
+
+                }
+            }
+        },
+
+        // Checks if the current node is partially selected
+        isPartiallySelectedSubtree: function() {
+            var current = this._current;
+            return isNonTextPartiallySelected(current, this.range);
+        },
+
+        getSubtreeIterator: function() {
+            var subRange;
+            if (this.isSingleCharacterDataNode) {
+                subRange = this.range.cloneRange();
+                subRange.collapse();
+            } else {
+                subRange = new Range(getRangeDocument(this.range));
+                var current = this._current;
+                var startContainer = current, startOffset = 0, endContainer = current, endOffset = dom.getNodeLength(current);
+
+                if (dom.isAncestorOf(current, this.sc, true)) {
+                    startContainer = this.sc;
+                    startOffset = this.so;
+                }
+                if (dom.isAncestorOf(current, this.ec, true)) {
+                    endContainer = this.ec;
+                    endOffset = this.eo;
+                }
+
+                updateBoundaries(subRange, startContainer, startOffset, endContainer, endOffset);
+            }
+            return new RangeIterator(subRange, this.clonePartiallySelectedTextNodes);
+        },
+
+        detach: function(detachRange) {
+            if (detachRange) {
+                this.range.detach();
+            }
+            this.range = this._current = this._next = this._first = this._last = this.sc = this.so = this.ec = this.eo = null;
+        }
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Exceptions
+
+    /**
+     * @constructor
+     */
+    function RangeException(codeName) {
+        this.code = this[codeName];
+        this.codeName = codeName;
+        this.message = "RangeException: " + this.codeName;
+    }
+
+    RangeException.prototype = {
+        BAD_BOUNDARYPOINTS_ERR: 1,
+        INVALID_NODE_TYPE_ERR: 2
+    };
+
+    RangeException.prototype.toString = function() {
+        return this.message;
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    /**
+     * Currently iterates through all nodes in the range on creation until I think of a decent way to do it
+     * TODO: Look into making this a proper iterator, not requiring preloading everything first
+     * @constructor
+     */
+    function RangeNodeIterator(range, nodeTypes, filter) {
+        this.nodes = getNodesInRange(range, nodeTypes, filter);
+        this._next = this.nodes[0];
+        this._position = 0;
+    }
+
+    RangeNodeIterator.prototype = {
+        _current: null,
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            this._current = this._next;
+            this._next = this.nodes[ ++this._position ];
+            return this._current;
+        },
+
+        detach: function() {
+            this._current = this._next = this.nodes = null;
+        }
+    };
+
+    var beforeAfterNodeTypes = [1, 3, 4, 5, 7, 8, 10];
+    var rootContainerNodeTypes = [2, 9, 11];
+    var readonlyNodeTypes = [5, 6, 10, 12];
+    var insertableNodeTypes = [1, 3, 4, 5, 7, 8, 10, 11];
+    var surroundNodeTypes = [1, 3, 4, 5, 7, 8];
+
+    function createAncestorFinder(nodeTypes) {
+        return function(node, selfIsAncestor) {
+            var t, n = selfIsAncestor ? node : node.parentNode;
+            while (n) {
+                t = n.nodeType;
+                if (dom.arrayContains(nodeTypes, t)) {
+                    return n;
+                }
+                n = n.parentNode;
+            }
+            return null;
+        };
+    }
+
+    var getRootContainer = dom.getRootContainer;
+    var getDocumentOrFragmentContainer = createAncestorFinder( [9, 11] );
+    var getReadonlyAncestor = createAncestorFinder(readonlyNodeTypes);
+    var getDocTypeNotationEntityAncestor = createAncestorFinder( [6, 10, 12] );
+
+    function assertNoDocTypeNotationEntityAncestor(node, allowSelf) {
+        if (getDocTypeNotationEntityAncestor(node, allowSelf)) {
+            throw new RangeException("INVALID_NODE_TYPE_ERR");
+        }
+    }
+
+    function assertNotDetached(range) {
+        if (!range.startContainer) {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    }
+
+    function assertValidNodeType(node, invalidTypes) {
+        if (!dom.arrayContains(invalidTypes, node.nodeType)) {
+            throw new RangeException("INVALID_NODE_TYPE_ERR");
+        }
+    }
+
+    function assertValidOffset(node, offset) {
+        if (offset < 0 || offset > (dom.isCharacterDataNode(node) ? node.length : node.childNodes.length)) {
+            throw new DOMException("INDEX_SIZE_ERR");
+        }
+    }
+
+    function assertSameDocumentOrFragment(node1, node2) {
+        if (getDocumentOrFragmentContainer(node1, true) !== getDocumentOrFragmentContainer(node2, true)) {
+            throw new DOMException("WRONG_DOCUMENT_ERR");
+        }
+    }
+
+    function assertNodeNotReadOnly(node) {
+        if (getReadonlyAncestor(node, true)) {
+            throw new DOMException("NO_MODIFICATION_ALLOWED_ERR");
+        }
+    }
+
+    function assertNode(node, codeName) {
+        if (!node) {
+            throw new DOMException(codeName);
+        }
+    }
+
+    function isOrphan(node) {
+        return !dom.arrayContains(rootContainerNodeTypes, node.nodeType) && !getDocumentOrFragmentContainer(node, true);
+    }
+
+    function isValidOffset(node, offset) {
+        return offset <= (dom.isCharacterDataNode(node) ? node.length : node.childNodes.length);
+    }
+
+    function isRangeValid(range) {
+        return (!!range.startContainer && !!range.endContainer
+                && !isOrphan(range.startContainer)
+                && !isOrphan(range.endContainer)
+                && isValidOffset(range.startContainer, range.startOffset)
+                && isValidOffset(range.endContainer, range.endOffset));
+    }
+
+    function assertRangeValid(range) {
+        assertNotDetached(range);
+        if (!isRangeValid(range)) {
+            throw new Error("Range error: Range is no longer valid after DOM mutation (" + range.inspect() + ")");
+        }
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Test the browser's innerHTML support to decide how to implement createContextualFragment
+    var styleEl = document.createElement("style");
+    var htmlParsingConforms = false;
+    try {
+        styleEl.innerHTML = "<b>x</b>";
+        htmlParsingConforms = (styleEl.firstChild.nodeType == 3); // Opera incorrectly creates an element node
+    } catch (e) {
+        // IE 6 and 7 throw
+    }
+
+    api.features.htmlParsingConforms = htmlParsingConforms;
+
+    var createContextualFragment = htmlParsingConforms ?
+
+        // Implementation as per HTML parsing spec, trusting in the browser's implementation of innerHTML. See
+        // discussion and base code for this implementation at issue 67.
+        // Spec: http://html5.org/specs/dom-parsing.html#extensions-to-the-range-interface
+        // Thanks to Aleks Williams.
+        function(fragmentStr) {
+            // "Let node the context object's start's node."
+            var node = this.startContainer;
+            var doc = dom.getDocument(node);
+
+            // "If the context object's start's node is null, raise an INVALID_STATE_ERR
+            // exception and abort these steps."
+            if (!node) {
+                throw new DOMException("INVALID_STATE_ERR");
+            }
+
+            // "Let element be as follows, depending on node's interface:"
+            // Document, Document Fragment: null
+            var el = null;
+
+            // "Element: node"
+            if (node.nodeType == 1) {
+                el = node;
+
+            // "Text, Comment: node's parentElement"
+            } else if (dom.isCharacterDataNode(node)) {
+                el = dom.parentElement(node);
+            }
+
+            // "If either element is null or element's ownerDocument is an HTML document
+            // and element's local name is "html" and element's namespace is the HTML
+            // namespace"
+            if (el === null || (
+                el.nodeName == "HTML"
+                && dom.isHtmlNamespace(dom.getDocument(el).documentElement)
+                && dom.isHtmlNamespace(el)
+            )) {
+
+            // "let element be a new Element with "body" as its local name and the HTML
+            // namespace as its namespace.""
+                el = doc.createElement("body");
+            } else {
+                el = el.cloneNode(false);
+            }
+
+            // "If the node's document is an HTML document: Invoke the HTML fragment parsing algorithm."
+            // "If the node's document is an XML document: Invoke the XML fragment parsing algorithm."
+            // "In either case, the algorithm must be invoked with fragment as the input
+            // and element as the context element."
+            el.innerHTML = fragmentStr;
+
+            // "If this raises an exception, then abort these steps. Otherwise, let new
+            // children be the nodes returned."
+
+            // "Let fragment be a new DocumentFragment."
+            // "Append all new children to fragment."
+            // "Return fragment."
+            return dom.fragmentFromNodeChildren(el);
+        } :
+
+        // In this case, innerHTML cannot be trusted, so fall back to a simpler, non-conformant implementation that
+        // previous versions of Rangy used (with the exception of using a body element rather than a div)
+        function(fragmentStr) {
+            assertNotDetached(this);
+            var doc = getRangeDocument(this);
+            var el = doc.createElement("body");
+            el.innerHTML = fragmentStr;
+
+            return dom.fragmentFromNodeChildren(el);
+        };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    var rangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
+        "commonAncestorContainer"];
+
+    var s2s = 0, s2e = 1, e2e = 2, e2s = 3;
+    var n_b = 0, n_a = 1, n_b_a = 2, n_i = 3;
+
+    function RangePrototype() {}
+
+    RangePrototype.prototype = {
+        attachListener: function(type, listener) {
+            this._listeners[type].push(listener);
+        },
+
+        compareBoundaryPoints: function(how, range) {
+            assertRangeValid(this);
+            assertSameDocumentOrFragment(this.startContainer, range.startContainer);
+
+            var nodeA, offsetA, nodeB, offsetB;
+            var prefixA = (how == e2s || how == s2s) ? "start" : "end";
+            var prefixB = (how == s2e || how == s2s) ? "start" : "end";
+            nodeA = this[prefixA + "Container"];
+            offsetA = this[prefixA + "Offset"];
+            nodeB = range[prefixB + "Container"];
+            offsetB = range[prefixB + "Offset"];
+            return dom.comparePoints(nodeA, offsetA, nodeB, offsetB);
+        },
+
+        insertNode: function(node) {
+            assertRangeValid(this);
+            assertValidNodeType(node, insertableNodeTypes);
+            assertNodeNotReadOnly(this.startContainer);
+
+            if (dom.isAncestorOf(node, this.startContainer, true)) {
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+
+            // No check for whether the container of the start of the Range is of a type that does not allow
+            // children of the type of node: the browser's DOM implementation should do this for us when we attempt
+            // to add the node
+
+            var firstNodeInserted = insertNodeAtPosition(node, this.startContainer, this.startOffset);
+            this.setStartBefore(firstNodeInserted);
+        },
+
+        cloneContents: function() {
+            assertRangeValid(this);
+
+            var clone, frag;
+            if (this.collapsed) {
+                return getRangeDocument(this).createDocumentFragment();
+            } else {
+                if (this.startContainer === this.endContainer && dom.isCharacterDataNode(this.startContainer)) {
+                    clone = this.startContainer.cloneNode(true);
+                    clone.data = clone.data.slice(this.startOffset, this.endOffset);
+                    frag = getRangeDocument(this).createDocumentFragment();
+                    frag.appendChild(clone);
+                    return frag;
+                } else {
+                    var iterator = new RangeIterator(this, true);
+                    clone = cloneSubtree(iterator);
+                    iterator.detach();
+                }
+                return clone;
+            }
+        },
+
+        canSurroundContents: function() {
+            assertRangeValid(this);
+            assertNodeNotReadOnly(this.startContainer);
+            assertNodeNotReadOnly(this.endContainer);
+
+            // Check if the contents can be surrounded. Specifically, this means whether the range partially selects
+            // no non-text nodes.
+            var iterator = new RangeIterator(this, true);
+            var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
+                    (iterator._last && isNonTextPartiallySelected(iterator._last, this)));
+            iterator.detach();
+            return !boundariesInvalid;
+        },
+
+        surroundContents: function(node) {
+            assertValidNodeType(node, surroundNodeTypes);
+
+            if (!this.canSurroundContents()) {
+                throw new RangeException("BAD_BOUNDARYPOINTS_ERR");
+            }
+
+            // Extract the contents
+            var content = this.extractContents();
+
+            // Clear the children of the node
+            if (node.hasChildNodes()) {
+                while (node.lastChild) {
+                    node.removeChild(node.lastChild);
+                }
+            }
+
+            // Insert the new node and add the extracted contents
+            insertNodeAtPosition(node, this.startContainer, this.startOffset);
+            node.appendChild(content);
+
+            this.selectNode(node);
+        },
+
+        cloneRange: function() {
+            assertRangeValid(this);
+            var range = new Range(getRangeDocument(this));
+            var i = rangeProperties.length, prop;
+            while (i--) {
+                prop = rangeProperties[i];
+                range[prop] = this[prop];
+            }
+            return range;
+        },
+
+        toString: function() {
+            assertRangeValid(this);
+            var sc = this.startContainer;
+            if (sc === this.endContainer && dom.isCharacterDataNode(sc)) {
+                return (sc.nodeType == 3 || sc.nodeType == 4) ? sc.data.slice(this.startOffset, this.endOffset) : "";
+            } else {
+                var textBits = [], iterator = new RangeIterator(this, true);
+
+                iterateSubtree(iterator, function(node) {
+                    // Accept only text or CDATA nodes, not comments
+
+                    if (node.nodeType == 3 || node.nodeType == 4) {
+                        textBits.push(node.data);
+                    }
+                });
+                iterator.detach();
+                return textBits.join("");
+            }
+        },
+
+        // The methods below are all non-standard. The following batch were introduced by Mozilla but have since
+        // been removed from Mozilla.
+
+        compareNode: function(node) {
+            assertRangeValid(this);
+
+            var parent = node.parentNode;
+            var nodeIndex = dom.getNodeIndex(node);
+
+            if (!parent) {
+                throw new DOMException("NOT_FOUND_ERR");
+            }
+
+            var startComparison = this.comparePoint(parent, nodeIndex),
+                endComparison = this.comparePoint(parent, nodeIndex + 1);
+
+            if (startComparison < 0) { // Node starts before
+                return (endComparison > 0) ? n_b_a : n_b;
+            } else {
+                return (endComparison > 0) ? n_a : n_i;
+            }
+        },
+
+        comparePoint: function(node, offset) {
+            assertRangeValid(this);
+            assertNode(node, "HIERARCHY_REQUEST_ERR");
+            assertSameDocumentOrFragment(node, this.startContainer);
+
+            if (dom.comparePoints(node, offset, this.startContainer, this.startOffset) < 0) {
+                return -1;
+            } else if (dom.comparePoints(node, offset, this.endContainer, this.endOffset) > 0) {
+                return 1;
+            }
+            return 0;
+        },
+
+        createContextualFragment: createContextualFragment,
+
+        toHtml: function() {
+            assertRangeValid(this);
+            var container = getRangeDocument(this).createElement("div");
+            container.appendChild(this.cloneContents());
+            return container.innerHTML;
+        },
+
+        // touchingIsIntersecting determines whether this method considers a node that borders a range intersects
+        // with it (as in WebKit) or not (as in Gecko pre-1.9, and the default)
+        intersectsNode: function(node, touchingIsIntersecting) {
+            assertRangeValid(this);
+            assertNode(node, "NOT_FOUND_ERR");
+            if (dom.getDocument(node) !== getRangeDocument(this)) {
+                return false;
+            }
+
+            var parent = node.parentNode, offset = dom.getNodeIndex(node);
+            assertNode(parent, "NOT_FOUND_ERR");
+
+            var startComparison = dom.comparePoints(parent, offset, this.endContainer, this.endOffset),
+                endComparison = dom.comparePoints(parent, offset + 1, this.startContainer, this.startOffset);
+
+            return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
+        },
+
+
+        isPointInRange: function(node, offset) {
+            assertRangeValid(this);
+            assertNode(node, "HIERARCHY_REQUEST_ERR");
+            assertSameDocumentOrFragment(node, this.startContainer);
+
+            return (dom.comparePoints(node, offset, this.startContainer, this.startOffset) >= 0) &&
+                   (dom.comparePoints(node, offset, this.endContainer, this.endOffset) <= 0);
+        },
+
+        // The methods below are non-standard and invented by me.
+
+        // Sharing a boundary start-to-end or end-to-start does not count as intersection.
+        intersectsRange: function(range, touchingIsIntersecting) {
+            assertRangeValid(this);
+
+            if (getRangeDocument(range) != getRangeDocument(this)) {
+                throw new DOMException("WRONG_DOCUMENT_ERR");
+            }
+
+            var startComparison = dom.comparePoints(this.startContainer, this.startOffset, range.endContainer, range.endOffset),
+                endComparison = dom.comparePoints(this.endContainer, this.endOffset, range.startContainer, range.startOffset);
+
+            return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
+        },
+
+        intersection: function(range) {
+            if (this.intersectsRange(range)) {
+                var startComparison = dom.comparePoints(this.startContainer, this.startOffset, range.startContainer, range.startOffset),
+                    endComparison = dom.comparePoints(this.endContainer, this.endOffset, range.endContainer, range.endOffset);
+
+                var intersectionRange = this.cloneRange();
+
+                if (startComparison == -1) {
+                    intersectionRange.setStart(range.startContainer, range.startOffset);
+                }
+                if (endComparison == 1) {
+                    intersectionRange.setEnd(range.endContainer, range.endOffset);
+                }
+                return intersectionRange;
+            }
+            return null;
+        },
+
+        union: function(range) {
+            if (this.intersectsRange(range, true)) {
+                var unionRange = this.cloneRange();
+                if (dom.comparePoints(range.startContainer, range.startOffset, this.startContainer, this.startOffset) == -1) {
+                    unionRange.setStart(range.startContainer, range.startOffset);
+                }
+                if (dom.comparePoints(range.endContainer, range.endOffset, this.endContainer, this.endOffset) == 1) {
+                    unionRange.setEnd(range.endContainer, range.endOffset);
+                }
+                return unionRange;
+            } else {
+                throw new RangeException("Ranges do not intersect");
+            }
+        },
+
+        containsNode: function(node, allowPartial) {
+            if (allowPartial) {
+                return this.intersectsNode(node, false);
+            } else {
+                return this.compareNode(node) == n_i;
+            }
+        },
+
+        containsNodeContents: function(node) {
+            return this.comparePoint(node, 0) >= 0 && this.comparePoint(node, dom.getNodeLength(node)) <= 0;
+        },
+
+        containsRange: function(range) {
+            return this.intersection(range).equals(range);
+        },
+
+        containsNodeText: function(node) {
+            var nodeRange = this.cloneRange();
+            nodeRange.selectNode(node);
+            var textNodes = nodeRange.getNodes([3]);
+            if (textNodes.length > 0) {
+                nodeRange.setStart(textNodes[0], 0);
+                var lastTextNode = textNodes.pop();
+                nodeRange.setEnd(lastTextNode, lastTextNode.length);
+                var contains = this.containsRange(nodeRange);
+                nodeRange.detach();
+                return contains;
+            } else {
+                return this.containsNodeContents(node);
+            }
+        },
+
+        createNodeIterator: function(nodeTypes, filter) {
+            assertRangeValid(this);
+            return new RangeNodeIterator(this, nodeTypes, filter);
+        },
+
+        getNodes: function(nodeTypes, filter) {
+            assertRangeValid(this);
+            return getNodesInRange(this, nodeTypes, filter);
+        },
+
+        getDocument: function() {
+            return getRangeDocument(this);
+        },
+
+        collapseBefore: function(node) {
+            assertNotDetached(this);
+
+            this.setEndBefore(node);
+            this.collapse(false);
+        },
+
+        collapseAfter: function(node) {
+            assertNotDetached(this);
+
+            this.setStartAfter(node);
+            this.collapse(true);
+        },
+
+        getName: function() {
+            return "DomRange";
+        },
+
+        equals: function(range) {
+            return Range.rangesEqual(this, range);
+        },
+
+        isValid: function() {
+            return isRangeValid(this);
+        },
+
+        inspect: function() {
+            return inspect(this);
+        }
+    };
+
+    function copyComparisonConstantsToObject(obj) {
+        obj.START_TO_START = s2s;
+        obj.START_TO_END = s2e;
+        obj.END_TO_END = e2e;
+        obj.END_TO_START = e2s;
+
+        obj.NODE_BEFORE = n_b;
+        obj.NODE_AFTER = n_a;
+        obj.NODE_BEFORE_AND_AFTER = n_b_a;
+        obj.NODE_INSIDE = n_i;
+    }
+
+    function copyComparisonConstants(constructor) {
+        copyComparisonConstantsToObject(constructor);
+        copyComparisonConstantsToObject(constructor.prototype);
+    }
+
+    function createRangeContentRemover(remover, boundaryUpdater) {
+        return function() {
+            assertRangeValid(this);
+
+            var sc = this.startContainer, so = this.startOffset, root = this.commonAncestorContainer;
+
+            var iterator = new RangeIterator(this, true);
+
+            // Work out where to position the range after content removal
+            var node, boundary;
+            if (sc !== root) {
+                node = dom.getClosestAncestorIn(sc, root, true);
+                boundary = getBoundaryAfterNode(node);
+                sc = boundary.node;
+                so = boundary.offset;
+            }
+
+            // Check none of the range is read-only
+            iterateSubtree(iterator, assertNodeNotReadOnly);
+
+            iterator.reset();
+
+            // Remove the content
+            var returnValue = remover(iterator);
+            iterator.detach();
+
+            // Move to the new position
+            boundaryUpdater(this, sc, so, sc, so);
+
+            return returnValue;
+        };
+    }
+
+    function createPrototypeRange(constructor, boundaryUpdater, detacher) {
+        function createBeforeAfterNodeSetter(isBefore, isStart) {
+            return function(node) {
+                assertNotDetached(this);
+                assertValidNodeType(node, beforeAfterNodeTypes);
+                assertValidNodeType(getRootContainer(node), rootContainerNodeTypes);
+
+                var boundary = (isBefore ? getBoundaryBeforeNode : getBoundaryAfterNode)(node);
+                (isStart ? setRangeStart : setRangeEnd)(this, boundary.node, boundary.offset);
+            };
+        }
+
+        function setRangeStart(range, node, offset) {
+            var ec = range.endContainer, eo = range.endOffset;
+            if (node !== range.startContainer || offset !== range.startOffset) {
+                // Check the root containers of the range and the new boundary, and also check whether the new boundary
+                // is after the current end. In either case, collapse the range to the new position
+                if (getRootContainer(node) != getRootContainer(ec) || dom.comparePoints(node, offset, ec, eo) == 1) {
+                    ec = node;
+                    eo = offset;
+                }
+                boundaryUpdater(range, node, offset, ec, eo);
+            }
+        }
+
+        function setRangeEnd(range, node, offset) {
+            var sc = range.startContainer, so = range.startOffset;
+            if (node !== range.endContainer || offset !== range.endOffset) {
+                // Check the root containers of the range and the new boundary, and also check whether the new boundary
+                // is after the current end. In either case, collapse the range to the new position
+                if (getRootContainer(node) != getRootContainer(sc) || dom.comparePoints(node, offset, sc, so) == -1) {
+                    sc = node;
+                    so = offset;
+                }
+                boundaryUpdater(range, sc, so, node, offset);
+            }
+        }
+
+        function setRangeStartAndEnd(range, node, offset) {
+            if (node !== range.startContainer || offset !== range.startOffset || node !== range.endContainer || offset !== range.endOffset) {
+                boundaryUpdater(range, node, offset, node, offset);
+            }
+        }
+
+        constructor.prototype = new RangePrototype();
+
+        api.util.extend(constructor.prototype, {
+            setStart: function(node, offset) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeStart(this, node, offset);
+            },
+
+            setEnd: function(node, offset) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeEnd(this, node, offset);
+            },
+
+            setStartBefore: createBeforeAfterNodeSetter(true, true),
+            setStartAfter: createBeforeAfterNodeSetter(false, true),
+            setEndBefore: createBeforeAfterNodeSetter(true, false),
+            setEndAfter: createBeforeAfterNodeSetter(false, false),
+
+            collapse: function(isStart) {
+                assertRangeValid(this);
+                if (isStart) {
+                    boundaryUpdater(this, this.startContainer, this.startOffset, this.startContainer, this.startOffset);
+                } else {
+                    boundaryUpdater(this, this.endContainer, this.endOffset, this.endContainer, this.endOffset);
+                }
+            },
+
+            selectNodeContents: function(node) {
+                // This doesn't seem well specified: the spec talks only about selecting the node's contents, which
+                // could be taken to mean only its children. However, browsers implement this the same as selectNode for
+                // text nodes, so I shall do likewise
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+
+                boundaryUpdater(this, node, 0, node, dom.getNodeLength(node));
+            },
+
+            selectNode: function(node) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, false);
+                assertValidNodeType(node, beforeAfterNodeTypes);
+
+                var start = getBoundaryBeforeNode(node), end = getBoundaryAfterNode(node);
+                boundaryUpdater(this, start.node, start.offset, end.node, end.offset);
+            },
+
+            extractContents: createRangeContentRemover(extractSubtree, boundaryUpdater),
+
+            deleteContents: createRangeContentRemover(deleteSubtree, boundaryUpdater),
+
+            canSurroundContents: function() {
+                assertRangeValid(this);
+                assertNodeNotReadOnly(this.startContainer);
+                assertNodeNotReadOnly(this.endContainer);
+
+                // Check if the contents can be surrounded. Specifically, this means whether the range partially selects
+                // no non-text nodes.
+                var iterator = new RangeIterator(this, true);
+                var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
+                        (iterator._last && isNonTextPartiallySelected(iterator._last, this)));
+                iterator.detach();
+                return !boundariesInvalid;
+            },
+
+            detach: function() {
+                detacher(this);
+            },
+
+            splitBoundaries: function() {
+                assertRangeValid(this);
+
+
+                var sc = this.startContainer, so = this.startOffset, ec = this.endContainer, eo = this.endOffset;
+                var startEndSame = (sc === ec);
+
+                if (dom.isCharacterDataNode(ec) && eo > 0 && eo < ec.length) {
+                    dom.splitDataNode(ec, eo);
+
+                }
+
+                if (dom.isCharacterDataNode(sc) && so > 0 && so < sc.length) {
+
+                    sc = dom.splitDataNode(sc, so);
+                    if (startEndSame) {
+                        eo -= so;
+                        ec = sc;
+                    } else if (ec == sc.parentNode && eo >= dom.getNodeIndex(sc)) {
+                        eo++;
+                    }
+                    so = 0;
+
+                }
+                boundaryUpdater(this, sc, so, ec, eo);
+            },
+
+            normalizeBoundaries: function() {
+                assertRangeValid(this);
+
+                var sc = this.startContainer, so = this.startOffset, ec = this.endContainer, eo = this.endOffset;
+
+                var mergeForward = function(node) {
+                    var sibling = node.nextSibling;
+                    if (sibling && sibling.nodeType == node.nodeType) {
+                        ec = node;
+                        eo = node.length;
+                        node.appendData(sibling.data);
+                        sibling.parentNode.removeChild(sibling);
+                    }
+                };
+
+                var mergeBackward = function(node) {
+                    var sibling = node.previousSibling;
+                    if (sibling && sibling.nodeType == node.nodeType) {
+                        sc = node;
+                        var nodeLength = node.length;
+                        so = sibling.length;
+                        node.insertData(0, sibling.data);
+                        sibling.parentNode.removeChild(sibling);
+                        if (sc == ec) {
+                            eo += so;
+                            ec = sc;
+                        } else if (ec == node.parentNode) {
+                            var nodeIndex = dom.getNodeIndex(node);
+                            if (eo == nodeIndex) {
+                                ec = node;
+                                eo = nodeLength;
+                            } else if (eo > nodeIndex) {
+                                eo--;
+                            }
+                        }
+                    }
+                };
+
+                var normalizeStart = true;
+
+                if (dom.isCharacterDataNode(ec)) {
+                    if (ec.length == eo) {
+                        mergeForward(ec);
+                    }
+                } else {
+                    if (eo > 0) {
+                        var endNode = ec.childNodes[eo - 1];
+                        if (endNode && dom.isCharacterDataNode(endNode)) {
+                            mergeForward(endNode);
+                        }
+                    }
+                    normalizeStart = !this.collapsed;
+                }
+
+                if (normalizeStart) {
+                    if (dom.isCharacterDataNode(sc)) {
+                        if (so == 0) {
+                            mergeBackward(sc);
+                        }
+                    } else {
+                        if (so < sc.childNodes.length) {
+                            var startNode = sc.childNodes[so];
+                            if (startNode && dom.isCharacterDataNode(startNode)) {
+                                mergeBackward(startNode);
+                            }
+                        }
+                    }
+                } else {
+                    sc = ec;
+                    so = eo;
+                }
+
+                boundaryUpdater(this, sc, so, ec, eo);
+            },
+
+            collapseToPoint: function(node, offset) {
+                assertNotDetached(this);
+
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeStartAndEnd(this, node, offset);
+            }
+        });
+
+        copyComparisonConstants(constructor);
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Updates commonAncestorContainer and collapsed after boundary change
+    function updateCollapsedAndCommonAncestor(range) {
+        range.collapsed = (range.startContainer === range.endContainer && range.startOffset === range.endOffset);
+        range.commonAncestorContainer = range.collapsed ?
+            range.startContainer : dom.getCommonAncestor(range.startContainer, range.endContainer);
+    }
+
+    function updateBoundaries(range, startContainer, startOffset, endContainer, endOffset) {
+        var startMoved = (range.startContainer !== startContainer || range.startOffset !== startOffset);
+        var endMoved = (range.endContainer !== endContainer || range.endOffset !== endOffset);
+
+        range.startContainer = startContainer;
+        range.startOffset = startOffset;
+        range.endContainer = endContainer;
+        range.endOffset = endOffset;
+
+        updateCollapsedAndCommonAncestor(range);
+        dispatchEvent(range, "boundarychange", {startMoved: startMoved, endMoved: endMoved});
+    }
+
+    function detach(range) {
+        assertNotDetached(range);
+        range.startContainer = range.startOffset = range.endContainer = range.endOffset = null;
+        range.collapsed = range.commonAncestorContainer = null;
+        dispatchEvent(range, "detach", null);
+        range._listeners = null;
+    }
+
+    /**
+     * @constructor
+     */
+    function Range(doc) {
+        this.startContainer = doc;
+        this.startOffset = 0;
+        this.endContainer = doc;
+        this.endOffset = 0;
+        this._listeners = {
+            boundarychange: [],
+            detach: []
+        };
+        updateCollapsedAndCommonAncestor(this);
+    }
+
+    createPrototypeRange(Range, updateBoundaries, detach);
+
+    api.rangePrototype = RangePrototype.prototype;
+
+    Range.rangeProperties = rangeProperties;
+    Range.RangeIterator = RangeIterator;
+    Range.copyComparisonConstants = copyComparisonConstants;
+    Range.createPrototypeRange = createPrototypeRange;
+    Range.inspect = inspect;
+    Range.getRangeDocument = getRangeDocument;
+    Range.rangesEqual = function(r1, r2) {
+        return r1.startContainer === r2.startContainer &&
+               r1.startOffset === r2.startOffset &&
+               r1.endContainer === r2.endContainer &&
+               r1.endOffset === r2.endOffset;
+    };
+
+    api.DomRange = Range;
+    api.RangeException = RangeException;
+});rangy.createModule("WrappedRange", function(api, module) {
+    api.requireModules( ["DomUtil", "DomRange"] );
+
+    /**
+     * @constructor
+     */
+    var WrappedRange;
+    var dom = api.dom;
+    var DomPosition = dom.DomPosition;
+    var DomRange = api.DomRange;
+
+
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    /*
+    This is a workaround for a bug where IE returns the wrong container element from the TextRange's parentElement()
+    method. For example, in the following (where pipes denote the selection boundaries):
+
+    <ul id="ul"><li id="a">| a </li><li id="b"> b |</li></ul>
+
+    var range = document.selection.createRange();
+    alert(range.parentElement().id); // Should alert "ul" but alerts "b"
+
+    This method returns the common ancestor node of the following:
+    - the parentElement() of the textRange
+    - the parentElement() of the textRange after calling collapse(true)
+    - the parentElement() of the textRange after calling collapse(false)
+     */
+    function getTextRangeContainerElement(textRange) {
+        var parentEl = textRange.parentElement();
+
+        var range = textRange.duplicate();
+        range.collapse(true);
+        var startEl = range.parentElement();
+        range = textRange.duplicate();
+        range.collapse(false);
+        var endEl = range.parentElement();
+        var startEndContainer = (startEl == endEl) ? startEl : dom.getCommonAncestor(startEl, endEl);
+
+        return startEndContainer == parentEl ? startEndContainer : dom.getCommonAncestor(parentEl, startEndContainer);
+    }
+
+    function textRangeIsCollapsed(textRange) {
+        return textRange.compareEndPoints("StartToEnd", textRange) == 0;
+    }
+
+    // Gets the boundary of a TextRange expressed as a node and an offset within that node. This function started out as
+    // an improved version of code found in Tim Cameron Ryan's IERange (http://code.google.com/p/ierange/) but has
+    // grown, fixing problems with line breaks in preformatted text, adding workaround for IE TextRange bugs, handling
+    // for inputs and images, plus optimizations.
+    function getTextRangeBoundaryPosition(textRange, wholeRangeContainerElement, isStart, isCollapsed) {
+        var workingRange = textRange.duplicate();
+
+        workingRange.collapse(isStart);
+        var containerElement = workingRange.parentElement();
+
+        // Sometimes collapsing a TextRange that's at the start of a text node can move it into the previous node, so
+        // check for that
+        // TODO: Find out when. Workaround for wholeRangeContainerElement may break this
+        if (!dom.isAncestorOf(wholeRangeContainerElement, containerElement, true)) {
+            containerElement = wholeRangeContainerElement;
+
+        }
+
+
+
+        // Deal with nodes that cannot "contain rich HTML markup". In practice, this means form inputs, images and
+        // similar. See http://msdn.microsoft.com/en-us/library/aa703950%28VS.85%29.aspx
+        if (!containerElement.canHaveHTML) {
+            return new DomPosition(containerElement.parentNode, dom.getNodeIndex(containerElement));
+        }
+
+        var workingNode = dom.getDocument(containerElement).createElement("span");
+        var comparison, workingComparisonType = isStart ? "StartToStart" : "StartToEnd";
+        var previousNode, nextNode, boundaryPosition, boundaryNode;
+
+        // Move the working range through the container's children, starting at the end and working backwards, until the
+        // working range reaches or goes past the boundary we're interested in
+        do {
+            containerElement.insertBefore(workingNode, workingNode.previousSibling);
+            workingRange.moveToElementText(workingNode);
+        } while ( (comparison = workingRange.compareEndPoints(workingComparisonType, textRange)) > 0 &&
+                workingNode.previousSibling);
+
+        // We've now reached or gone past the boundary of the text range we're interested in
+        // so have identified the node we want
+        boundaryNode = workingNode.nextSibling;
+
+        if (comparison == -1 && boundaryNode && dom.isCharacterDataNode(boundaryNode)) {
+            // This is a character data node (text, comment, cdata). The working range is collapsed at the start of the
+            // node containing the text range's boundary, so we move the end of the working range to the boundary point
+            // and measure the length of its text to get the boundary's offset within the node.
+            workingRange.setEndPoint(isStart ? "EndToStart" : "EndToEnd", textRange);
+
+
+            var offset;
+
+            if (/[\r\n]/.test(boundaryNode.data)) {
+                /*
+                For the particular case of a boundary within a text node containing line breaks (within a <pre> element,
+                for example), we need a slightly complicated approach to get the boundary's offset in IE. The facts:
+
+                - Each line break is represented as \r in the text node's data/nodeValue properties
+                - Each line break is represented as \r\n in the TextRange's 'text' property
+                - The 'text' property of the TextRange does not contain trailing line breaks
+
+                To get round the problem presented by the final fact above, we can use the fact that TextRange's
+                moveStart() and moveEnd() methods return the actual number of characters moved, which is not necessarily
+                the same as the number of characters it was instructed to move. The simplest approach is to use this to
+                store the characters moved when moving both the start and end of the range to the start of the document
+                body and subtracting the start offset from the end offset (the "move-negative-gazillion" method).
+                However, this is extremely slow when the document is large and the range is near the end of it. Clearly
+                doing the mirror image (i.e. moving the range boundaries to the end of the document) has the same
+                problem.
+
+                Another approach that works is to use moveStart() to move the start boundary of the range up to the end
+                boundary one character at a time and incrementing a counter with the value returned by the moveStart()
+                call. However, the check for whether the start boundary has reached the end boundary is expensive, so
+                this method is slow (although unlike "move-negative-gazillion" is largely unaffected by the location of
+                the range within the document).
+
+                The method below is a hybrid of the two methods above. It uses the fact that a string containing the
+                TextRange's 'text' property with each \r\n converted to a single \r character cannot be longer than the
+                text of the TextRange, so the start of the range is moved that length initially and then a character at
+                a time to make up for any trailing line breaks not contained in the 'text' property. This has good
+                performance in most situations compared to the previous two methods.
+                */
+                var tempRange = workingRange.duplicate();
+                var rangeLength = tempRange.text.replace(/\r\n/g, "\r").length;
+
+                offset = tempRange.moveStart("character", rangeLength);
+                while ( (comparison = tempRange.compareEndPoints("StartToEnd", tempRange)) == -1) {
+                    offset++;
+                    tempRange.moveStart("character", 1);
+                }
+            } else {
+                offset = workingRange.text.length;
+            }
+            boundaryPosition = new DomPosition(boundaryNode, offset);
+        } else {
+
+
+            // If the boundary immediately follows a character data node and this is the end boundary, we should favour
+            // a position within that, and likewise for a start boundary preceding a character data node
+            previousNode = (isCollapsed || !isStart) && workingNode.previousSibling;
+            nextNode = (isCollapsed || isStart) && workingNode.nextSibling;
+
+
+
+            if (nextNode && dom.isCharacterDataNode(nextNode)) {
+                boundaryPosition = new DomPosition(nextNode, 0);
+            } else if (previousNode && dom.isCharacterDataNode(previousNode)) {
+                boundaryPosition = new DomPosition(previousNode, previousNode.length);
+            } else {
+                boundaryPosition = new DomPosition(containerElement, dom.getNodeIndex(workingNode));
+            }
+        }
+
+        // Clean up
+        workingNode.parentNode.removeChild(workingNode);
+
+        return boundaryPosition;
+    }
+
+    // Returns a TextRange representing the boundary of a TextRange expressed as a node and an offset within that node.
+    // This function started out as an optimized version of code found in Tim Cameron Ryan's IERange
+    // (http://code.google.com/p/ierange/)
+    function createBoundaryTextRange(boundaryPosition, isStart) {
+        var boundaryNode, boundaryParent, boundaryOffset = boundaryPosition.offset;
+        var doc = dom.getDocument(boundaryPosition.node);
+        var workingNode, childNodes, workingRange = doc.body.createTextRange();
+        var nodeIsDataNode = dom.isCharacterDataNode(boundaryPosition.node);
+
+        if (nodeIsDataNode) {
+            boundaryNode = boundaryPosition.node;
+            boundaryParent = boundaryNode.parentNode;
+        } else {
+            childNodes = boundaryPosition.node.childNodes;
+            boundaryNode = (boundaryOffset < childNodes.length) ? childNodes[boundaryOffset] : null;
+            boundaryParent = boundaryPosition.node;
+        }
+
+        // Position the range immediately before the node containing the boundary
+        workingNode = doc.createElement("span");
+
+        // Making the working element non-empty element persuades IE to consider the TextRange boundary to be within the
+        // element rather than immediately before or after it, which is what we want
+        workingNode.innerHTML = "&#feff;";
+
+        // insertBefore is supposed to work like appendChild if the second parameter is null. However, a bug report
+        // for IERange suggests that it can crash the browser: http://code.google.com/p/ierange/issues/detail?id=12
+        if (boundaryNode) {
+            boundaryParent.insertBefore(workingNode, boundaryNode);
+        } else {
+            boundaryParent.appendChild(workingNode);
+        }
+
+        workingRange.moveToElementText(workingNode);
+        workingRange.collapse(!isStart);
+
+        // Clean up
+        boundaryParent.removeChild(workingNode);
+
+        // Move the working range to the text offset, if required
+        if (nodeIsDataNode) {
+            workingRange[isStart ? "moveStart" : "moveEnd"]("character", boundaryOffset);
+        }
+
+        return workingRange;
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    if (api.features.implementsDomRange && (!api.features.implementsTextRange || !api.config.preferTextRange)) {
+        // This is a wrapper around the browser's native DOM Range. It has two aims:
+        // - Provide workarounds for specific browser bugs
+        // - provide convenient extensions, which are inherited from Rangy's DomRange
+
+        (function() {
+            var rangeProto;
+            var rangeProperties = DomRange.rangeProperties;
+            var canSetRangeStartAfterEnd;
+
+            function updateRangeProperties(range) {
+                var i = rangeProperties.length, prop;
+                while (i--) {
+                    prop = rangeProperties[i];
+                    range[prop] = range.nativeRange[prop];
+                }
+            }
+
+            function updateNativeRange(range, startContainer, startOffset, endContainer,endOffset) {
+                var startMoved = (range.startContainer !== startContainer || range.startOffset != startOffset);
+                var endMoved = (range.endContainer !== endContainer || range.endOffset != endOffset);
+
+                // Always set both boundaries for the benefit of IE9 (see issue 35)
+                if (startMoved || endMoved) {
+                    range.setEnd(endContainer, endOffset);
+                    range.setStart(startContainer, startOffset);
+                }
+            }
+
+            function detach(range) {
+                range.nativeRange.detach();
+                range.detached = true;
+                var i = rangeProperties.length, prop;
+                while (i--) {
+                    prop = rangeProperties[i];
+                    range[prop] = null;
+                }
+            }
+
+            var createBeforeAfterNodeSetter;
+
+            WrappedRange = function(range) {
+                if (!range) {
+                    throw new Error("Range must be specified");
+                }
+                this.nativeRange = range;
+                updateRangeProperties(this);
+            };
+
+            DomRange.createPrototypeRange(WrappedRange, updateNativeRange, detach);
+
+            rangeProto = WrappedRange.prototype;
+
+            rangeProto.selectNode = function(node) {
+                this.nativeRange.selectNode(node);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.deleteContents = function() {
+                this.nativeRange.deleteContents();
+                updateRangeProperties(this);
+            };
+
+            rangeProto.extractContents = function() {
+                var frag = this.nativeRange.extractContents();
+                updateRangeProperties(this);
+                return frag;
+            };
+
+            rangeProto.cloneContents = function() {
+                return this.nativeRange.cloneContents();
+            };
+
+            // TODO: Until I can find a way to programmatically trigger the Firefox bug (apparently long-standing, still
+            // present in 3.6.8) that throws "Index or size is negative or greater than the allowed amount" for
+            // insertNode in some circumstances, all browsers will have to use the Rangy's own implementation of
+            // insertNode, which works but is almost certainly slower than the native implementation.
+/*
+            rangeProto.insertNode = function(node) {
+                this.nativeRange.insertNode(node);
+                updateRangeProperties(this);
+            };
+*/
+
+            rangeProto.surroundContents = function(node) {
+                this.nativeRange.surroundContents(node);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.collapse = function(isStart) {
+                this.nativeRange.collapse(isStart);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.cloneRange = function() {
+                return new WrappedRange(this.nativeRange.cloneRange());
+            };
+
+            rangeProto.refresh = function() {
+                updateRangeProperties(this);
+            };
+
+            rangeProto.toString = function() {
+                return this.nativeRange.toString();
+            };
+
+            // Create test range and node for feature detection
+
+            var testTextNode = document.createTextNode("test");
+            dom.getBody(document).appendChild(testTextNode);
+            var range = document.createRange();
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for Firefox 2 bug that prevents moving the start of a Range to a point after its current end and
+            // correct for it
+
+            range.setStart(testTextNode, 0);
+            range.setEnd(testTextNode, 0);
+
+            try {
+                range.setStart(testTextNode, 1);
+                canSetRangeStartAfterEnd = true;
+
+                rangeProto.setStart = function(node, offset) {
+                    this.nativeRange.setStart(node, offset);
+                    updateRangeProperties(this);
+                };
+
+                rangeProto.setEnd = function(node, offset) {
+                    this.nativeRange.setEnd(node, offset);
+                    updateRangeProperties(this);
+                };
+
+                createBeforeAfterNodeSetter = function(name) {
+                    return function(node) {
+                        this.nativeRange[name](node);
+                        updateRangeProperties(this);
+                    };
+                };
+
+            } catch(ex) {
+
+
+                canSetRangeStartAfterEnd = false;
+
+                rangeProto.setStart = function(node, offset) {
+                    try {
+                        this.nativeRange.setStart(node, offset);
+                    } catch (ex) {
+                        this.nativeRange.setEnd(node, offset);
+                        this.nativeRange.setStart(node, offset);
+                    }
+                    updateRangeProperties(this);
+                };
+
+                rangeProto.setEnd = function(node, offset) {
+                    try {
+                        this.nativeRange.setEnd(node, offset);
+                    } catch (ex) {
+                        this.nativeRange.setStart(node, offset);
+                        this.nativeRange.setEnd(node, offset);
+                    }
+                    updateRangeProperties(this);
+                };
+
+                createBeforeAfterNodeSetter = function(name, oppositeName) {
+                    return function(node) {
+                        try {
+                            this.nativeRange[name](node);
+                        } catch (ex) {
+                            this.nativeRange[oppositeName](node);
+                            this.nativeRange[name](node);
+                        }
+                        updateRangeProperties(this);
+                    };
+                };
+            }
+
+            rangeProto.setStartBefore = createBeforeAfterNodeSetter("setStartBefore", "setEndBefore");
+            rangeProto.setStartAfter = createBeforeAfterNodeSetter("setStartAfter", "setEndAfter");
+            rangeProto.setEndBefore = createBeforeAfterNodeSetter("setEndBefore", "setStartBefore");
+            rangeProto.setEndAfter = createBeforeAfterNodeSetter("setEndAfter", "setStartAfter");
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for and correct Firefox 2 behaviour with selectNodeContents on text nodes: it collapses the range to
+            // the 0th character of the text node
+            range.selectNodeContents(testTextNode);
+            if (range.startContainer == testTextNode && range.endContainer == testTextNode &&
+                    range.startOffset == 0 && range.endOffset == testTextNode.length) {
+                rangeProto.selectNodeContents = function(node) {
+                    this.nativeRange.selectNodeContents(node);
+                    updateRangeProperties(this);
+                };
+            } else {
+                rangeProto.selectNodeContents = function(node) {
+                    this.setStart(node, 0);
+                    this.setEnd(node, DomRange.getEndOffset(node));
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for WebKit bug that has the beahviour of compareBoundaryPoints round the wrong way for constants
+            // START_TO_END and END_TO_START: https://bugs.webkit.org/show_bug.cgi?id=20738
+
+            range.selectNodeContents(testTextNode);
+            range.setEnd(testTextNode, 3);
+
+            var range2 = document.createRange();
+            range2.selectNodeContents(testTextNode);
+            range2.setEnd(testTextNode, 4);
+            range2.setStart(testTextNode, 2);
+
+            if (range.compareBoundaryPoints(range.START_TO_END, range2) == -1 &
+                    range.compareBoundaryPoints(range.END_TO_START, range2) == 1) {
+                // This is the wrong way round, so correct for it
+
+
+                rangeProto.compareBoundaryPoints = function(type, range) {
+                    range = range.nativeRange || range;
+                    if (type == range.START_TO_END) {
+                        type = range.END_TO_START;
+                    } else if (type == range.END_TO_START) {
+                        type = range.START_TO_END;
+                    }
+                    return this.nativeRange.compareBoundaryPoints(type, range);
+                };
+            } else {
+                rangeProto.compareBoundaryPoints = function(type, range) {
+                    return this.nativeRange.compareBoundaryPoints(type, range.nativeRange || range);
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for existence of createContextualFragment and delegate to it if it exists
+            if (api.util.isHostMethod(range, "createContextualFragment")) {
+                rangeProto.createContextualFragment = function(fragmentStr) {
+                    return this.nativeRange.createContextualFragment(fragmentStr);
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Clean up
+            dom.getBody(document).removeChild(testTextNode);
+            range.detach();
+            range2.detach();
+        })();
+
+        api.createNativeRange = function(doc) {
+            doc = doc || document;
+            return doc.createRange();
+        };
+    } else if (api.features.implementsTextRange) {
+        // This is a wrapper around a TextRange, providing full DOM Range functionality using rangy's DomRange as a
+        // prototype
+
+        WrappedRange = function(textRange) {
+            this.textRange = textRange;
+            this.refresh();
+        };
+
+        WrappedRange.prototype = new DomRange(document);
+
+        WrappedRange.prototype.refresh = function() {
+            var start, end;
+
+            // TextRange's parentElement() method cannot be trusted. getTextRangeContainerElement() works around that.
+            var rangeContainerElement = getTextRangeContainerElement(this.textRange);
+
+            if (textRangeIsCollapsed(this.textRange)) {
+                end = start = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, true);
+            } else {
+
+                start = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, false);
+                end = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, false, false);
+            }
+
+            this.setStart(start.node, start.offset);
+            this.setEnd(end.node, end.offset);
+        };
+
+        DomRange.copyComparisonConstants(WrappedRange);
+
+        // Add WrappedRange as the Range property of the global object to allow expression like Range.END_TO_END to work
+        var globalObj = (function() { return this; })();
+        if (typeof globalObj.Range == "undefined") {
+            globalObj.Range = WrappedRange;
+        }
+
+        api.createNativeRange = function(doc) {
+            doc = doc || document;
+            return doc.body.createTextRange();
+        };
+    }
+
+    if (api.features.implementsTextRange) {
+        WrappedRange.rangeToTextRange = function(range) {
+            if (range.collapsed) {
+                var tr = createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+
+
+
+                return tr;
+
+                //return createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+            } else {
+                var startRange = createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+                var endRange = createBoundaryTextRange(new DomPosition(range.endContainer, range.endOffset), false);
+                var textRange = dom.getDocument(range.startContainer).body.createTextRange();
+                textRange.setEndPoint("StartToStart", startRange);
+                textRange.setEndPoint("EndToEnd", endRange);
+                return textRange;
+            }
+        };
+    }
+
+    WrappedRange.prototype.getName = function() {
+        return "WrappedRange";
+    };
+
+    api.WrappedRange = WrappedRange;
+
+    api.createRange = function(doc) {
+        doc = doc || document;
+        return new WrappedRange(api.createNativeRange(doc));
+    };
+
+    api.createRangyRange = function(doc) {
+        doc = doc || document;
+        return new DomRange(doc);
+    };
+
+    api.createIframeRange = function(iframeEl) {
+        return api.createRange(dom.getIframeDocument(iframeEl));
+    };
+
+    api.createIframeRangyRange = function(iframeEl) {
+        return api.createRangyRange(dom.getIframeDocument(iframeEl));
+    };
+
+    api.addCreateMissingNativeApiListener(function(win) {
+        var doc = win.document;
+        if (typeof doc.createRange == "undefined") {
+            doc.createRange = function() {
+                return api.createRange(this);
+            };
+        }
+        doc = win = null;
+    });
+});rangy.createModule("WrappedSelection", function(api, module) {
+    // This will create a selection object wrapper that follows the Selection object found in the WHATWG draft DOM Range
+    // spec (http://html5.org/specs/dom-range.html)
+
+    api.requireModules( ["DomUtil", "DomRange", "WrappedRange"] );
+
+    api.config.checkSelectionRanges = true;
+
+    var BOOLEAN = "boolean",
+        windowPropertyName = "_rangySelection",
+        dom = api.dom,
+        util = api.util,
+        DomRange = api.DomRange,
+        WrappedRange = api.WrappedRange,
+        DOMException = api.DOMException,
+        DomPosition = dom.DomPosition,
+        getSelection,
+        selectionIsCollapsed,
+        CONTROL = "Control";
+
+
+
+    function getWinSelection(winParam) {
+        return (winParam || window).getSelection();
+    }
+
+    function getDocSelection(winParam) {
+        return (winParam || window).document.selection;
+    }
+
+    // Test for the Range/TextRange and Selection features required
+    // Test for ability to retrieve selection
+    var implementsWinGetSelection = api.util.isHostMethod(window, "getSelection"),
+        implementsDocSelection = api.util.isHostObject(document, "selection");
+
+    var useDocumentSelection = implementsDocSelection && (!implementsWinGetSelection || api.config.preferTextRange);
+
+    if (useDocumentSelection) {
+        getSelection = getDocSelection;
+        api.isSelectionValid = function(winParam) {
+            var doc = (winParam || window).document, nativeSel = doc.selection;
+
+            // Check whether the selection TextRange is actually contained within the correct document
+            return (nativeSel.type != "None" || dom.getDocument(nativeSel.createRange().parentElement()) == doc);
+        };
+    } else if (implementsWinGetSelection) {
+        getSelection = getWinSelection;
+        api.isSelectionValid = function() {
+            return true;
+        };
+    } else {
+        module.fail("Neither document.selection or window.getSelection() detected.");
+    }
+
+    api.getNativeSelection = getSelection;
+
+    var testSelection = getSelection();
+    var testRange = api.createNativeRange(document);
+    var body = dom.getBody(document);
+
+    // Obtaining a range from a selection
+    var selectionHasAnchorAndFocus = util.areHostObjects(testSelection, ["anchorNode", "focusNode"] &&
+                                     util.areHostProperties(testSelection, ["anchorOffset", "focusOffset"]));
+    api.features.selectionHasAnchorAndFocus = selectionHasAnchorAndFocus;
+
+    // Test for existence of native selection extend() method
+    var selectionHasExtend = util.isHostMethod(testSelection, "extend");
+    api.features.selectionHasExtend = selectionHasExtend;
+
+    // Test if rangeCount exists
+    var selectionHasRangeCount = (typeof testSelection.rangeCount == "number");
+    api.features.selectionHasRangeCount = selectionHasRangeCount;
+
+    var selectionSupportsMultipleRanges = false;
+    var collapsedNonEditableSelectionsSupported = true;
+
+    if (util.areHostMethods(testSelection, ["addRange", "getRangeAt", "removeAllRanges"]) &&
+            typeof testSelection.rangeCount == "number" && api.features.implementsDomRange) {
+
+        (function() {
+            var iframe = document.createElement("iframe");
+            iframe.frameBorder = 0;
+            iframe.style.position = "absolute";
+            iframe.style.left = "-10000px";
+            body.appendChild(iframe);
+
+            var iframeDoc = dom.getIframeDocument(iframe);
+            iframeDoc.open();
+            iframeDoc.write("<html><head></head><body>12</body></html>");
+            iframeDoc.close();
+
+            var sel = dom.getIframeWindow(iframe).getSelection();
+            var docEl = iframeDoc.documentElement;
+            var iframeBody = docEl.lastChild, textNode = iframeBody.firstChild;
+
+            // Test whether the native selection will allow a collapsed selection within a non-editable element
+            var r1 = iframeDoc.createRange();
+            r1.setStart(textNode, 1);
+            r1.collapse(true);
+            sel.addRange(r1);
+            collapsedNonEditableSelectionsSupported = (sel.rangeCount == 1);
+            sel.removeAllRanges();
+
+            // Test whether the native selection is capable of supporting multiple ranges
+            var r2 = r1.cloneRange();
+            r1.setStart(textNode, 0);
+            r2.setEnd(textNode, 2);
+            sel.addRange(r1);
+            sel.addRange(r2);
+
+            selectionSupportsMultipleRanges = (sel.rangeCount == 2);
+
+            // Clean up
+            r1.detach();
+            r2.detach();
+
+            body.removeChild(iframe);
+        })();
+    }
+
+    api.features.selectionSupportsMultipleRanges = selectionSupportsMultipleRanges;
+    api.features.collapsedNonEditableSelectionsSupported = collapsedNonEditableSelectionsSupported;
+
+    // ControlRanges
+    var implementsControlRange = false, testControlRange;
+
+    if (body && util.isHostMethod(body, "createControlRange")) {
+        testControlRange = body.createControlRange();
+        if (util.areHostProperties(testControlRange, ["item", "add"])) {
+            implementsControlRange = true;
+        }
+    }
+    api.features.implementsControlRange = implementsControlRange;
+
+    // Selection collapsedness
+    if (selectionHasAnchorAndFocus) {
+        selectionIsCollapsed = function(sel) {
+            return sel.anchorNode === sel.focusNode && sel.anchorOffset === sel.focusOffset;
+        };
+    } else {
+        selectionIsCollapsed = function(sel) {
+            return sel.rangeCount ? sel.getRangeAt(sel.rangeCount - 1).collapsed : false;
+        };
+    }
+
+    function updateAnchorAndFocusFromRange(sel, range, backwards) {
+        var anchorPrefix = backwards ? "end" : "start", focusPrefix = backwards ? "start" : "end";
+        sel.anchorNode = range[anchorPrefix + "Container"];
+        sel.anchorOffset = range[anchorPrefix + "Offset"];
+        sel.focusNode = range[focusPrefix + "Container"];
+        sel.focusOffset = range[focusPrefix + "Offset"];
+    }
+
+    function updateAnchorAndFocusFromNativeSelection(sel) {
+        var nativeSel = sel.nativeSelection;
+        sel.anchorNode = nativeSel.anchorNode;
+        sel.anchorOffset = nativeSel.anchorOffset;
+        sel.focusNode = nativeSel.focusNode;
+        sel.focusOffset = nativeSel.focusOffset;
+    }
+
+    function updateEmptySelection(sel) {
+        sel.anchorNode = sel.focusNode = null;
+        sel.anchorOffset = sel.focusOffset = 0;
+        sel.rangeCount = 0;
+        sel.isCollapsed = true;
+        sel._ranges.length = 0;
+    }
+
+    function getNativeRange(range) {
+        var nativeRange;
+        if (range instanceof DomRange) {
+            nativeRange = range._selectionNativeRange;
+            if (!nativeRange) {
+                nativeRange = api.createNativeRange(dom.getDocument(range.startContainer));
+                nativeRange.setEnd(range.endContainer, range.endOffset);
+                nativeRange.setStart(range.startContainer, range.startOffset);
+                range._selectionNativeRange = nativeRange;
+                range.attachListener("detach", function() {
+
+                    this._selectionNativeRange = null;
+                });
+            }
+        } else if (range instanceof WrappedRange) {
+            nativeRange = range.nativeRange;
+        } else if (api.features.implementsDomRange && (range instanceof dom.getWindow(range.startContainer).Range)) {
+            nativeRange = range;
+        }
+        return nativeRange;
+    }
+
+    function rangeContainsSingleElement(rangeNodes) {
+        if (!rangeNodes.length || rangeNodes[0].nodeType != 1) {
+            return false;
+        }
+        for (var i = 1, len = rangeNodes.length; i < len; ++i) {
+            if (!dom.isAncestorOf(rangeNodes[0], rangeNodes[i])) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    function getSingleElementFromRange(range) {
+        var nodes = range.getNodes();
+        if (!rangeContainsSingleElement(nodes)) {
+            throw new Error("getSingleElementFromRange: range " + range.inspect() + " did not consist of a single element");
+        }
+        return nodes[0];
+    }
+
+    function isTextRange(range) {
+        return !!range && typeof range.text != "undefined";
+    }
+
+    function updateFromTextRange(sel, range) {
+        // Create a Range from the selected TextRange
+        var wrappedRange = new WrappedRange(range);
+        sel._ranges = [wrappedRange];
+
+        updateAnchorAndFocusFromRange(sel, wrappedRange, false);
+        sel.rangeCount = 1;
+        sel.isCollapsed = wrappedRange.collapsed;
+    }
+
+    function updateControlSelection(sel) {
+        // Update the wrapped selection based on what's now in the native selection
+        sel._ranges.length = 0;
+        if (sel.docSelection.type == "None") {
+            updateEmptySelection(sel);
+        } else {
+            var controlRange = sel.docSelection.createRange();
+            if (isTextRange(controlRange)) {
+                // This case (where the selection type is "Control" and calling createRange() on the selection returns
+                // a TextRange) can happen in IE 9. It happens, for example, when all elements in the selected
+                // ControlRange have been removed from the ControlRange and removed from the document.
+                updateFromTextRange(sel, controlRange);
+            } else {
+                sel.rangeCount = controlRange.length;
+                var range, doc = dom.getDocument(controlRange.item(0));
+                for (var i = 0; i < sel.rangeCount; ++i) {
+                    range = api.createRange(doc);
+                    range.selectNode(controlRange.item(i));
+                    sel._ranges.push(range);
+                }
+                sel.isCollapsed = sel.rangeCount == 1 && sel._ranges[0].collapsed;
+                updateAnchorAndFocusFromRange(sel, sel._ranges[sel.rangeCount - 1], false);
+            }
+        }
+    }
+
+    function addRangeToControlSelection(sel, range) {
+        var controlRange = sel.docSelection.createRange();
+        var rangeElement = getSingleElementFromRange(range);
+
+        // Create a new ControlRange containing all the elements in the selected ControlRange plus the element
+        // contained by the supplied range
+        var doc = dom.getDocument(controlRange.item(0));
+        var newControlRange = dom.getBody(doc).createControlRange();
+        for (var i = 0, len = controlRange.length; i < len; ++i) {
+            newControlRange.add(controlRange.item(i));
+        }
+        try {
+            newControlRange.add(rangeElement);
+        } catch (ex) {
+            throw new Error("addRange(): Element within the specified Range could not be added to control selection (does it have layout?)");
+        }
+        newControlRange.select();
+
+        // Update the wrapped selection based on what's now in the native selection
+        updateControlSelection(sel);
+    }
+
+    var getSelectionRangeAt;
+
+    if (util.isHostMethod(testSelection,  "getRangeAt")) {
+        getSelectionRangeAt = function(sel, index) {
+            try {
+                return sel.getRangeAt(index);
+            } catch(ex) {
+                return null;
+            }
+        };
+    } else if (selectionHasAnchorAndFocus) {
+        getSelectionRangeAt = function(sel) {
+            var doc = dom.getDocument(sel.anchorNode);
+            var range = api.createRange(doc);
+            range.setStart(sel.anchorNode, sel.anchorOffset);
+            range.setEnd(sel.focusNode, sel.focusOffset);
+
+            // Handle the case when the selection was selected backwards (from the end to the start in the
+            // document)
+            if (range.collapsed !== this.isCollapsed) {
+                range.setStart(sel.focusNode, sel.focusOffset);
+                range.setEnd(sel.anchorNode, sel.anchorOffset);
+            }
+
+            return range;
+        };
+    }
+
+    /**
+     * @constructor
+     */
+    function WrappedSelection(selection, docSelection, win) {
+        this.nativeSelection = selection;
+        this.docSelection = docSelection;
+        this._ranges = [];
+        this.win = win;
+        this.refresh();
+    }
+
+    api.getSelection = function(win) {
+        win = win || window;
+        var sel = win[windowPropertyName];
+        var nativeSel = getSelection(win), docSel = implementsDocSelection ? getDocSelection(win) : null;
+        if (sel) {
+            sel.nativeSelection = nativeSel;
+            sel.docSelection = docSel;
+            sel.refresh(win);
+        } else {
+            sel = new WrappedSelection(nativeSel, docSel, win);
+            win[windowPropertyName] = sel;
+        }
+        return sel;
+    };
+
+    api.getIframeSelection = function(iframeEl) {
+        return api.getSelection(dom.getIframeWindow(iframeEl));
+    };
+
+    var selProto = WrappedSelection.prototype;
+
+    function createControlSelection(sel, ranges) {
+        // Ensure that the selection becomes of type "Control"
+        var doc = dom.getDocument(ranges[0].startContainer);
+        var controlRange = dom.getBody(doc).createControlRange();
+        for (var i = 0, el; i < rangeCount; ++i) {
+            el = getSingleElementFromRange(ranges[i]);
+            try {
+                controlRange.add(el);
+            } catch (ex) {
+                throw new Error("setRanges(): Element within the one of the specified Ranges could not be added to control selection (does it have layout?)");
+            }
+        }
+        controlRange.select();
+
+        // Update the wrapped selection based on what's now in the native selection
+        updateControlSelection(sel);
+    }
+
+    // Selecting a range
+    if (!useDocumentSelection && selectionHasAnchorAndFocus && util.areHostMethods(testSelection, ["removeAllRanges", "addRange"])) {
+        selProto.removeAllRanges = function() {
+            this.nativeSelection.removeAllRanges();
+            updateEmptySelection(this);
+        };
+
+        var addRangeBackwards = function(sel, range) {
+            var doc = DomRange.getRangeDocument(range);
+            var endRange = api.createRange(doc);
+            endRange.collapseToPoint(range.endContainer, range.endOffset);
+            sel.nativeSelection.addRange(getNativeRange(endRange));
+            sel.nativeSelection.extend(range.startContainer, range.startOffset);
+            sel.refresh();
+        };
+
+        if (selectionHasRangeCount) {
+            selProto.addRange = function(range, backwards) {
+                if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
+                    addRangeToControlSelection(this, range);
+                } else {
+                    if (backwards && selectionHasExtend) {
+                        addRangeBackwards(this, range);
+                    } else {
+                        var previousRangeCount;
+                        if (selectionSupportsMultipleRanges) {
+                            previousRangeCount = this.rangeCount;
+                        } else {
+                            this.removeAllRanges();
+                            previousRangeCount = 0;
+                        }
+                        this.nativeSelection.addRange(getNativeRange(range));
+
+                        // Check whether adding the range was successful
+                        this.rangeCount = this.nativeSelection.rangeCount;
+
+                        if (this.rangeCount == previousRangeCount + 1) {
+                            // The range was added successfully
+
+                            // Check whether the range that we added to the selection is reflected in the last range extracted from
+                            // the selection
+                            if (api.config.checkSelectionRanges) {
+                                var nativeRange = getSelectionRangeAt(this.nativeSelection, this.rangeCount - 1);
+                                if (nativeRange && !DomRange.rangesEqual(nativeRange, range)) {
+                                    // Happens in WebKit with, for example, a selection placed at the start of a text node
+                                    range = new WrappedRange(nativeRange);
+                                }
+                            }
+                            this._ranges[this.rangeCount - 1] = range;
+                            updateAnchorAndFocusFromRange(this, range, selectionIsBackwards(this.nativeSelection));
+                            this.isCollapsed = selectionIsCollapsed(this);
+                        } else {
+                            // The range was not added successfully. The simplest thing is to refresh
+                            this.refresh();
+                        }
+                    }
+                }
+            };
+        } else {
+            selProto.addRange = function(range, backwards) {
+                if (backwards && selectionHasExtend) {
+                    addRangeBackwards(this, range);
+                } else {
+                    this.nativeSelection.addRange(getNativeRange(range));
+                    this.refresh();
+                }
+            };
+        }
+
+        selProto.setRanges = function(ranges) {
+            if (implementsControlRange && ranges.length > 1) {
+                createControlSelection(this, ranges);
+            } else {
+                this.removeAllRanges();
+                for (var i = 0, len = ranges.length; i < len; ++i) {
+                    this.addRange(ranges[i]);
+                }
+            }
+        };
+    } else if (util.isHostMethod(testSelection, "empty") && util.isHostMethod(testRange, "select") &&
+               implementsControlRange && useDocumentSelection) {
+
+        selProto.removeAllRanges = function() {
+            // Added try/catch as fix for issue #21
+            try {
+                this.docSelection.empty();
+
+                // Check for empty() not working (issue #24)
+                if (this.docSelection.type != "None") {
+                    // Work around failure to empty a control selection by instead selecting a TextRange and then
+                    // calling empty()
+                    var doc;
+                    if (this.anchorNode) {
+                        doc = dom.getDocument(this.anchorNode);
+                    } else if (this.docSelection.type == CONTROL) {
+                        var controlRange = this.docSelection.createRange();
+                        if (controlRange.length) {
+                            doc = dom.getDocument(controlRange.item(0)).body.createTextRange();
+                        }
+                    }
+                    if (doc) {
+                        var textRange = doc.body.createTextRange();
+                        textRange.select();
+                        this.docSelection.empty();
+                    }
+                }
+            } catch(ex) {}
+            updateEmptySelection(this);
+        };
+
+        selProto.addRange = function(range) {
+            if (this.docSelection.type == CONTROL) {
+                addRangeToControlSelection(this, range);
+            } else {
+                WrappedRange.rangeToTextRange(range).select();
+                this._ranges[0] = range;
+                this.rangeCount = 1;
+                this.isCollapsed = this._ranges[0].collapsed;
+                updateAnchorAndFocusFromRange(this, range, false);
+            }
+        };
+
+        selProto.setRanges = function(ranges) {
+            this.removeAllRanges();
+            var rangeCount = ranges.length;
+            if (rangeCount > 1) {
+                createControlSelection(this, ranges);
+            } else if (rangeCount) {
+                this.addRange(ranges[0]);
+            }
+        };
+    } else {
+        module.fail("No means of selecting a Range or TextRange was found");
+        return false;
+    }
+
+    selProto.getRangeAt = function(index) {
+        if (index < 0 || index >= this.rangeCount) {
+            throw new DOMException("INDEX_SIZE_ERR");
+        } else {
+            return this._ranges[index];
+        }
+    };
+
+    var refreshSelection;
+
+    if (useDocumentSelection) {
+        refreshSelection = function(sel) {
+            var range;
+            if (api.isSelectionValid(sel.win)) {
+                range = sel.docSelection.createRange();
+            } else {
+                range = dom.getBody(sel.win.document).createTextRange();
+                range.collapse(true);
+            }
+
+
+            if (sel.docSelection.type == CONTROL) {
+                updateControlSelection(sel);
+            } else if (isTextRange(range)) {
+                updateFromTextRange(sel, range);
+            } else {
+                updateEmptySelection(sel);
+            }
+        };
+    } else if (util.isHostMethod(testSelection, "getRangeAt") && typeof testSelection.rangeCount == "number") {
+        refreshSelection = function(sel) {
+            if (implementsControlRange && implementsDocSelection && sel.docSelection.type == CONTROL) {
+                updateControlSelection(sel);
+            } else {
+                sel._ranges.length = sel.rangeCount = sel.nativeSelection.rangeCount;
+                if (sel.rangeCount) {
+                    for (var i = 0, len = sel.rangeCount; i < len; ++i) {
+                        sel._ranges[i] = new api.WrappedRange(sel.nativeSelection.getRangeAt(i));
+                    }
+                    updateAnchorAndFocusFromRange(sel, sel._ranges[sel.rangeCount - 1], selectionIsBackwards(sel.nativeSelection));
+                    sel.isCollapsed = selectionIsCollapsed(sel);
+                } else {
+                    updateEmptySelection(sel);
+                }
+            }
+        };
+    } else if (selectionHasAnchorAndFocus && typeof testSelection.isCollapsed == BOOLEAN && typeof testRange.collapsed == BOOLEAN && api.features.implementsDomRange) {
+        refreshSelection = function(sel) {
+            var range, nativeSel = sel.nativeSelection;
+            if (nativeSel.anchorNode) {
+                range = getSelectionRangeAt(nativeSel, 0);
+                sel._ranges = [range];
+                sel.rangeCount = 1;
+                updateAnchorAndFocusFromNativeSelection(sel);
+                sel.isCollapsed = selectionIsCollapsed(sel);
+            } else {
+                updateEmptySelection(sel);
+            }
+        };
+    } else {
+        module.fail("No means of obtaining a Range or TextRange from the user's selection was found");
+        return false;
+    }
+
+    selProto.refresh = function(checkForChanges) {
+        var oldRanges = checkForChanges ? this._ranges.slice(0) : null;
+        refreshSelection(this);
+        if (checkForChanges) {
+            var i = oldRanges.length;
+            if (i != this._ranges.length) {
+                return false;
+            }
+            while (i--) {
+                if (!DomRange.rangesEqual(oldRanges[i], this._ranges[i])) {
+                    return false;
+                }
+            }
+            return true;
+        }
+    };
+
+    // Removal of a single range
+    var removeRangeManually = function(sel, range) {
+        var ranges = sel.getAllRanges(), removed = false;
+        sel.removeAllRanges();
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            if (removed || range !== ranges[i]) {
+                sel.addRange(ranges[i]);
+            } else {
+                // According to the draft WHATWG Range spec, the same range may be added to the selection multiple
+                // times. removeRange should only remove the first instance, so the following ensures only the first
+                // instance is removed
+                removed = true;
+            }
+        }
+        if (!sel.rangeCount) {
+            updateEmptySelection(sel);
+        }
+    };
+
+    if (implementsControlRange) {
+        selProto.removeRange = function(range) {
+            if (this.docSelection.type == CONTROL) {
+                var controlRange = this.docSelection.createRange();
+                var rangeElement = getSingleElementFromRange(range);
+
+                // Create a new ControlRange containing all the elements in the selected ControlRange minus the
+                // element contained by the supplied range
+                var doc = dom.getDocument(controlRange.item(0));
+                var newControlRange = dom.getBody(doc).createControlRange();
+                var el, removed = false;
+                for (var i = 0, len = controlRange.length; i < len; ++i) {
+                    el = controlRange.item(i);
+                    if (el !== rangeElement || removed) {
+                        newControlRange.add(controlRange.item(i));
+                    } else {
+                        removed = true;
+                    }
+                }
+                newControlRange.select();
+
+                // Update the wrapped selection based on what's now in the native selection
+                updateControlSelection(this);
+            } else {
+                removeRangeManually(this, range);
+            }
+        };
+    } else {
+        selProto.removeRange = function(range) {
+            removeRangeManually(this, range);
+        };
+    }
+
+    // Detecting if a selection is backwards
+    var selectionIsBackwards;
+    if (!useDocumentSelection && selectionHasAnchorAndFocus && api.features.implementsDomRange) {
+        selectionIsBackwards = function(sel) {
+            var backwards = false;
+            if (sel.anchorNode) {
+                backwards = (dom.comparePoints(sel.anchorNode, sel.anchorOffset, sel.focusNode, sel.focusOffset) == 1);
+            }
+            return backwards;
+        };
+
+        selProto.isBackwards = function() {
+            return selectionIsBackwards(this);
+        };
+    } else {
+        selectionIsBackwards = selProto.isBackwards = function() {
+            return false;
+        };
+    }
+
+    // Selection text
+    // This is conformant to the new WHATWG DOM Range draft spec but differs from WebKit and Mozilla's implementation
+    selProto.toString = function() {
+
+        var rangeTexts = [];
+        for (var i = 0, len = this.rangeCount; i < len; ++i) {
+            rangeTexts[i] = "" + this._ranges[i];
+        }
+        return rangeTexts.join("");
+    };
+
+    function assertNodeInSameDocument(sel, node) {
+        if (sel.anchorNode && (dom.getDocument(sel.anchorNode) !== dom.getDocument(node))) {
+            throw new DOMException("WRONG_DOCUMENT_ERR");
+        }
+    }
+
+    // No current browsers conform fully to the HTML 5 draft spec for this method, so Rangy's own method is always used
+    selProto.collapse = function(node, offset) {
+        assertNodeInSameDocument(this, node);
+        var range = api.createRange(dom.getDocument(node));
+        range.collapseToPoint(node, offset);
+        this.removeAllRanges();
+        this.addRange(range);
+        this.isCollapsed = true;
+    };
+
+    selProto.collapseToStart = function() {
+        if (this.rangeCount) {
+            var range = this._ranges[0];
+            this.collapse(range.startContainer, range.startOffset);
+        } else {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    };
+
+    selProto.collapseToEnd = function() {
+        if (this.rangeCount) {
+            var range = this._ranges[this.rangeCount - 1];
+            this.collapse(range.endContainer, range.endOffset);
+        } else {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    };
+
+    // The HTML 5 spec is very specific on how selectAllChildren should be implemented so the native implementation is
+    // never used by Rangy.
+    selProto.selectAllChildren = function(node) {
+        assertNodeInSameDocument(this, node);
+        var range = api.createRange(dom.getDocument(node));
+        range.selectNodeContents(node);
+        this.removeAllRanges();
+        this.addRange(range);
+    };
+
+    selProto.deleteFromDocument = function() {
+        // Sepcial behaviour required for Control selections
+        if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
+            var controlRange = this.docSelection.createRange();
+            var element;
+            while (controlRange.length) {
+                element = controlRange.item(0);
+                controlRange.remove(element);
+                element.parentNode.removeChild(element);
+            }
+            this.refresh();
+        } else if (this.rangeCount) {
+            var ranges = this.getAllRanges();
+            this.removeAllRanges();
+            for (var i = 0, len = ranges.length; i < len; ++i) {
+                ranges[i].deleteContents();
+            }
+            // The HTML5 spec says nothing about what the selection should contain after calling deleteContents on each
+            // range. Firefox moves the selection to where the final selected range was, so we emulate that
+            this.addRange(ranges[len - 1]);
+        }
+    };
+
+    // The following are non-standard extensions
+    selProto.getAllRanges = function() {
+        return this._ranges.slice(0);
+    };
+
+    selProto.setSingleRange = function(range) {
+        this.setRanges( [range] );
+    };
+
+    selProto.containsNode = function(node, allowPartial) {
+        for (var i = 0, len = this._ranges.length; i < len; ++i) {
+            if (this._ranges[i].containsNode(node, allowPartial)) {
+                return true;
+            }
+        }
+        return false;
+    };
+
+    selProto.toHtml = function() {
+        var html = "";
+        if (this.rangeCount) {
+            var container = DomRange.getRangeDocument(this._ranges[0]).createElement("div");
+            for (var i = 0, len = this._ranges.length; i < len; ++i) {
+                container.appendChild(this._ranges[i].cloneContents());
+            }
+            html = container.innerHTML;
+        }
+        return html;
+    };
+
+    function inspect(sel) {
+        var rangeInspects = [];
+        var anchor = new DomPosition(sel.anchorNode, sel.anchorOffset);
+        var focus = new DomPosition(sel.focusNode, sel.focusOffset);
+        var name = (typeof sel.getName == "function") ? sel.getName() : "Selection";
+
+        if (typeof sel.rangeCount != "undefined") {
+            for (var i = 0, len = sel.rangeCount; i < len; ++i) {
+                rangeInspects[i] = DomRange.inspect(sel.getRangeAt(i));
+            }
+        }
+        return "[" + name + "(Ranges: " + rangeInspects.join(", ") +
+                ")(anchor: " + anchor.inspect() + ", focus: " + focus.inspect() + "]";
+
+    }
+
+    selProto.getName = function() {
+        return "WrappedSelection";
+    };
+
+    selProto.inspect = function() {
+        return inspect(this);
+    };
+
+    selProto.detach = function() {
+        this.win[windowPropertyName] = null;
+        this.win = this.anchorNode = this.focusNode = null;
+    };
+
+    WrappedSelection.inspect = inspect;
+
+    api.Selection = WrappedSelection;
+
+    api.selectionPrototype = selProto;
+
+    api.addCreateMissingNativeApiListener(function(win) {
+        if (typeof win.getSelection == "undefined") {
+            win.getSelection = function() {
+                return api.getSelection(this);
+            };
+        }
+        win = null;
+    });
+});
+
+/**
+ * @license CSS Class Applier module for Rangy.
+ * Adds, removes and toggles CSS classes on Ranges and Selections
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("CssClassApplier", function(api, module) {
+    api.requireModules( ["WrappedSelection", "WrappedRange"] );
+
+    var dom = api.dom;
+
+
+
+    var defaultTagName = "span";
+
+    function trim(str) {
+        return str.replace(/^\s\s*/, "").replace(/\s\s*$/, "");
+    }
+
+    function hasClass(el, cssClass) {
+        return el.className && new RegExp("(?:^|\\s)" + cssClass + "(?:\\s|$)").test(el.className);
+    }
+
+    function addClass(el, cssClass) {
+        if (el.className) {
+            if (!hasClass(el, cssClass)) {
+                el.className += " " + cssClass;
+            }
+        } else {
+            el.className = cssClass;
+        }
+    }
+
+    var removeClass = (function() {
+        function replacer(matched, whiteSpaceBefore, whiteSpaceAfter) {
+            return (whiteSpaceBefore && whiteSpaceAfter) ? " " : "";
+        }
+
+        return function(el, cssClass) {
+            if (el.className) {
+                el.className = el.className.replace(new RegExp("(?:^|\\s)" + cssClass + "(?:\\s|$)"), replacer);
+            }
+        };
+    })();
+
+    function sortClassName(className) {
+        return className.split(/\s+/).sort().join(" ");
+    }
+
+    function getSortedClassName(el) {
+        return sortClassName(el.className);
+    }
+
+    function haveSameClasses(el1, el2) {
+        return getSortedClassName(el1) == getSortedClassName(el2);
+    }
+
+    function replaceWithOwnChildren(el) {
+
+        var parent = el.parentNode;
+        while (el.hasChildNodes()) {
+            parent.insertBefore(el.firstChild, el);
+        }
+        parent.removeChild(el);
+    }
+
+    function rangeSelectsAnyText(range, textNode) {
+        var textRange = range.cloneRange();
+        textRange.selectNodeContents(textNode);
+
+        var intersectionRange = textRange.intersection(range);
+        var text = intersectionRange ? intersectionRange.toString() : "";
+        textRange.detach();
+
+        return text != "";
+    }
+
+    function getEffectiveTextNodes(range) {
+        return range.getNodes([3], function(textNode) {
+            return rangeSelectsAnyText(range, textNode);
+        });
+    }
+
+    function elementsHaveSameNonClassAttributes(el1, el2) {
+        if (el1.attributes.length != el2.attributes.length) return false;
+        for (var i = 0, len = el1.attributes.length, attr1, attr2, name; i < len; ++i) {
+            attr1 = el1.attributes[i];
+            name = attr1.name;
+            if (name != "class") {
+                attr2 = el2.attributes.getNamedItem(name);
+                if (attr1.specified != attr2.specified) return false;
+                if (attr1.specified && attr1.nodeValue !== attr2.nodeValue) return false;
+            }
+        }
+        return true;
+    }
+
+    function elementHasNonClassAttributes(el, exceptions) {
+        for (var i = 0, len = el.attributes.length, attrName; i < len; ++i) {
+            attrName = el.attributes[i].name;
+            if ( !(exceptions && dom.arrayContains(exceptions, attrName)) && el.attributes[i].specified && attrName != "class") {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    function elementHasProps(el, props) {
+        for (var p in props) {
+            if (props.hasOwnProperty(p) && el[p] !== props[p]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    var getComputedStyleProperty;
+
+    if (typeof window.getComputedStyle != "undefined") {
+        getComputedStyleProperty = function(el, propName) {
+            return dom.getWindow(el).getComputedStyle(el, null)[propName];
+        };
+    } else if (typeof document.documentElement.currentStyle != "undefined") {
+        getComputedStyleProperty = function(el, propName) {
+            return el.currentStyle[propName];
+        };
+    } else {
+        module.fail("No means of obtaining computed style properties found");
+    }
+
+    var isEditableElement;
+
+    (function() {
+        var testEl = document.createElement("div");
+        if (typeof testEl.isContentEditable == "boolean") {
+            isEditableElement = function(node) {
+                return node && node.nodeType == 1 && node.isContentEditable;
+            };
+        } else {
+            isEditableElement = function(node) {
+                if (!node || node.nodeType != 1 || node.contentEditable == "false") {
+                    return false;
+                }
+                return node.contentEditable == "true" || isEditableElement(node.parentNode);
+            };
+        }
+    })();
+
+    function isEditingHost(node) {
+        var parent;
+        return node && node.nodeType == 1
+            && (( (parent = node.parentNode) && parent.nodeType == 9 && parent.designMode == "on")
+            || (isEditableElement(node) && !isEditableElement(node.parentNode)));
+    }
+
+    function isEditable(node) {
+        return (isEditableElement(node) || (node.nodeType != 1 && isEditableElement(node.parentNode))) && !isEditingHost(node);
+    }
+
+    var inlineDisplayRegex = /^inline(-block|-table)?$/i;
+
+    function isNonInlineElement(node) {
+        return node && node.nodeType == 1 && !inlineDisplayRegex.test(getComputedStyleProperty(node, "display"));
+    }
+
+    // White space characters as defined by HTML 4 (http://www.w3.org/TR/html401/struct/text.html)
+    var htmlNonWhiteSpaceRegex = /[^\r\n\t\f \u200B]/;
+
+    function isUnrenderedWhiteSpaceNode(node) {
+        if (node.data.length == 0) {
+            return true;
+        }
+        if (htmlNonWhiteSpaceRegex.test(node.data)) {
+            return false;
+        }
+        var cssWhiteSpace = getComputedStyleProperty(node.parentNode, "whiteSpace");
+        switch (cssWhiteSpace) {
+            case "pre":
+            case "pre-wrap":
+            case "-moz-pre-wrap":
+                return false;
+            case "pre-line":
+                if (/[\r\n]/.test(node.data)) {
+                    return false;
+                }
+        }
+
+        // We now have a whitespace-only text node that may be rendered depending on its context. If it is adjacent to a
+        // non-inline element, it will not be rendered. This seems to be a good enough definition.
+        return isNonInlineElement(node.previousSibling) || isNonInlineElement(node.nextSibling);
+    }
+
+    function isSplitPoint(node, offset) {
+        if (dom.isCharacterDataNode(node)) {
+            if (offset == 0) {
+                return !!node.previousSibling;
+            } else if (offset == node.length) {
+                return !!node.nextSibling;
+            } else {
+                return true;
+            }
+        }
+
+        return offset > 0 && offset < node.childNodes.length;
+    }
+
+    function splitNodeAt(node, descendantNode, descendantOffset, rangesToPreserve) {
+        var newNode;
+        var splitAtStart = (descendantOffset == 0);
+
+        if (dom.isAncestorOf(descendantNode, node)) {
+
+            return node;
+        }
+
+        if (dom.isCharacterDataNode(descendantNode)) {
+            if (descendantOffset == 0) {
+                descendantOffset = dom.getNodeIndex(descendantNode);
+                descendantNode = descendantNode.parentNode;
+            } else if (descendantOffset == descendantNode.length) {
+                descendantOffset = dom.getNodeIndex(descendantNode) + 1;
+                descendantNode = descendantNode.parentNode;
+            } else {
+                throw module.createError("splitNodeAt should not be called with offset in the middle of a data node ("
+                    + descendantOffset + " in " + descendantNode.data);
+            }
+        }
+
+        if (isSplitPoint(descendantNode, descendantOffset)) {
+            if (!newNode) {
+                newNode = descendantNode.cloneNode(false);
+                if (newNode.id) {
+                    newNode.removeAttribute("id");
+                }
+                var child;
+                while ((child = descendantNode.childNodes[descendantOffset])) {
+                    newNode.appendChild(child);
+                }
+                dom.insertAfter(newNode, descendantNode);
+            }
+            return (descendantNode == node) ? newNode : splitNodeAt(node, newNode.parentNode, dom.getNodeIndex(newNode), rangesToPreserve);
+        } else if (node != descendantNode) {
+            newNode = descendantNode.parentNode;
+
+            // Work out a new split point in the parent node
+            var newNodeIndex = dom.getNodeIndex(descendantNode);
+
+            if (!splitAtStart) {
+                newNodeIndex++;
+            }
+            return splitNodeAt(node, newNode, newNodeIndex, rangesToPreserve);
+        }
+        return node;
+    }
+
+    function areElementsMergeable(el1, el2) {
+        return el1.tagName == el2.tagName && haveSameClasses(el1, el2) && elementsHaveSameNonClassAttributes(el1, el2);
+    }
+
+    function createAdjacentMergeableTextNodeGetter(forward) {
+        var propName = forward ? "nextSibling" : "previousSibling";
+
+        return function(textNode, checkParentElement) {
+            var el = textNode.parentNode;
+            var adjacentNode = textNode[propName];
+            if (adjacentNode) {
+                // Can merge if the node's previous/next sibling is a text node
+                if (adjacentNode && adjacentNode.nodeType == 3) {
+                    return adjacentNode;
+                }
+            } else if (checkParentElement) {
+                // Compare text node parent element with its sibling
+                adjacentNode = el[propName];
+
+                if (adjacentNode && adjacentNode.nodeType == 1 && areElementsMergeable(el, adjacentNode)) {
+                    return adjacentNode[forward ? "firstChild" : "lastChild"];
+                }
+            }
+            return null;
+        }
+    }
+
+    var getPreviousMergeableTextNode = createAdjacentMergeableTextNodeGetter(false),
+        getNextMergeableTextNode = createAdjacentMergeableTextNodeGetter(true);
+
+
+    function Merge(firstNode) {
+        this.isElementMerge = (firstNode.nodeType == 1);
+        this.firstTextNode = this.isElementMerge ? firstNode.lastChild : firstNode;
+        this.textNodes = [this.firstTextNode];
+    }
+
+    Merge.prototype = {
+        doMerge: function() {
+            var textBits = [], textNode, parent, text;
+            for (var i = 0, len = this.textNodes.length; i < len; ++i) {
+                textNode = this.textNodes[i];
+                parent = textNode.parentNode;
+                textBits[i] = textNode.data;
+                if (i) {
+                    parent.removeChild(textNode);
+                    if (!parent.hasChildNodes()) {
+                        parent.parentNode.removeChild(parent);
+                    }
+                }
+            }
+            this.firstTextNode.data = text = textBits.join("");
+            return text;
+        },
+
+        getLength: function() {
+            var i = this.textNodes.length, len = 0;
+            while (i--) {
+                len += this.textNodes[i].length;
+            }
+            return len;
+        },
+
+        toString: function() {
+            var textBits = [];
+            for (var i = 0, len = this.textNodes.length; i < len; ++i) {
+                textBits[i] = "'" + this.textNodes[i].data + "'";
+            }
+            return "[Merge(" + textBits.join(",") + ")]";
+        }
+    };
+
+    var optionProperties = ["elementTagName", "ignoreWhiteSpace", "applyToEditableOnly"];
+
+    // Allow "class" as a property name in object properties
+    var mappedPropertyNames = {"class" : "className"};
+
+    function CssClassApplier(cssClass, options, tagNames) {
+        this.cssClass = cssClass;
+        var normalize, i, len, propName;
+
+        var elementPropertiesFromOptions = null;
+
+        // Initialize from options object
+        if (typeof options == "object" && options !== null) {
+            tagNames = options.tagNames;
+            elementPropertiesFromOptions = options.elementProperties;
+
+            for (i = 0; propName = optionProperties[i++]; ) {
+                if (options.hasOwnProperty(propName)) {
+                    this[propName] = options[propName];
+                }
+            }
+            normalize = options.normalize;
+        } else {
+            normalize = options;
+        }
+
+        // Backwards compatibility: the second parameter can also be a Boolean indicating whether normalization
+        this.normalize = (typeof normalize == "undefined") ? true : normalize;
+
+        // Initialize element properties and attribute exceptions
+        this.attrExceptions = [];
+        var el = document.createElement(this.elementTagName);
+        this.elementProperties = {};
+        for (var p in elementPropertiesFromOptions) {
+            if (elementPropertiesFromOptions.hasOwnProperty(p)) {
+                // Map "class" to "className"
+                if (mappedPropertyNames.hasOwnProperty(p)) {
+                    p = mappedPropertyNames[p];
+                }
+                el[p] = elementPropertiesFromOptions[p];
+
+                // Copy the property back from the dummy element so that later comparisons to check whether elements
+                // may be removed are checking against the right value. For example, the href property of an element
+                // returns a fully qualified URL even if it was previously assigned a relative URL.
+                this.elementProperties[p] = el[p];
+                this.attrExceptions.push(p);
+            }
+        }
+
+        this.elementSortedClassName = this.elementProperties.hasOwnProperty("className") ?
+            sortClassName(this.elementProperties.className + " " + cssClass) : cssClass;
+
+        // Initialize tag names
+        this.applyToAnyTagName = false;
+        var type = typeof tagNames;
+        if (type == "string") {
+            if (tagNames == "*") {
+                this.applyToAnyTagName = true;
+            } else {
+                this.tagNames = trim(tagNames.toLowerCase()).split(/\s*,\s*/);
+            }
+        } else if (type == "object" && typeof tagNames.length == "number") {
+            this.tagNames = [];
+            for (i = 0, len = tagNames.length; i < len; ++i) {
+                if (tagNames[i] == "*") {
+                    this.applyToAnyTagName = true;
+                } else {
+                    this.tagNames.push(tagNames[i].toLowerCase());
+                }
+            }
+        } else {
+            this.tagNames = [this.elementTagName];
+        }
+    }
+
+    CssClassApplier.prototype = {
+        elementTagName: defaultTagName,
+        elementProperties: {},
+        ignoreWhiteSpace: true,
+        applyToEditableOnly: false,
+
+        hasClass: function(node) {
+            return node.nodeType == 1 && dom.arrayContains(this.tagNames, node.tagName.toLowerCase()) && hasClass(node, this.cssClass);
+        },
+
+        getSelfOrAncestorWithClass: function(node) {
+            while (node) {
+                if (this.hasClass(node, this.cssClass)) {
+                    return node;
+                }
+                node = node.parentNode;
+            }
+            return null;
+        },
+
+        isModifiable: function(node) {
+            return !this.applyToEditableOnly || isEditable(node);
+        },
+
+        // White space adjacent to an unwrappable node can be ignored for wrapping
+        isIgnorableWhiteSpaceNode: function(node) {
+            return this.ignoreWhiteSpace && node && node.nodeType == 3 && isUnrenderedWhiteSpaceNode(node);
+        },
+
+        // Normalizes nodes after applying a CSS class to a Range.
+        postApply: function(textNodes, range, isUndo) {
+
+            var firstNode = textNodes[0], lastNode = textNodes[textNodes.length - 1];
+
+            var merges = [], currentMerge;
+
+            var rangeStartNode = firstNode, rangeEndNode = lastNode;
+            var rangeStartOffset = 0, rangeEndOffset = lastNode.length;
+
+            var textNode, precedingTextNode;
+
+            for (var i = 0, len = textNodes.length; i < len; ++i) {
+                textNode = textNodes[i];
+                precedingTextNode = getPreviousMergeableTextNode(textNode, !isUndo);
+
+                if (precedingTextNode) {
+                    if (!currentMerge) {
+                        currentMerge = new Merge(precedingTextNode);
+                        merges.push(currentMerge);
+                    }
+                    currentMerge.textNodes.push(textNode);
+                    if (textNode === firstNode) {
+                        rangeStartNode = currentMerge.firstTextNode;
+                        rangeStartOffset = rangeStartNode.length;
+                    }
+                    if (textNode === lastNode) {
+                        rangeEndNode = currentMerge.firstTextNode;
+                        rangeEndOffset = currentMerge.getLength();
+                    }
+                } else {
+                    currentMerge = null;
+                }
+            }
+
+            // Test whether the first node after the range needs merging
+            var nextTextNode = getNextMergeableTextNode(lastNode, !isUndo);
+
+            if (nextTextNode) {
+                if (!currentMerge) {
+                    currentMerge = new Merge(lastNode);
+                    merges.push(currentMerge);
+                }
+                currentMerge.textNodes.push(nextTextNode);
+            }
+
+            // Do the merges
+            if (merges.length) {
+
+                for (i = 0, len = merges.length; i < len; ++i) {
+                    merges[i].doMerge();
+                }
+
+
+                // Set the range boundaries
+                range.setStart(rangeStartNode, rangeStartOffset);
+                range.setEnd(rangeEndNode, rangeEndOffset);
+            }
+
+        },
+
+        createContainer: function(doc) {
+            var el = doc.createElement(this.elementTagName);
+            api.util.extend(el, this.elementProperties);
+            addClass(el, this.cssClass);
+            return el;
+        },
+
+        applyToTextNode: function(textNode) {
+
+
+            var parent = textNode.parentNode;
+            if (parent.childNodes.length == 1 && dom.arrayContains(this.tagNames, parent.tagName.toLowerCase())) {
+                addClass(parent, this.cssClass);
+            } else {
+                var el = this.createContainer(dom.getDocument(textNode));
+                textNode.parentNode.insertBefore(el, textNode);
+                el.appendChild(textNode);
+            }
+
+        },
+
+        isRemovable: function(el) {
+            return el.tagName.toLowerCase() == this.elementTagName
+                    && getSortedClassName(el) == this.elementSortedClassName
+                    && elementHasProps(el, this.elementProperties)
+                    && !elementHasNonClassAttributes(el, this.attrExceptions)
+                    && this.isModifiable(el);
+        },
+
+        undoToTextNode: function(textNode, range, ancestorWithClass) {
+
+            if (!range.containsNode(ancestorWithClass)) {
+                // Split out the portion of the ancestor from which we can remove the CSS class
+                //var parent = ancestorWithClass.parentNode, index = dom.getNodeIndex(ancestorWithClass);
+                var ancestorRange = range.cloneRange();
+                ancestorRange.selectNode(ancestorWithClass);
+
+                if (ancestorRange.isPointInRange(range.endContainer, range.endOffset)/* && isSplitPoint(range.endContainer, range.endOffset)*/) {
+                    splitNodeAt(ancestorWithClass, range.endContainer, range.endOffset, [range]);
+                    range.setEndAfter(ancestorWithClass);
+                }
+                if (ancestorRange.isPointInRange(range.startContainer, range.startOffset)/* && isSplitPoint(range.startContainer, range.startOffset)*/) {
+                    ancestorWithClass = splitNodeAt(ancestorWithClass, range.startContainer, range.startOffset, [range]);
+                }
+            }
+
+            if (this.isRemovable(ancestorWithClass)) {
+                replaceWithOwnChildren(ancestorWithClass);
+            } else {
+                removeClass(ancestorWithClass, this.cssClass);
+            }
+        },
+
+        applyToRange: function(range) {
+            range.splitBoundaries();
+            var textNodes = getEffectiveTextNodes(range);
+
+            if (textNodes.length) {
+                var textNode;
+
+                for (var i = 0, len = textNodes.length; i < len; ++i) {
+                    textNode = textNodes[i];
+
+                    if (!this.isIgnorableWhiteSpaceNode(textNode) && !this.getSelfOrAncestorWithClass(textNode)
+                            && this.isModifiable(textNode)) {
+                        this.applyToTextNode(textNode);
+                    }
+                }
+                range.setStart(textNodes[0], 0);
+                textNode = textNodes[textNodes.length - 1];
+                range.setEnd(textNode, textNode.length);
+                if (this.normalize) {
+                    this.postApply(textNodes, range, false);
+                }
+            }
+        },
+
+        applyToSelection: function(win) {
+
+            win = win || window;
+            var sel = api.getSelection(win);
+
+            var range, ranges = sel.getAllRanges();
+            sel.removeAllRanges();
+            var i = ranges.length;
+            while (i--) {
+                range = ranges[i];
+                this.applyToRange(range);
+                sel.addRange(range);
+            }
+
+        },
+
+        undoToRange: function(range) {
+
+            range.splitBoundaries();
+            var textNodes = getEffectiveTextNodes(range);
+            var textNode, ancestorWithClass;
+            var lastTextNode = textNodes[textNodes.length - 1];
+
+            if (textNodes.length) {
+                for (var i = 0, len = textNodes.length; i < len; ++i) {
+                    textNode = textNodes[i];
+                    ancestorWithClass = this.getSelfOrAncestorWithClass(textNode);
+                    if (ancestorWithClass && this.isModifiable(textNode)) {
+                        this.undoToTextNode(textNode, range, ancestorWithClass);
+                    }
+
+                    // Ensure the range is still valid
+                    range.setStart(textNodes[0], 0);
+                    range.setEnd(lastTextNode, lastTextNode.length);
+                }
+
+
+
+                if (this.normalize) {
+                    this.postApply(textNodes, range, true);
+                }
+            }
+        },
+
+        undoToSelection: function(win) {
+            win = win || window;
+            var sel = api.getSelection(win);
+            var ranges = sel.getAllRanges(), range;
+            sel.removeAllRanges();
+            for (var i = 0, len = ranges.length; i < len; ++i) {
+                range = ranges[i];
+                this.undoToRange(range);
+                sel.addRange(range);
+            }
+        },
+
+        getTextSelectedByRange: function(textNode, range) {
+            var textRange = range.cloneRange();
+            textRange.selectNodeContents(textNode);
+
+            var intersectionRange = textRange.intersection(range);
+            var text = intersectionRange ? intersectionRange.toString() : "";
+            textRange.detach();
+
+            return text;
+        },
+
+        isAppliedToRange: function(range) {
+            if (range.collapsed) {
+                return !!this.getSelfOrAncestorWithClass(range.commonAncestorContainer);
+            } else {
+                var textNodes = range.getNodes( [3] );
+                for (var i = 0, textNode; textNode = textNodes[i++]; ) {
+                    if (!this.isIgnorableWhiteSpaceNode(textNode) && rangeSelectsAnyText(range, textNode)
+                            && this.isModifiable(textNode) && !this.getSelfOrAncestorWithClass(textNode)) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+        },
+
+        isAppliedToSelection: function(win) {
+            win = win || window;
+            var sel = api.getSelection(win);
+            var ranges = sel.getAllRanges();
+            var i = ranges.length;
+            while (i--) {
+                if (!this.isAppliedToRange(ranges[i])) {
+                    return false;
+                }
+            }
+
+            return true;
+        },
+
+        toggleRange: function(range) {
+            if (this.isAppliedToRange(range)) {
+                this.undoToRange(range);
+            } else {
+                this.applyToRange(range);
+            }
+        },
+
+        toggleSelection: function(win) {
+            if (this.isAppliedToSelection(win)) {
+                this.undoToSelection(win);
+            } else {
+                this.applyToSelection(win);
+            }
+        },
+
+        detach: function() {}
+    };
+
+    function createCssClassApplier(cssClass, options, tagNames) {
+        return new CssClassApplier(cssClass, options, tagNames);
+    }
+
+    CssClassApplier.util = {
+        hasClass: hasClass,
+        addClass: addClass,
+        removeClass: removeClass,
+        hasSameClasses: haveSameClasses,
+        replaceWithOwnChildren: replaceWithOwnChildren,
+        elementsHaveSameNonClassAttributes: elementsHaveSameNonClassAttributes,
+        elementHasNonClassAttributes: elementHasNonClassAttributes,
+        splitNodeAt: splitNodeAt,
+        isEditableElement: isEditableElement,
+        isEditingHost: isEditingHost,
+        isEditable: isEditable
+    };
+
+    api.CssClassApplier = CssClassApplier;
+    api.createCssClassApplier = createCssClassApplier;
+});
+
+/**
+ * @license Selection save and restore module for Rangy.
+ * Saves and restores user selections using marker invisible elements in the DOM.
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("SaveRestore", function(api, module) {
+    api.requireModules( ["DomUtil", "DomRange", "WrappedRange"] );
+
+    var dom = api.dom;
+
+    var markerTextChar = "\ufeff";
+
+    function gEBI(id, doc) {
+        return (doc || document).getElementById(id);
+    }
+
+    function insertRangeBoundaryMarker(range, atStart) {
+        var markerId = "selectionBoundary_" + (+new Date()) + "_" + ("" + Math.random()).slice(2);
+        var markerEl;
+        var doc = dom.getDocument(range.startContainer);
+
+        // Clone the Range and collapse to the appropriate boundary point
+        var boundaryRange = range.cloneRange();
+        boundaryRange.collapse(atStart);
+
+        // Create the marker element containing a single invisible character using DOM methods and insert it
+        markerEl = doc.createElement("span");
+        markerEl.id = markerId;
+        markerEl.style.lineHeight = "0";
+        markerEl.style.display = "none";
+        markerEl.className = "rangySelectionBoundary";
+        markerEl.appendChild(doc.createTextNode(markerTextChar));
+
+        boundaryRange.insertNode(markerEl);
+        boundaryRange.detach();
+        return markerEl;
+    }
+
+    function setRangeBoundary(doc, range, markerId, atStart) {
+        var markerEl = gEBI(markerId, doc);
+        if (markerEl) {
+            range[atStart ? "setStartBefore" : "setEndBefore"](markerEl);
+            markerEl.parentNode.removeChild(markerEl);
+        } else {
+            module.warn("Marker element has been removed. Cannot restore selection.");
+        }
+    }
+
+    function compareRanges(r1, r2) {
+        return r2.compareBoundaryPoints(r1.START_TO_START, r1);
+    }
+
+    function saveSelection(win) {
+        win = win || window;
+        var doc = win.document;
+        if (!api.isSelectionValid(win)) {
+            module.warn("Cannot save selection. This usually happens when the selection is collapsed and the selection document has lost focus.");
+            return;
+        }
+        var sel = api.getSelection(win);
+        var ranges = sel.getAllRanges();
+        var rangeInfos = [], startEl, endEl, range;
+
+        // Order the ranges by position within the DOM, latest first
+        ranges.sort(compareRanges);
+
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            range = ranges[i];
+            if (range.collapsed) {
+                endEl = insertRangeBoundaryMarker(range, false);
+                rangeInfos.push({
+                    markerId: endEl.id,
+                    collapsed: true
+                });
+            } else {
+                endEl = insertRangeBoundaryMarker(range, false);
+                startEl = insertRangeBoundaryMarker(range, true);
+
+                rangeInfos[i] = {
+                    startMarkerId: startEl.id,
+                    endMarkerId: endEl.id,
+                    collapsed: false,
+                    backwards: ranges.length == 1 && sel.isBackwards()
+                };
+            }
+        }
+
+        // Now that all the markers are in place and DOM manipulation over, adjust each range's boundaries to lie
+        // between its markers
+        for (i = len - 1; i >= 0; --i) {
+            range = ranges[i];
+            if (range.collapsed) {
+                range.collapseBefore(gEBI(rangeInfos[i].markerId, doc));
+            } else {
+                range.setEndBefore(gEBI(rangeInfos[i].endMarkerId, doc));
+                range.setStartAfter(gEBI(rangeInfos[i].startMarkerId, doc));
+            }
+        }
+
+        // Ensure current selection is unaffected
+        sel.setRanges(ranges);
+        return {
+            win: win,
+            doc: doc,
+            rangeInfos: rangeInfos,
+            restored: false
+        };
+    }
+
+    function restoreSelection(savedSelection, preserveDirection) {
+        if (!savedSelection.restored) {
+            var rangeInfos = savedSelection.rangeInfos;
+            var sel = api.getSelection(savedSelection.win);
+            var ranges = [];
+
+            // Ranges are in reverse order of appearance in the DOM. We want to restore earliest first to avoid
+            // normalization affecting previously restored ranges.
+            for (var len = rangeInfos.length, i = len - 1, rangeInfo, range; i >= 0; --i) {
+                rangeInfo = rangeInfos[i];
+                range = api.createRange(savedSelection.doc);
+                if (rangeInfo.collapsed) {
+                    var markerEl = gEBI(rangeInfo.markerId, savedSelection.doc);
+                    if (markerEl) {
+                        markerEl.style.display = "inline";
+                        var previousNode = markerEl.previousSibling;
+
+                        // Workaround for issue 17
+                        if (previousNode && previousNode.nodeType == 3) {
+                            markerEl.parentNode.removeChild(markerEl);
+                            range.collapseToPoint(previousNode, previousNode.length);
+                        } else {
+                            range.collapseBefore(markerEl);
+                            markerEl.parentNode.removeChild(markerEl);
+                        }
+                    } else {
+                        module.warn("Marker element has been removed. Cannot restore selection.");
+                    }
+                } else {
+                    setRangeBoundary(savedSelection.doc, range, rangeInfo.startMarkerId, true);
+                    setRangeBoundary(savedSelection.doc, range, rangeInfo.endMarkerId, false);
+                }
+
+                // Normalizing range boundaries is only viable if the selection contains only one range. For example,
+                // if the selection contained two ranges that were both contained within the same single text node,
+                // both would alter the same text node when restoring and break the other range.
+                if (len == 1) {
+                    range.normalizeBoundaries();
+                }
+                ranges[i] = range;
+            }
+            if (len == 1 && preserveDirection && api.features.selectionHasExtend && rangeInfos[0].backwards) {
+                sel.removeAllRanges();
+                sel.addRange(ranges[0], true);
+            } else {
+                sel.setRanges(ranges);
+            }
+
+            savedSelection.restored = true;
+        }
+    }
+
+    function removeMarkerElement(doc, markerId) {
+        var markerEl = gEBI(markerId, doc);
+        if (markerEl) {
+            markerEl.parentNode.removeChild(markerEl);
+        }
+    }
+
+    function removeMarkers(savedSelection) {
+        var rangeInfos = savedSelection.rangeInfos;
+        for (var i = 0, len = rangeInfos.length, rangeInfo; i < len; ++i) {
+            rangeInfo = rangeInfos[i];
+            if (rangeInfo.collapsed) {
+                removeMarkerElement(savedSelection.doc, rangeInfo.markerId);
+            } else {
+                removeMarkerElement(savedSelection.doc, rangeInfo.startMarkerId);
+                removeMarkerElement(savedSelection.doc, rangeInfo.endMarkerId);
+            }
+        }
+    }
+
+    api.saveSelection = saveSelection;
+    api.restoreSelection = restoreSelection;
+    api.removeMarkerElement = removeMarkerElement;
+    api.removeMarkers = removeMarkers;
+});
+
+/**
+ * @license Serializer module for Rangy.
+ * Serializes Ranges and Selections. An example use would be to store a user's selection on a particular page in a
+ * cookie or local storage and restore it on the user's next visit to the same page.
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("Serializer", function(api, module) {
+    api.requireModules( ["WrappedSelection", "WrappedRange"] );
+    var UNDEF = "undefined";
+
+    // encodeURIComponent and decodeURIComponent are required for cookie handling
+    if (typeof encodeURIComponent == UNDEF || typeof decodeURIComponent == UNDEF) {
+        module.fail("Global object is missing encodeURIComponent and/or decodeURIComponent method");
+    }
+
+    // Checksum for checking whether range can be serialized
+    var crc32 = (function() {
+        function utf8encode(str) {
+            var utf8CharCodes = [];
+
+            for (var i = 0, len = str.length, c; i < len; ++i) {
+                c = str.charCodeAt(i);
+                if (c < 128) {
+                    utf8CharCodes.push(c);
+                } else if (c < 2048) {
+                    utf8CharCodes.push((c >> 6) | 192, (c & 63) | 128);
+                } else {
+                    utf8CharCodes.push((c >> 12) | 224, ((c >> 6) & 63) | 128, (c & 63) | 128);
+                }
+            }
+            return utf8CharCodes;
+        }
+
+        var cachedCrcTable = null;
+
+        function buildCRCTable() {
+            var table = [];
+            for (var i = 0, j, crc; i < 256; ++i) {
+                crc = i;
+                j = 8;
+                while (j--) {
+                    if ((crc & 1) == 1) {
+                        crc = (crc >>> 1) ^ 0xEDB88320;
+                    } else {
+                        crc >>>= 1;
+                    }
+                }
+                table[i] = crc >>> 0;
+            }
+            return table;
+        }
+
+        function getCrcTable() {
+            if (!cachedCrcTable) {
+                cachedCrcTable = buildCRCTable();
+            }
+            return cachedCrcTable;
+        }
+
+        return function(str) {
+            var utf8CharCodes = utf8encode(str), crc = -1, crcTable = getCrcTable();
+            for (var i = 0, len = utf8CharCodes.length, y; i < len; ++i) {
+                y = (crc ^ utf8CharCodes[i]) & 0xFF;
+                crc = (crc >>> 8) ^ crcTable[y];
+            }
+            return (crc ^ -1) >>> 0;
+        };
+    })();
+
+    var dom = api.dom;
+
+    function escapeTextForHtml(str) {
+        return str.replace(/</g, "&lt;").replace(/>/g, "&gt;");
+    }
+
+    function nodeToInfoString(node, infoParts) {
+        infoParts = infoParts || [];
+        var nodeType = node.nodeType, children = node.childNodes, childCount = children.length;
+        var nodeInfo = [nodeType, node.nodeName, childCount].join(":");
+        var start = "", end = "";
+        switch (nodeType) {
+            case 3: // Text node
+                start = escapeTextForHtml(node.nodeValue);
+                break;
+            case 8: // Comment
+                start = "<!--" + escapeTextForHtml(node.nodeValue) + "-->";
+                break;
+            default:
+                start = "<" + nodeInfo + ">";
+                end = "</>";
+                break;
+        }
+        if (start) {
+            infoParts.push(start);
+        }
+        for (var i = 0; i < childCount; ++i) {
+            nodeToInfoString(children[i], infoParts);
+        }
+        if (end) {
+            infoParts.push(end);
+        }
+        return infoParts;
+    }
+
+    // Creates a string representation of the specified element's contents that is similar to innerHTML but omits all
+    // attributes and comments and includes child node counts. This is done instead of using innerHTML to work around
+    // IE <= 8's policy of including element properties in attributes, which ruins things by changing an element's
+    // innerHTML whenever the user changes an input within the element.
+    function getElementChecksum(el) {
+        var info = nodeToInfoString(el).join("");
+        return crc32(info).toString(16);
+    }
+
+    function serializePosition(node, offset, rootNode) {
+        var pathBits = [], n = node;
+        rootNode = rootNode || dom.getDocument(node).documentElement;
+        while (n && n != rootNode) {
+            pathBits.push(dom.getNodeIndex(n, true));
+            n = n.parentNode;
+        }
+        return pathBits.join("/") + ":" + offset;
+    }
+
+    function deserializePosition(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var bits = serialized.split(":");
+        var node = rootNode;
+        var nodeIndices = bits[0] ? bits[0].split("/") : [], i = nodeIndices.length, nodeIndex;
+
+        while (i--) {
+            nodeIndex = parseInt(nodeIndices[i], 10);
+            if (nodeIndex < node.childNodes.length) {
+                node = node.childNodes[parseInt(nodeIndices[i], 10)];
+            } else {
+                throw module.createError("deserializePosition failed: node " + dom.inspectNode(node) +
+                        " has no child with index " + nodeIndex + ", " + i);
+            }
+        }
+
+        return new dom.DomPosition(node, parseInt(bits[1], 10));
+    }
+
+    function serializeRange(range, omitChecksum, rootNode) {
+        rootNode = rootNode || api.DomRange.getRangeDocument(range).documentElement;
+        if (!dom.isAncestorOf(rootNode, range.commonAncestorContainer, true)) {
+            throw new Error("serializeRange: range is not wholly contained within specified root node");
+        }
+        var serialized = serializePosition(range.startContainer, range.startOffset, rootNode) + "," +
+            serializePosition(range.endContainer, range.endOffset, rootNode);
+        if (!omitChecksum) {
+            serialized += "{" + getElementChecksum(rootNode) + "}";
+        }
+        return serialized;
+    }
+
+    function deserializeRange(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var result = /^([^,]+),([^,\{]+)({([^}]+)})?$/.exec(serialized);
+        var checksum = result[4], rootNodeChecksum = getElementChecksum(rootNode);
+        if (checksum && checksum !== getElementChecksum(rootNode)) {
+            throw new Error("deserializeRange: checksums of serialized range root node (" + checksum +
+                    ") and target root node (" + rootNodeChecksum + ") do not match");
+        }
+        var start = deserializePosition(result[1], rootNode, doc), end = deserializePosition(result[2], rootNode, doc);
+        var range = api.createRange(doc);
+        range.setStart(start.node, start.offset);
+        range.setEnd(end.node, end.offset);
+        return range;
+    }
+
+    function canDeserializeRange(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var result = /^([^,]+),([^,]+)({([^}]+)})?$/.exec(serialized);
+        var checksum = result[3];
+        return !checksum || checksum === getElementChecksum(rootNode);
+    }
+
+    function serializeSelection(selection, omitChecksum, rootNode) {
+        selection = selection || api.getSelection();
+        var ranges = selection.getAllRanges(), serializedRanges = [];
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            serializedRanges[i] = serializeRange(ranges[i], omitChecksum, rootNode);
+        }
+        return serializedRanges.join("|");
+    }
+
+    function deserializeSelection(serialized, rootNode, win) {
+        if (rootNode) {
+            win = win || dom.getWindow(rootNode);
+        } else {
+            win = win || window;
+            rootNode = win.document.documentElement;
+        }
+        var serializedRanges = serialized.split("|");
+        var sel = api.getSelection(win);
+        var ranges = [];
+
+        for (var i = 0, len = serializedRanges.length; i < len; ++i) {
+            ranges[i] = deserializeRange(serializedRanges[i], rootNode, win.document);
+        }
+        sel.setRanges(ranges);
+
+        return sel;
+    }
+
+    function canDeserializeSelection(serialized, rootNode, win) {
+        var doc;
+        if (rootNode) {
+            doc = win ? win.document : dom.getDocument(rootNode);
+        } else {
+            win = win || window;
+            rootNode = win.document.documentElement;
+        }
+        var serializedRanges = serialized.split("|");
+
+        for (var i = 0, len = serializedRanges.length; i < len; ++i) {
+            if (!canDeserializeRange(serializedRanges[i], rootNode, doc)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+
+    var cookieName = "rangySerializedSelection";
+
+    function getSerializedSelectionFromCookie(cookie) {
+        var parts = cookie.split(/[;,]/);
+        for (var i = 0, len = parts.length, nameVal, val; i < len; ++i) {
+            nameVal = parts[i].split("=");
+            if (nameVal[0].replace(/^\s+/, "") == cookieName) {
+                val = nameVal[1];
+                if (val) {
+                    return decodeURIComponent(val.replace(/\s+$/, ""));
+                }
+            }
+        }
+        return null;
+    }
+
+    function restoreSelectionFromCookie(win) {
+        win = win || window;
+        var serialized = getSerializedSelectionFromCookie(win.document.cookie);
+        if (serialized) {
+            deserializeSelection(serialized, win.doc)
+        }
+    }
+
+    function saveSelectionCookie(win, props) {
+        win = win || window;
+        props = (typeof props == "object") ? props : {};
+        var expires = props.expires ? ";expires=" + props.expires.toUTCString() : "";
+        var path = props.path ? ";path=" + props.path : "";
+        var domain = props.domain ? ";domain=" + props.domain : "";
+        var secure = props.secure ? ";secure" : "";
+        var serialized = serializeSelection(api.getSelection(win));
+        win.document.cookie = encodeURIComponent(cookieName) + "=" + encodeURIComponent(serialized) + expires + path + domain + secure;
+    }
+
+    api.serializePosition = serializePosition;
+    api.deserializePosition = deserializePosition;
+
+    api.serializeRange = serializeRange;
+    api.deserializeRange = deserializeRange;
+    api.canDeserializeRange = canDeserializeRange;
+
+    api.serializeSelection = serializeSelection;
+    api.deserializeSelection = deserializeSelection;
+    api.canDeserializeSelection = canDeserializeSelection;
+
+    api.restoreSelectionFromCookie = restoreSelectionFromCookie;
+    api.saveSelectionCookie = saveSelectionCookie;
+
+    api.getElementChecksum = getElementChecksum;
+});
+YUI.add('moodle-editor_atto-rangy', function (Y, NAME) {
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+if (!rangy.initialized) {
+    rangy.init();
+}
+
+
+}, '@VERSION@', {"requires": []});
diff --git a/lib/editor/atto/yui/src/editor/js/editor.js b/lib/editor/atto/yui/src/editor/js/editor.js
index 11f575543d7..584a7fa4f93 100755
--- a/lib/editor/atto/yui/src/editor/js/editor.js
+++ b/lib/editor/atto/yui/src/editor/js/editor.js
@@ -82,7 +82,7 @@ M.editor_atto = M.editor_atto || {
         'tfoot',
         'ul',
         'video'],
-        
+
     PLACEHOLDER_FONTNAME: 'yui-tmp',
     ALL_NODES_SELECTOR: '[style],font[face]',
     FONT_FAMILY: 'fontFamily',
@@ -138,13 +138,6 @@ M.editor_atto = M.editor_atto || {
      */
     lastselection : null,
 
-    /**
-     * The number of selection ranges when the selection was last recorded.
-     * @param lastselectioncount
-     * @type integer
-     */
-    lastselectioncount : 0,
-
     /**
      * Set to true after the first editor has been initialised.
      *
@@ -567,22 +560,17 @@ M.editor_atto = M.editor_atto || {
      * @return bool
      */
     is_active : function(elementid) {
-        var selection = M.editor_atto.get_selection();
+        var range = rangy.createRange(),
+            editable = M.editor_atto.get_editable_node(elementid),
+            selection = rangy.getSelection();
 
-        if (selection.length && selection.pop) {
-            selection = selection.pop();
+        if (!selection.rangeCount) {
+            return false;
         }
 
-        var node = null;
-        if (selection.parentElement) {
-            node = Y.one(selection.parentElement());
-        } else {
-            node = Y.one(selection.startContainer);
-        }
+        range.selectNode(editable.getDOMNode());
 
-        var editable = M.editor_atto.get_editable_node(elementid);
-
-        return node && editable.contains(node);
+        return range.intersectsRange(selection.getRangeAt(0));
     },
 
     /**
@@ -884,23 +872,12 @@ M.editor_atto = M.editor_atto || {
     /**
      * Create a cross browser selection object that represents a yui node.
      * @param Node yui node for the selection
-     * @return range (browser dependent)
+     * @return rangy.Range[]
      */
     get_selection_from_node: function(node) {
-        var range;
-
-        if (window.getSelection) {
-            range = document.createRange();
-
-            range.setStartBefore(node.getDOMNode());
-            range.setEndAfter(node.getDOMNode());
-            return [range];
-        } else if (document.selection) {
-            range = document.body.createTextRange();
-            range.moveToElementText(node.getDOMNode());
-            return range;
-        }
-        return false;
+        var range = rangy.createRange();
+        range.selectNode(node.getDOMNode());
+        return [range];
     },
 
     /**
@@ -911,10 +888,7 @@ M.editor_atto = M.editor_atto || {
     save_selection : function(event) {
         var elementid = event.elementid;
         if (elementid && this.is_active(elementid)) {
-            var sel = this.get_selection();
-            if (sel.length > 0) {
-                this.selections[elementid] = sel;
-            }
+            this.selections[elementid] = this.get_selection();
         }
     },
 
@@ -934,23 +908,10 @@ M.editor_atto = M.editor_atto || {
 
     /**
      * Get the selection object that can be passed back to set_selection.
-     * @return Range[]|TextRange[] All browsers except IE8 and less will get Range[], IE8 and less will get TextRange[]
+     * @return rangy.Range[]
      */
     get_selection : function() {
-        if (window.getSelection) {
-            var sel = window.getSelection();
-            var ranges = [], i = 0;
-            for (i = 0; i < sel.rangeCount; i++) {
-                ranges.push(sel.getRangeAt(i));
-            }
-            return ranges;
-        } else if (document.selection) {
-            // IE < 9
-            if (document.selection.createRange) {
-                return [document.selection.createRange()];
-            }
-        }
-        return false;
+        return rangy.getSelection().getAllRanges();
     },
 
     /**
@@ -959,18 +920,7 @@ M.editor_atto = M.editor_atto || {
      * @return boolean
      */
     selection_contains_node : function(node) {
-        // TODO: This will break in IE11 . IE11 doesn't provide containsNode and document.selection has been removed.
-        var range, sel;
-        if (window.getSelection) {
-            sel = window.getSelection();
-            if (sel.containsNode) {
-                return sel.containsNode(node.getDOMNode(), true);
-            }
-        }
-        sel = document.selection.createRange();
-        range = sel.duplicate();
-        range.moveToElementText(node.getDOMNode());
-        return sel.inRange(range);
+        return rangy.getSelection().containsNode(node.getDOMNode(), true);
     },
 
     /**
@@ -980,124 +930,72 @@ M.editor_atto = M.editor_atto || {
      * @param {String} elementid
      * @param {String} selector
      * @param {NodeList} selectednodes (Optional) - for performance we can pass this instead of looking it up.
+     * @param {Boolean} requireall (Optional) - used to specify that any "any" match is good enough. Defaults to true.
      * @return {Boolean}
      */
-    selection_filter_matches : function(elementid, selector, selectednodes) {
+    selection_filter_matches : function(elementid, selector, selectednodes, requireall) {
+        if ((typeof requireall) === 'undefined') {
+            requireall = true;
+        }
         if (!selectednodes) {
             // Find this because it was not passed as a param.
             selectednodes = M.editor_atto.get_selected_nodes(elementid);
         }
-        var allmatch = selectednodes.size() > 0;
+        var allmatch = selectednodes.size() > 0, anymatch = false;
         selectednodes.each(function(node){
             // Check each node, if it doesn't match the tags AND is not within the specified tags then fail this thing.
-            if (!allmatch || !node.ancestor(selector, true, '#' + elementid + "editable")) {
-                allmatch = false;
+            if (requireall) {
+                // Check for at least one failure.
+                if (!allmatch || !node.ancestor(selector, true, '#' + elementid + "editable")) {
+                    allmatch = false;
+                }
+            } else {
+                // Check for at least one match.
+                if (!anymatch && node.ancestor(selector, true, '#' + elementid + "editable")) {
+                    anymatch = true;
+                }
             }
         }, this);
-        return allmatch;
+        if (requireall) {
+            return allmatch;
+        } else {
+            return anymatch;
+        }
     },
 
     /**
      * Get the deepest possible list of nodes in the current selection.
      *
-     * Presently this method contains logic to work out what nodes are "selected" by the user.
-     * The user selection may take the form of:
-     *  - text : selected text within a single node, such as double clicking a word.
-     *  - A node : the user has clicked an image or media object that is selectable by clicking upon an element.
-     *  - text + nodes: the user has dragged or used shift + arrows to select a body of content that may include
-     *      both text and/or nodes.
-     * To work out the selected nodes we look at the start and end node. If they are the same then there is only one node
-     * containing selected content.
-     * If they don't match we get the common ancestor of the start and end nodes, and then iterate all child nodes recording
-     * all nodes that appear after the start node and before the end node.
-     *
-     * YUI deal with this in a totally different way to us, they have a method getSelected that gets the selected nodes by
-     * exec'ing a command to add fontname, and then find all nodes that have been affected. They remove the fontname property
-     * before returning the nodes.
-     *
      * @param {String} elementid
      * @return Y.NodeList
      */
     get_selected_nodes : function(elementid) {
-        var nodes = [],
-            results = new Y.NodeList(),
-            points = [],
+        var results = new Y.NodeList(),
+            nodes,
+            selection,
             range,
-            i,
-            sel,
-            start,
-            end,
-            parent,
-            values;
+            node,
+            i;
 
-        // The window.getSelection method is available from IE9 onwards and for all other browsers.
-        if (window.getSelection) {
-            sel = window.getSelection();
-            for (i = 0; i < sel.rangeCount; i++) {
-                range = sel.getRangeAt(i);
-                start = new Y.Node(range.startContainer);
-                end = new Y.Node(range.endContainer);
-                if (start.compareTo(end)) {
-                    // The start and end node are the same node. Only one node is selected. Easy!
-                    nodes.push(end);
-                } else {
-                    // The start and end node are not the same, we have 2..n nodes selected, we'll need to work them out.
-                    // For the time being record them as a pair of points along with the common ancestor.
-                    // First up we need to check the order of the nodes, we need them in the order they appear in the DOM
-                    // however the selection may have been rtl or ltr and in the case of rtl we need to switch the order.
-                    values = this._fix_selected_nodes_from_range(
-                        start,
-                        range.startOffset,
-                        end,
-                        range.endOffset
-                    );
-                    // Ok start and end are in order. Yay!
-                    start = values[0];
-                    end = values[2];
-                    // We calculate the common ancestor here as we should be able to get it from the range object.
-                    if (range.commonAncestorContainer) {
-                        parent = range.commonAncestorContainer;
-                    } else if (range.parentElement) {
-                        parent = range.parentElement();
-                    } else {
-                        parent = this._get_common_parent_from_nodes(start, end);
-                    }
-                    points.push([
-                        start,
-                        end,
-                        parent
-                    ]);
-                }
-            }
-        } else if (document.selection && document.selection.createRange) {
-            // The document.selection.createRange is available in IE only, versions 5.5 through 10 (not IE11).
-            // However s window.getSelection exists in IE9+ this code will only execute in IE 5.5 -> IE 8.
-            // http://msdn.microsoft.com/en-us/library/ie/ms535869(v=vs.85).aspx
-            range = document.selection.createRange();
-            // Create range will return either TextRange object from the current text selection, or a controlRange
-            // collection from the control selection.
-            if (document.selection.type === "Control") {
-                // Its a control collection, well this is easy, its an array of Nodes. All the work has been done for us.
-                for (i = 0; i < range.length; i++) {
-                    nodes.push(new Y.Node(range(i)));
-                }
-            } else {
-                // Its a TextRange, in which case its a text element (nodeType 3) and its parent will be the node containing the
-                // selection.
-                nodes.push(new Y.Node(range.parentElement()));
-            }
+        selection = rangy.getSelection();
+
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        } else {
+            // Empty range.
+            range = rangy.createRange();
         }
-        // Ok we have two array as this point.
-        //  - Nodes is an array containing nodes that are currently highlighted by selection.
-        //  - Points is an array containing start, end, and parent nodes.
-        // For each item in the points array we need to find all nodes containing selected content.
-        for (i in points) {
-            nodes = nodes.concat(this._get_all_nodes_between.apply(this, points[i]));
+
+        if (range.collapsed) {
+            range.selectNode(range.commonAncestorContainer);
         }
-        // Finally for each node we've determined is highlighted we need to check it belongs to the current editable area.
-        for (i in nodes) {
-            if (results.indexOf(nodes[i]) === -1 && nodes[i].ancestor('#' + elementid + "editable")) {
-                results.push(nodes[i]);
+
+        nodes = range.getNodes();
+
+        for (i = 0; i < nodes.length; i++) {
+            node = Y.one(nodes[i]);
+            if (node.ancestor('#' + elementid + "editable")) {
+                results.push(node);
             }
         }
         return results;
@@ -1114,47 +1012,25 @@ M.editor_atto = M.editor_atto || {
      * @returns {Boolean}
      */
     _has_selection_changed : function(e) {
-        var sel,
-            i,
+        var selection = rangy.getSelection(),
             range,
-            bits = [],
-            selectedstr = '',
-            selectioncount = 0;
-        if (window.getSelection) {
-            // Hoorah - working with the alternative is horrid..
-            sel = window.getSelection();
-            selectioncount = sel.rangeCount;
-            for (i = 0; i < selectioncount; i++) {
-                range = sel.getRangeAt(i);
-                bits.push(range.startOffset);
-                bits.push(range.endOffset);
-                bits.push(this._get_node_identifier(range.startContainer));
-                bits.push(this._get_node_identifier(range.endContainer));
-                bits.push('&');
-            }
-        } else if (document.selection && document.selection.createRange) {
-            range = document.selection.createRange();
-            if (range !== null) {
-                if (document.selection.type === "Control") {
-                    // Is a controlRange: http://msdn.microsoft.com/en-us/library/ie/hh826021(v=vs.85).aspx
-                    selectioncount = range.length;
-                    for (i = 0; i < selectioncount; i++) {
-                        bits.push(this._get_node_identifier(range(i)));
-                    }
-                } else {
-                    // Is a TextRange: http://msdn.microsoft.com/en-us/library/ie/ms535872(v=vs.85).aspx
-                    selectioncount = 1;
-                    bits.push(this._get_node_identifier(range.parentElement()));
-                }
+            changed = false;
+
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        } else {
+            // Empty range.
+            range = rangy.createRange();
+        }
+
+        if (this.lastselection) {
+            if (!this.lastselection.equals(range)) {
+                changed = true;
+                return this._fire_selectionchanged(e);
             }
         }
-        selectedstr = bits.join('|');
-        if (this.lastselection !== selectedstr) {
-            this.lastselection = selectedstr;
-            this.lastselectioncount = selectioncount;
-            return this._fire_selectionchanged(e);
-        }
-        return false;
+        this.lastselection = range;
+        return changed;
     },
 
     /**
@@ -1180,230 +1056,25 @@ M.editor_atto = M.editor_atto || {
         });
     },
 
-    /**
-     * Returns the best identifier for the given node that can be found. May not be unique.
-     *
-     * @method _get_node_identifier
-     * @private
-     * @param {Node} node
-     * @returns {string}
-     */
-    _get_node_identifier : function(node) {
-        var uid = (node.nodeType === 3) ? node.length : node.id;
-        return uid || node.className || node.nodeName;
-    },
-
-    /**
-     * Fixes the selection range, normalising it, ordering the start and end by dom position, and correcting for noteType and offset
-     *
-     * Note about offsets:
-     *   If the container is a Node of type Text, Comment, or CDATASection, then the offset is the number of characters from the
-     *   start of the container to the boundary point of the Range.
-     *   For other Node types, the offset is the number of child nodes between the start of the container and the boundary
-     *   point of the Range.
-     *
-     * @method _fix_selected_nodes_from_range
-     * @private
-     * @param {Node} a
-     * @param {integer} aoffset
-     * @param {Node} b
-     * @param {integer} boffset
-     * @returns {[Node, integer, Node, integer]}
-     */
-    _fix_selected_nodes_from_range : function(a, aoffset, b, boffset) {
-        var first,
-            firstoffset,
-            second,
-            secondoffset,
-            searchfunc,
-            acheckend = true,
-            bcheckend = true,
-            checkend = true;
-
-        if (a.get('nodeType') === 1) {
-            a = a.get('childNodes').item(aoffset);
-            acheckend = false;
-        }
-        if (b.get('nodeType') === 1 && boffset > 0) {
-            b = b.get('childNodes').item(boffset - 1);
-            bcheckend = false;
-        }
-        if (a._yuid === b._yuid) {
-            if (aoffset < boffset) {
-                first = a;
-                firstoffset = aoffset;
-                second = b;
-                secondoffset = boffset;
-                checkend = bcheckend;
-            } else {
-                first = b;
-                firstoffset = boffset;
-                second = a;
-                secondoffset = aoffset;
-                checkend = acheckend;
-            }
-        } else {
-            if (a.contains(b)) {
-                first = a;
-                firstoffset = aoffset;
-                second = b;
-                secondoffset = boffset;
-                checkend = bcheckend;
-            } else if (b.contains(a)) {
-                first = b;
-                firstoffset = boffset;
-                second = a;
-                secondoffset = aoffset;
-                checkend = acheckend;
-            } else {
-                searchfunc = function find_first(nodes, x, y) {
-                    var i, result;
-                    for (i in nodes) {
-                        if (nodes[i] === x.getDOMNode()) {
-                            return x;
-                        } else if (nodes[i] === y.getDOMNode()) {
-                            return y;
-                        } else if (nodes[i].nodeType === 1) {
-                            result = find_first(nodes[i].childNodes, x, y);
-                            if (result !== false) {
-                                return result;
-                            }
-                        }
-                    }
-                    return false;
-                };
-                first = searchfunc(this._get_common_parent_from_nodes(a, b).get('childNodes'), a, b) || a;
-                if (first === a) {
-                    firstoffset = aoffset;
-                    second = b;
-                    secondoffset = boffset;
-                    checkend = bcheckend;
-                } else {
-                    firstoffset = boffset;
-                    second = a;
-                    secondoffset = aoffset;
-                    checkend = acheckend;
-                }
-            }
-            if (checkend && second.get('nodeType') === 3 && secondoffset === 0 && second.previous('*', true)) {
-                second = second.previous();
-            }
-        }
-        return [first, firstoffset, second, secondoffset];
-    },
-
-    /**
-     * Returns an array containing all of the nodes in the Dom between the two reference nodes.
-     *
-     * @method _get_all_nodes_between
-     * @private
-     * @param {Node} a
-     * @param {Node} b
-     * @param {Node} parent The common parent of a and b
-     * @returns {Node[]}
-     */
-    _get_all_nodes_between : function(a, b, parent) {
-        var startfound = false,
-            endfound = false,
-            nodes = [],
-            parenthasselectedtext = false;
-        if (a === b || a.contains(b)) {
-            return [a];
-        }
-        if (b.contains(a)) {
-            return [b];
-        }
-        if (!parent) {
-            return [a, b];
-        }
-
-        nodes.push(a);
-        parent.get('childNodes').each(function(node) {
-            if (endfound) {
-                return;
-            }
-            if (!startfound && node === a) {
-                startfound = true;
-            } else if (startfound && !endfound) {
-                if (node === b) {
-                    endfound = true;
-                } else {
-                    if (node.get('nodeType') === 3) {
-                        parenthasselectedtext = true;
-                    } else {
-                        nodes.push(node);
-                        nodes = nodes.compact(node.all('*'));
-                    }
-                }
-            }
-        });
-        nodes.push(b);
-
-        if (parenthasselectedtext) {
-            nodes.unshift(parent);
-        }
-
-        return nodes;
-    },
-
-    /**
-     * Returns the common parent of the two given nodes.
-     *
-     * @method _get_common_parent_from_nodes
-     * @private
-     * @param {Node} a
-     * @param {Node} b
-     * @returns {Node}
-     */
-    _get_common_parent_from_nodes : function(a, b) {
-        var aparents = a.ancestors('*', false, '.' + CSS.CONTENT),
-            bparents = b.ancestors('*', false, '.' + CSS.CONTENT),
-            node;
-        while ((node = aparents.pop())) {
-            if (bparents.indexOf(node) !== -1) {
-                return node;
-            }
-        }
-        return a.ancestor('.' + CSS.CONTENT);
-    },
-
     /**
      * Get the dom node representing the common anscestor of the selection nodes.
      * @return DOMNode or false
      */
     get_selection_parent_node : function() {
-        var selection = M.editor_atto.get_selection();
-        if (selection.length) {
-            selection = selection.pop();
+        var selection = rangy.getSelection();
+        if (selection.rangeCount) {
+            return selection.getRangeAt(0).commonAncestorContainer;
         }
-
-        if (selection.commonAncestorContainer) {
-            return selection.commonAncestorContainer;
-        } else if (selection.parentElement) {
-            return selection.parentElement();
-        }
-        // No selection
         return false;
     },
 
     /**
      * Set the current selection. Used to restore a selection.
+     * @param rangy.Range[] ranges - List of ranges in selection.
      */
-    set_selection : function(selection) {
-        var sel, i;
-
-        if (window.getSelection) {
-            sel = window.getSelection();
-            sel.removeAllRanges();
-            for (i = 0; i < selection.length; i++) {
-                sel.addRange(selection[i]);
-            }
-        } else if (document.selection) {
-            // IE < 9
-            if (selection.select) {
-                selection.select();
-            }
-        }
+    set_selection : function(ranges) {
+        var selection = rangy.getSelection();
+        selection.setRanges(ranges);
     },
 
     /**
@@ -1550,19 +1221,20 @@ M.editor_atto = M.editor_atto || {
 
     /**
      * Inserts the given HTML into the editable content at the currently focused point.
-     * @param {String} html
+     * @param String html
      */
     insert_html_at_focus_point: function(html) {
         // We check document.selection here as the insertHTML exec command wan't available in IE until version 11.
         // In IE document.selection was removed at from version 11. Making it an easy affordable check.
-        if (document.selection && document.selection.createRange) {
-            var range = document.selection.createRange();
-            if (range.pasteHTML) {
-                range.pasteHTML(html);
-            }
-        } else {
-            // All other browsers are great!
-            document.execCommand('insertHTML', false, html);
+        var selection = rangy.getSelection(),
+            range,
+            node = Y.Node.create(html);
+        if (selection.rangeCount) {
+            range = selection.getRangeAt(0);
+        }
+        if (range) {
+            range.deleteContents();
+            range.insertNode(node.getDOMNode());
         }
     },
 
diff --git a/lib/editor/atto/yui/src/editor/meta/editor.json b/lib/editor/atto/yui/src/editor/meta/editor.json
index c32590c9759..214e624d5c6 100644
--- a/lib/editor/atto/yui/src/editor/meta/editor.json
+++ b/lib/editor/atto/yui/src/editor/meta/editor.json
@@ -9,7 +9,8 @@
         "event-simulate",
         "event-custom",
         "yui-throttle",
-        "moodle-core-notification-dialogue"
+        "moodle-core-notification-dialogue",
+        "moodle-editor_atto-rangy"
       ]
   },
   "moodle-editor_atto-editor-shortcut": {
diff --git a/lib/editor/atto/yui/src/rangy/build.json b/lib/editor/atto/yui/src/rangy/build.json
new file mode 100644
index 00000000000..1f62748fa12
--- /dev/null
+++ b/lib/editor/atto/yui/src/rangy/build.json
@@ -0,0 +1,19 @@
+{
+  "name": "moodle-editor_atto-rangy",
+  "builds": {
+    "moodle-editor_atto-rangy": {
+      "prependfiles": [
+        "rangy-core.js",
+        "rangy-cssclassapplier.js",
+        "rangy-selectionsaverestore.js",
+        "rangy-serializer.js"
+      ],
+      "jsfiles": [
+        "init.js"
+      ]
+    }
+  },
+  "shifter": {
+    "lint": false
+  }
+}
diff --git a/lib/editor/atto/yui/src/rangy/js/init.js b/lib/editor/atto/yui/src/rangy/js/init.js
new file mode 100644
index 00000000000..21c20ca51d3
--- /dev/null
+++ b/lib/editor/atto/yui/src/rangy/js/init.js
@@ -0,0 +1,18 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+if (!rangy.initialized) {
+    rangy.init();
+}
diff --git a/lib/editor/atto/yui/src/rangy/js/license.txt b/lib/editor/atto/yui/src/rangy/js/license.txt
new file mode 100644
index 00000000000..2988505a34a
--- /dev/null
+++ b/lib/editor/atto/yui/src/rangy/js/license.txt
@@ -0,0 +1,21 @@
+The MIT License
+
+Copyright (c) 2010 Tim Down
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/lib/editor/atto/yui/src/rangy/js/rangy-core.js b/lib/editor/atto/yui/src/rangy/js/rangy-core.js
new file mode 100644
index 00000000000..a30dd5a8243
--- /dev/null
+++ b/lib/editor/atto/yui/src/rangy/js/rangy-core.js
@@ -0,0 +1,3224 @@
+/**
+ * @license Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+window['rangy'] = (function() {
+
+
+    var OBJECT = "object", FUNCTION = "function", UNDEFINED = "undefined";
+
+    var domRangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
+        "commonAncestorContainer", "START_TO_START", "START_TO_END", "END_TO_START", "END_TO_END"];
+
+    var domRangeMethods = ["setStart", "setStartBefore", "setStartAfter", "setEnd", "setEndBefore",
+        "setEndAfter", "collapse", "selectNode", "selectNodeContents", "compareBoundaryPoints", "deleteContents",
+        "extractContents", "cloneContents", "insertNode", "surroundContents", "cloneRange", "toString", "detach"];
+
+    var textRangeProperties = ["boundingHeight", "boundingLeft", "boundingTop", "boundingWidth", "htmlText", "text"];
+
+    // Subset of TextRange's full set of methods that we're interested in
+    var textRangeMethods = ["collapse", "compareEndPoints", "duplicate", "getBookmark", "moveToBookmark",
+        "moveToElementText", "parentElement", "pasteHTML", "select", "setEndPoint", "getBoundingClientRect"];
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Trio of functions taken from Peter Michaux's article:
+    // http://peter.michaux.ca/articles/feature-detection-state-of-the-art-browser-scripting
+    function isHostMethod(o, p) {
+        var t = typeof o[p];
+        return t == FUNCTION || (!!(t == OBJECT && o[p])) || t == "unknown";
+    }
+
+    function isHostObject(o, p) {
+        return !!(typeof o[p] == OBJECT && o[p]);
+    }
+
+    function isHostProperty(o, p) {
+        return typeof o[p] != UNDEFINED;
+    }
+
+    // Creates a convenience function to save verbose repeated calls to tests functions
+    function createMultiplePropertyTest(testFunc) {
+        return function(o, props) {
+            var i = props.length;
+            while (i--) {
+                if (!testFunc(o, props[i])) {
+                    return false;
+                }
+            }
+            return true;
+        };
+    }
+
+    // Next trio of functions are a convenience to save verbose repeated calls to previous two functions
+    var areHostMethods = createMultiplePropertyTest(isHostMethod);
+    var areHostObjects = createMultiplePropertyTest(isHostObject);
+    var areHostProperties = createMultiplePropertyTest(isHostProperty);
+
+    function isTextRange(range) {
+        return range && areHostMethods(range, textRangeMethods) && areHostProperties(range, textRangeProperties);
+    }
+
+    var api = {
+        version: "1.2.3",
+        initialized: false,
+        supported: true,
+
+        util: {
+            isHostMethod: isHostMethod,
+            isHostObject: isHostObject,
+            isHostProperty: isHostProperty,
+            areHostMethods: areHostMethods,
+            areHostObjects: areHostObjects,
+            areHostProperties: areHostProperties,
+            isTextRange: isTextRange
+        },
+
+        features: {},
+
+        modules: {},
+        config: {
+            alertOnWarn: false,
+            preferTextRange: false
+        }
+    };
+
+    function fail(reason) {
+        window.alert("Rangy not supported in your browser. Reason: " + reason);
+        api.initialized = true;
+        api.supported = false;
+    }
+
+    api.fail = fail;
+
+    function warn(msg) {
+        var warningMessage = "Rangy warning: " + msg;
+        if (api.config.alertOnWarn) {
+            window.alert(warningMessage);
+        } else if (typeof window.console != UNDEFINED && typeof window.console.log != UNDEFINED) {
+            window.console.log(warningMessage);
+        }
+    }
+
+    api.warn = warn;
+
+    if ({}.hasOwnProperty) {
+        api.util.extend = function(o, props) {
+            for (var i in props) {
+                if (props.hasOwnProperty(i)) {
+                    o[i] = props[i];
+                }
+            }
+        };
+    } else {
+        fail("hasOwnProperty not supported");
+    }
+
+    var initListeners = [];
+    var moduleInitializers = [];
+
+    // Initialization
+    function init() {
+        if (api.initialized) {
+            return;
+        }
+        var testRange;
+        var implementsDomRange = false, implementsTextRange = false;
+
+        // First, perform basic feature tests
+
+        if (isHostMethod(document, "createRange")) {
+            testRange = document.createRange();
+            if (areHostMethods(testRange, domRangeMethods) && areHostProperties(testRange, domRangeProperties)) {
+                implementsDomRange = true;
+            }
+            testRange.detach();
+        }
+
+        var body = isHostObject(document, "body") ? document.body : document.getElementsByTagName("body")[0];
+
+        if (body && isHostMethod(body, "createTextRange")) {
+            testRange = body.createTextRange();
+            if (isTextRange(testRange)) {
+                implementsTextRange = true;
+            }
+        }
+
+        if (!implementsDomRange && !implementsTextRange) {
+            fail("Neither Range nor TextRange are implemented");
+        }
+
+        api.initialized = true;
+        api.features = {
+            implementsDomRange: implementsDomRange,
+            implementsTextRange: implementsTextRange
+        };
+
+        // Initialize modules and call init listeners
+        var allListeners = moduleInitializers.concat(initListeners);
+        for (var i = 0, len = allListeners.length; i < len; ++i) {
+            try {
+                allListeners[i](api);
+            } catch (ex) {
+                if (isHostObject(window, "console") && isHostMethod(window.console, "log")) {
+                    window.console.log("Init listener threw an exception. Continuing.", ex);
+                }
+
+            }
+        }
+    }
+
+    // Allow external scripts to initialize this library in case it's loaded after the document has loaded
+    api.init = init;
+
+    // Execute listener immediately if already initialized
+    api.addInitListener = function(listener) {
+        if (api.initialized) {
+            listener(api);
+        } else {
+            initListeners.push(listener);
+        }
+    };
+
+    var createMissingNativeApiListeners = [];
+
+    api.addCreateMissingNativeApiListener = function(listener) {
+        createMissingNativeApiListeners.push(listener);
+    };
+
+    function createMissingNativeApi(win) {
+        win = win || window;
+        init();
+
+        // Notify listeners
+        for (var i = 0, len = createMissingNativeApiListeners.length; i < len; ++i) {
+            createMissingNativeApiListeners[i](win);
+        }
+    }
+
+    api.createMissingNativeApi = createMissingNativeApi;
+
+    /**
+     * @constructor
+     */
+    function Module(name) {
+        this.name = name;
+        this.initialized = false;
+        this.supported = false;
+    }
+
+    Module.prototype.fail = function(reason) {
+        this.initialized = true;
+        this.supported = false;
+
+        throw new Error("Module '" + this.name + "' failed to load: " + reason);
+    };
+
+    Module.prototype.warn = function(msg) {
+        api.warn("Module " + this.name + ": " + msg);
+    };
+
+    Module.prototype.createError = function(msg) {
+        return new Error("Error in Rangy " + this.name + " module: " + msg);
+    };
+
+    api.createModule = function(name, initFunc) {
+        var module = new Module(name);
+        api.modules[name] = module;
+
+        moduleInitializers.push(function(api) {
+            initFunc(api, module);
+            module.initialized = true;
+            module.supported = true;
+        });
+    };
+
+    api.requireModules = function(modules) {
+        for (var i = 0, len = modules.length, module, moduleName; i < len; ++i) {
+            moduleName = modules[i];
+            module = api.modules[moduleName];
+            if (!module || !(module instanceof Module)) {
+                throw new Error("Module '" + moduleName + "' not found");
+            }
+            if (!module.supported) {
+                throw new Error("Module '" + moduleName + "' not supported");
+            }
+        }
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Wait for document to load before running tests
+
+    var docReady = false;
+
+    var loadHandler = function(e) {
+
+        if (!docReady) {
+            docReady = true;
+            if (!api.initialized) {
+                init();
+            }
+        }
+    };
+
+    // Test whether we have window and document objects that we will need
+    if (typeof window == UNDEFINED) {
+        fail("No window found");
+        return;
+    }
+    if (typeof document == UNDEFINED) {
+        fail("No document found");
+        return;
+    }
+
+    if (isHostMethod(document, "addEventListener")) {
+        document.addEventListener("DOMContentLoaded", loadHandler, false);
+    }
+
+    // Add a fallback in case the DOMContentLoaded event isn't supported
+    if (isHostMethod(window, "addEventListener")) {
+        window.addEventListener("load", loadHandler, false);
+    } else if (isHostMethod(window, "attachEvent")) {
+        window.attachEvent("onload", loadHandler);
+    } else {
+        fail("Window does not have required addEventListener or attachEvent method");
+    }
+
+    return api;
+})();
+rangy.createModule("DomUtil", function(api, module) {
+
+    var UNDEF = "undefined";
+    var util = api.util;
+
+    // Perform feature tests
+    if (!util.areHostMethods(document, ["createDocumentFragment", "createElement", "createTextNode"])) {
+        module.fail("document missing a Node creation method");
+    }
+
+    if (!util.isHostMethod(document, "getElementsByTagName")) {
+        module.fail("document missing getElementsByTagName method");
+    }
+
+    var el = document.createElement("div");
+    if (!util.areHostMethods(el, ["insertBefore", "appendChild", "cloneNode"] ||
+            !util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]))) {
+        module.fail("Incomplete Element implementation");
+    }
+
+    // innerHTML is required for Range's createContextualFragment method
+    if (!util.isHostProperty(el, "innerHTML")) {
+        module.fail("Element is missing innerHTML property");
+    }
+
+    var textNode = document.createTextNode("test");
+    if (!util.areHostMethods(textNode, ["splitText", "deleteData", "insertData", "appendData", "cloneNode"] ||
+            !util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]) ||
+            !util.areHostProperties(textNode, ["data"]))) {
+        module.fail("Incomplete Text Node implementation");
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Removed use of indexOf because of a bizarre bug in Opera that is thrown in one of the Acid3 tests. I haven't been
+    // able to replicate it outside of the test. The bug is that indexOf returns -1 when called on an Array that
+    // contains just the document as a single element and the value searched for is the document.
+    var arrayContains = /*Array.prototype.indexOf ?
+        function(arr, val) {
+            return arr.indexOf(val) > -1;
+        }:*/
+
+        function(arr, val) {
+            var i = arr.length;
+            while (i--) {
+                if (arr[i] === val) {
+                    return true;
+                }
+            }
+            return false;
+        };
+
+    // Opera 11 puts HTML elements in the null namespace, it seems, and IE 7 has undefined namespaceURI
+    function isHtmlNamespace(node) {
+        var ns;
+        return typeof node.namespaceURI == UNDEF || ((ns = node.namespaceURI) === null || ns == "http://www.w3.org/1999/xhtml");
+    }
+
+    function parentElement(node) {
+        var parent = node.parentNode;
+        return (parent.nodeType == 1) ? parent : null;
+    }
+
+    function getNodeIndex(node) {
+        var i = 0;
+        while( (node = node.previousSibling) ) {
+            i++;
+        }
+        return i;
+    }
+
+    function getNodeLength(node) {
+        var childNodes;
+        return isCharacterDataNode(node) ? node.length : ((childNodes = node.childNodes) ? childNodes.length : 0);
+    }
+
+    function getCommonAncestor(node1, node2) {
+        var ancestors = [], n;
+        for (n = node1; n; n = n.parentNode) {
+            ancestors.push(n);
+        }
+
+        for (n = node2; n; n = n.parentNode) {
+            if (arrayContains(ancestors, n)) {
+                return n;
+            }
+        }
+
+        return null;
+    }
+
+    function isAncestorOf(ancestor, descendant, selfIsAncestor) {
+        var n = selfIsAncestor ? descendant : descendant.parentNode;
+        while (n) {
+            if (n === ancestor) {
+                return true;
+            } else {
+                n = n.parentNode;
+            }
+        }
+        return false;
+    }
+
+    function getClosestAncestorIn(node, ancestor, selfIsAncestor) {
+        var p, n = selfIsAncestor ? node : node.parentNode;
+        while (n) {
+            p = n.parentNode;
+            if (p === ancestor) {
+                return n;
+            }
+            n = p;
+        }
+        return null;
+    }
+
+    function isCharacterDataNode(node) {
+        var t = node.nodeType;
+        return t == 3 || t == 4 || t == 8 ; // Text, CDataSection or Comment
+    }
+
+    function insertAfter(node, precedingNode) {
+        var nextNode = precedingNode.nextSibling, parent = precedingNode.parentNode;
+        if (nextNode) {
+            parent.insertBefore(node, nextNode);
+        } else {
+            parent.appendChild(node);
+        }
+        return node;
+    }
+
+    // Note that we cannot use splitText() because it is bugridden in IE 9.
+    function splitDataNode(node, index) {
+        var newNode = node.cloneNode(false);
+        newNode.deleteData(0, index);
+        node.deleteData(index, node.length - index);
+        insertAfter(newNode, node);
+        return newNode;
+    }
+
+    function getDocument(node) {
+        if (node.nodeType == 9) {
+            return node;
+        } else if (typeof node.ownerDocument != UNDEF) {
+            return node.ownerDocument;
+        } else if (typeof node.document != UNDEF) {
+            return node.document;
+        } else if (node.parentNode) {
+            return getDocument(node.parentNode);
+        } else {
+            throw new Error("getDocument: no document found for node");
+        }
+    }
+
+    function getWindow(node) {
+        var doc = getDocument(node);
+        if (typeof doc.defaultView != UNDEF) {
+            return doc.defaultView;
+        } else if (typeof doc.parentWindow != UNDEF) {
+            return doc.parentWindow;
+        } else {
+            throw new Error("Cannot get a window object for node");
+        }
+    }
+
+    function getIframeDocument(iframeEl) {
+        if (typeof iframeEl.contentDocument != UNDEF) {
+            return iframeEl.contentDocument;
+        } else if (typeof iframeEl.contentWindow != UNDEF) {
+            return iframeEl.contentWindow.document;
+        } else {
+            throw new Error("getIframeWindow: No Document object found for iframe element");
+        }
+    }
+
+    function getIframeWindow(iframeEl) {
+        if (typeof iframeEl.contentWindow != UNDEF) {
+            return iframeEl.contentWindow;
+        } else if (typeof iframeEl.contentDocument != UNDEF) {
+            return iframeEl.contentDocument.defaultView;
+        } else {
+            throw new Error("getIframeWindow: No Window object found for iframe element");
+        }
+    }
+
+    function getBody(doc) {
+        return util.isHostObject(doc, "body") ? doc.body : doc.getElementsByTagName("body")[0];
+    }
+
+    function getRootContainer(node) {
+        var parent;
+        while ( (parent = node.parentNode) ) {
+            node = parent;
+        }
+        return node;
+    }
+
+    function comparePoints(nodeA, offsetA, nodeB, offsetB) {
+        // See http://www.w3.org/TR/DOM-Level-2-Traversal-Range/ranges.html#Level-2-Range-Comparing
+        var nodeC, root, childA, childB, n;
+        if (nodeA == nodeB) {
+
+            // Case 1: nodes are the same
+            return offsetA === offsetB ? 0 : (offsetA < offsetB) ? -1 : 1;
+        } else if ( (nodeC = getClosestAncestorIn(nodeB, nodeA, true)) ) {
+
+            // Case 2: node C (container B or an ancestor) is a child node of A
+            return offsetA <= getNodeIndex(nodeC) ? -1 : 1;
+        } else if ( (nodeC = getClosestAncestorIn(nodeA, nodeB, true)) ) {
+
+            // Case 3: node C (container A or an ancestor) is a child node of B
+            return getNodeIndex(nodeC) < offsetB  ? -1 : 1;
+        } else {
+
+            // Case 4: containers are siblings or descendants of siblings
+            root = getCommonAncestor(nodeA, nodeB);
+            childA = (nodeA === root) ? root : getClosestAncestorIn(nodeA, root, true);
+            childB = (nodeB === root) ? root : getClosestAncestorIn(nodeB, root, true);
+
+            if (childA === childB) {
+                // This shouldn't be possible
+
+                throw new Error("comparePoints got to case 4 and childA and childB are the same!");
+            } else {
+                n = root.firstChild;
+                while (n) {
+                    if (n === childA) {
+                        return -1;
+                    } else if (n === childB) {
+                        return 1;
+                    }
+                    n = n.nextSibling;
+                }
+                throw new Error("Should not be here!");
+            }
+        }
+    }
+
+    function fragmentFromNodeChildren(node) {
+        var fragment = getDocument(node).createDocumentFragment(), child;
+        while ( (child = node.firstChild) ) {
+            fragment.appendChild(child);
+        }
+        return fragment;
+    }
+
+    function inspectNode(node) {
+        if (!node) {
+            return "[No node]";
+        }
+        if (isCharacterDataNode(node)) {
+            return '"' + node.data + '"';
+        } else if (node.nodeType == 1) {
+            var idAttr = node.id ? ' id="' + node.id + '"' : "";
+            return "<" + node.nodeName + idAttr + ">[" + node.childNodes.length + "]";
+        } else {
+            return node.nodeName;
+        }
+    }
+
+    /**
+     * @constructor
+     */
+    function NodeIterator(root) {
+        this.root = root;
+        this._next = root;
+    }
+
+    NodeIterator.prototype = {
+        _current: null,
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            var n = this._current = this._next;
+            var child, next;
+            if (this._current) {
+                child = n.firstChild;
+                if (child) {
+                    this._next = child;
+                } else {
+                    next = null;
+                    while ((n !== this.root) && !(next = n.nextSibling)) {
+                        n = n.parentNode;
+                    }
+                    this._next = next;
+                }
+            }
+            return this._current;
+        },
+
+        detach: function() {
+            this._current = this._next = this.root = null;
+        }
+    };
+
+    function createIterator(root) {
+        return new NodeIterator(root);
+    }
+
+    /**
+     * @constructor
+     */
+    function DomPosition(node, offset) {
+        this.node = node;
+        this.offset = offset;
+    }
+
+    DomPosition.prototype = {
+        equals: function(pos) {
+            return this.node === pos.node & this.offset == pos.offset;
+        },
+
+        inspect: function() {
+            return "[DomPosition(" + inspectNode(this.node) + ":" + this.offset + ")]";
+        }
+    };
+
+    /**
+     * @constructor
+     */
+    function DOMException(codeName) {
+        this.code = this[codeName];
+        this.codeName = codeName;
+        this.message = "DOMException: " + this.codeName;
+    }
+
+    DOMException.prototype = {
+        INDEX_SIZE_ERR: 1,
+        HIERARCHY_REQUEST_ERR: 3,
+        WRONG_DOCUMENT_ERR: 4,
+        NO_MODIFICATION_ALLOWED_ERR: 7,
+        NOT_FOUND_ERR: 8,
+        NOT_SUPPORTED_ERR: 9,
+        INVALID_STATE_ERR: 11
+    };
+
+    DOMException.prototype.toString = function() {
+        return this.message;
+    };
+
+    api.dom = {
+        arrayContains: arrayContains,
+        isHtmlNamespace: isHtmlNamespace,
+        parentElement: parentElement,
+        getNodeIndex: getNodeIndex,
+        getNodeLength: getNodeLength,
+        getCommonAncestor: getCommonAncestor,
+        isAncestorOf: isAncestorOf,
+        getClosestAncestorIn: getClosestAncestorIn,
+        isCharacterDataNode: isCharacterDataNode,
+        insertAfter: insertAfter,
+        splitDataNode: splitDataNode,
+        getDocument: getDocument,
+        getWindow: getWindow,
+        getIframeWindow: getIframeWindow,
+        getIframeDocument: getIframeDocument,
+        getBody: getBody,
+        getRootContainer: getRootContainer,
+        comparePoints: comparePoints,
+        inspectNode: inspectNode,
+        fragmentFromNodeChildren: fragmentFromNodeChildren,
+        createIterator: createIterator,
+        DomPosition: DomPosition
+    };
+
+    api.DOMException = DOMException;
+});rangy.createModule("DomRange", function(api, module) {
+    api.requireModules( ["DomUtil"] );
+
+
+    var dom = api.dom;
+    var DomPosition = dom.DomPosition;
+    var DOMException = api.DOMException;
+    
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Utility functions
+
+    function isNonTextPartiallySelected(node, range) {
+        return (node.nodeType != 3) &&
+               (dom.isAncestorOf(node, range.startContainer, true) || dom.isAncestorOf(node, range.endContainer, true));
+    }
+
+    function getRangeDocument(range) {
+        return dom.getDocument(range.startContainer);
+    }
+
+    function dispatchEvent(range, type, args) {
+        var listeners = range._listeners[type];
+        if (listeners) {
+            for (var i = 0, len = listeners.length; i < len; ++i) {
+                listeners[i].call(range, {target: range, args: args});
+            }
+        }
+    }
+
+    function getBoundaryBeforeNode(node) {
+        return new DomPosition(node.parentNode, dom.getNodeIndex(node));
+    }
+
+    function getBoundaryAfterNode(node) {
+        return new DomPosition(node.parentNode, dom.getNodeIndex(node) + 1);
+    }
+
+    function insertNodeAtPosition(node, n, o) {
+        var firstNodeInserted = node.nodeType == 11 ? node.firstChild : node;
+        if (dom.isCharacterDataNode(n)) {
+            if (o == n.length) {
+                dom.insertAfter(node, n);
+            } else {
+                n.parentNode.insertBefore(node, o == 0 ? n : dom.splitDataNode(n, o));
+            }
+        } else if (o >= n.childNodes.length) {
+            n.appendChild(node);
+        } else {
+            n.insertBefore(node, n.childNodes[o]);
+        }
+        return firstNodeInserted;
+    }
+
+    function cloneSubtree(iterator) {
+        var partiallySelected;
+        for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {
+            partiallySelected = iterator.isPartiallySelectedSubtree();
+
+            node = node.cloneNode(!partiallySelected);
+            if (partiallySelected) {
+                subIterator = iterator.getSubtreeIterator();
+                node.appendChild(cloneSubtree(subIterator));
+                subIterator.detach(true);
+            }
+
+            if (node.nodeType == 10) { // DocumentType
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+            frag.appendChild(node);
+        }
+        return frag;
+    }
+
+    function iterateSubtree(rangeIterator, func, iteratorState) {
+        var it, n;
+        iteratorState = iteratorState || { stop: false };
+        for (var node, subRangeIterator; node = rangeIterator.next(); ) {
+            //log.debug("iterateSubtree, partially selected: " + rangeIterator.isPartiallySelectedSubtree(), nodeToString(node));
+            if (rangeIterator.isPartiallySelectedSubtree()) {
+                // The node is partially selected by the Range, so we can use a new RangeIterator on the portion of the
+                // node selected by the Range.
+                if (func(node) === false) {
+                    iteratorState.stop = true;
+                    return;
+                } else {
+                    subRangeIterator = rangeIterator.getSubtreeIterator();
+                    iterateSubtree(subRangeIterator, func, iteratorState);
+                    subRangeIterator.detach(true);
+                    if (iteratorState.stop) {
+                        return;
+                    }
+                }
+            } else {
+                // The whole node is selected, so we can use efficient DOM iteration to iterate over the node and its
+                // descendant
+                it = dom.createIterator(node);
+                while ( (n = it.next()) ) {
+                    if (func(n) === false) {
+                        iteratorState.stop = true;
+                        return;
+                    }
+                }
+            }
+        }
+    }
+
+    function deleteSubtree(iterator) {
+        var subIterator;
+        while (iterator.next()) {
+            if (iterator.isPartiallySelectedSubtree()) {
+                subIterator = iterator.getSubtreeIterator();
+                deleteSubtree(subIterator);
+                subIterator.detach(true);
+            } else {
+                iterator.remove();
+            }
+        }
+    }
+
+    function extractSubtree(iterator) {
+
+        for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {
+
+
+            if (iterator.isPartiallySelectedSubtree()) {
+                node = node.cloneNode(false);
+                subIterator = iterator.getSubtreeIterator();
+                node.appendChild(extractSubtree(subIterator));
+                subIterator.detach(true);
+            } else {
+                iterator.remove();
+            }
+            if (node.nodeType == 10) { // DocumentType
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+            frag.appendChild(node);
+        }
+        return frag;
+    }
+
+    function getNodesInRange(range, nodeTypes, filter) {
+        //log.info("getNodesInRange, " + nodeTypes.join(","));
+        var filterNodeTypes = !!(nodeTypes && nodeTypes.length), regex;
+        var filterExists = !!filter;
+        if (filterNodeTypes) {
+            regex = new RegExp("^(" + nodeTypes.join("|") + ")$");
+        }
+
+        var nodes = [];
+        iterateSubtree(new RangeIterator(range, false), function(node) {
+            if ((!filterNodeTypes || regex.test(node.nodeType)) && (!filterExists || filter(node))) {
+                nodes.push(node);
+            }
+        });
+        return nodes;
+    }
+
+    function inspect(range) {
+        var name = (typeof range.getName == "undefined") ? "Range" : range.getName();
+        return "[" + name + "(" + dom.inspectNode(range.startContainer) + ":" + range.startOffset + ", " +
+                dom.inspectNode(range.endContainer) + ":" + range.endOffset + ")]";
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // RangeIterator code partially borrows from IERange by Tim Ryan (http://github.com/timcameronryan/IERange)
+
+    /**
+     * @constructor
+     */
+    function RangeIterator(range, clonePartiallySelectedTextNodes) {
+        this.range = range;
+        this.clonePartiallySelectedTextNodes = clonePartiallySelectedTextNodes;
+
+
+
+        if (!range.collapsed) {
+            this.sc = range.startContainer;
+            this.so = range.startOffset;
+            this.ec = range.endContainer;
+            this.eo = range.endOffset;
+            var root = range.commonAncestorContainer;
+
+            if (this.sc === this.ec && dom.isCharacterDataNode(this.sc)) {
+                this.isSingleCharacterDataNode = true;
+                this._first = this._last = this._next = this.sc;
+            } else {
+                this._first = this._next = (this.sc === root && !dom.isCharacterDataNode(this.sc)) ?
+                    this.sc.childNodes[this.so] : dom.getClosestAncestorIn(this.sc, root, true);
+                this._last = (this.ec === root && !dom.isCharacterDataNode(this.ec)) ?
+                    this.ec.childNodes[this.eo - 1] : dom.getClosestAncestorIn(this.ec, root, true);
+            }
+
+        }
+    }
+
+    RangeIterator.prototype = {
+        _current: null,
+        _next: null,
+        _first: null,
+        _last: null,
+        isSingleCharacterDataNode: false,
+
+        reset: function() {
+            this._current = null;
+            this._next = this._first;
+        },
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            // Move to next node
+            var current = this._current = this._next;
+            if (current) {
+                this._next = (current !== this._last) ? current.nextSibling : null;
+
+                // Check for partially selected text nodes
+                if (dom.isCharacterDataNode(current) && this.clonePartiallySelectedTextNodes) {
+                    if (current === this.ec) {
+
+                        (current = current.cloneNode(true)).deleteData(this.eo, current.length - this.eo);
+                    }
+                    if (this._current === this.sc) {
+
+                        (current = current.cloneNode(true)).deleteData(0, this.so);
+                    }
+                }
+            }
+
+            return current;
+        },
+
+        remove: function() {
+            var current = this._current, start, end;
+
+            if (dom.isCharacterDataNode(current) && (current === this.sc || current === this.ec)) {
+                start = (current === this.sc) ? this.so : 0;
+                end = (current === this.ec) ? this.eo : current.length;
+                if (start != end) {
+                    current.deleteData(start, end - start);
+                }
+            } else {
+                if (current.parentNode) {
+                    current.parentNode.removeChild(current);
+                } else {
+
+                }
+            }
+        },
+
+        // Checks if the current node is partially selected
+        isPartiallySelectedSubtree: function() {
+            var current = this._current;
+            return isNonTextPartiallySelected(current, this.range);
+        },
+
+        getSubtreeIterator: function() {
+            var subRange;
+            if (this.isSingleCharacterDataNode) {
+                subRange = this.range.cloneRange();
+                subRange.collapse();
+            } else {
+                subRange = new Range(getRangeDocument(this.range));
+                var current = this._current;
+                var startContainer = current, startOffset = 0, endContainer = current, endOffset = dom.getNodeLength(current);
+
+                if (dom.isAncestorOf(current, this.sc, true)) {
+                    startContainer = this.sc;
+                    startOffset = this.so;
+                }
+                if (dom.isAncestorOf(current, this.ec, true)) {
+                    endContainer = this.ec;
+                    endOffset = this.eo;
+                }
+
+                updateBoundaries(subRange, startContainer, startOffset, endContainer, endOffset);
+            }
+            return new RangeIterator(subRange, this.clonePartiallySelectedTextNodes);
+        },
+
+        detach: function(detachRange) {
+            if (detachRange) {
+                this.range.detach();
+            }
+            this.range = this._current = this._next = this._first = this._last = this.sc = this.so = this.ec = this.eo = null;
+        }
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Exceptions
+
+    /**
+     * @constructor
+     */
+    function RangeException(codeName) {
+        this.code = this[codeName];
+        this.codeName = codeName;
+        this.message = "RangeException: " + this.codeName;
+    }
+
+    RangeException.prototype = {
+        BAD_BOUNDARYPOINTS_ERR: 1,
+        INVALID_NODE_TYPE_ERR: 2
+    };
+
+    RangeException.prototype.toString = function() {
+        return this.message;
+    };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    /**
+     * Currently iterates through all nodes in the range on creation until I think of a decent way to do it
+     * TODO: Look into making this a proper iterator, not requiring preloading everything first
+     * @constructor
+     */
+    function RangeNodeIterator(range, nodeTypes, filter) {
+        this.nodes = getNodesInRange(range, nodeTypes, filter);
+        this._next = this.nodes[0];
+        this._position = 0;
+    }
+
+    RangeNodeIterator.prototype = {
+        _current: null,
+
+        hasNext: function() {
+            return !!this._next;
+        },
+
+        next: function() {
+            this._current = this._next;
+            this._next = this.nodes[ ++this._position ];
+            return this._current;
+        },
+
+        detach: function() {
+            this._current = this._next = this.nodes = null;
+        }
+    };
+
+    var beforeAfterNodeTypes = [1, 3, 4, 5, 7, 8, 10];
+    var rootContainerNodeTypes = [2, 9, 11];
+    var readonlyNodeTypes = [5, 6, 10, 12];
+    var insertableNodeTypes = [1, 3, 4, 5, 7, 8, 10, 11];
+    var surroundNodeTypes = [1, 3, 4, 5, 7, 8];
+
+    function createAncestorFinder(nodeTypes) {
+        return function(node, selfIsAncestor) {
+            var t, n = selfIsAncestor ? node : node.parentNode;
+            while (n) {
+                t = n.nodeType;
+                if (dom.arrayContains(nodeTypes, t)) {
+                    return n;
+                }
+                n = n.parentNode;
+            }
+            return null;
+        };
+    }
+
+    var getRootContainer = dom.getRootContainer;
+    var getDocumentOrFragmentContainer = createAncestorFinder( [9, 11] );
+    var getReadonlyAncestor = createAncestorFinder(readonlyNodeTypes);
+    var getDocTypeNotationEntityAncestor = createAncestorFinder( [6, 10, 12] );
+
+    function assertNoDocTypeNotationEntityAncestor(node, allowSelf) {
+        if (getDocTypeNotationEntityAncestor(node, allowSelf)) {
+            throw new RangeException("INVALID_NODE_TYPE_ERR");
+        }
+    }
+
+    function assertNotDetached(range) {
+        if (!range.startContainer) {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    }
+
+    function assertValidNodeType(node, invalidTypes) {
+        if (!dom.arrayContains(invalidTypes, node.nodeType)) {
+            throw new RangeException("INVALID_NODE_TYPE_ERR");
+        }
+    }
+
+    function assertValidOffset(node, offset) {
+        if (offset < 0 || offset > (dom.isCharacterDataNode(node) ? node.length : node.childNodes.length)) {
+            throw new DOMException("INDEX_SIZE_ERR");
+        }
+    }
+
+    function assertSameDocumentOrFragment(node1, node2) {
+        if (getDocumentOrFragmentContainer(node1, true) !== getDocumentOrFragmentContainer(node2, true)) {
+            throw new DOMException("WRONG_DOCUMENT_ERR");
+        }
+    }
+
+    function assertNodeNotReadOnly(node) {
+        if (getReadonlyAncestor(node, true)) {
+            throw new DOMException("NO_MODIFICATION_ALLOWED_ERR");
+        }
+    }
+
+    function assertNode(node, codeName) {
+        if (!node) {
+            throw new DOMException(codeName);
+        }
+    }
+
+    function isOrphan(node) {
+        return !dom.arrayContains(rootContainerNodeTypes, node.nodeType) && !getDocumentOrFragmentContainer(node, true);
+    }
+
+    function isValidOffset(node, offset) {
+        return offset <= (dom.isCharacterDataNode(node) ? node.length : node.childNodes.length);
+    }
+
+    function isRangeValid(range) {
+        return (!!range.startContainer && !!range.endContainer
+                && !isOrphan(range.startContainer)
+                && !isOrphan(range.endContainer)
+                && isValidOffset(range.startContainer, range.startOffset)
+                && isValidOffset(range.endContainer, range.endOffset));
+    }
+
+    function assertRangeValid(range) {
+        assertNotDetached(range);
+        if (!isRangeValid(range)) {
+            throw new Error("Range error: Range is no longer valid after DOM mutation (" + range.inspect() + ")");
+        }
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Test the browser's innerHTML support to decide how to implement createContextualFragment
+    var styleEl = document.createElement("style");
+    var htmlParsingConforms = false;
+    try {
+        styleEl.innerHTML = "<b>x</b>";
+        htmlParsingConforms = (styleEl.firstChild.nodeType == 3); // Opera incorrectly creates an element node
+    } catch (e) {
+        // IE 6 and 7 throw
+    }
+
+    api.features.htmlParsingConforms = htmlParsingConforms;
+
+    var createContextualFragment = htmlParsingConforms ?
+
+        // Implementation as per HTML parsing spec, trusting in the browser's implementation of innerHTML. See
+        // discussion and base code for this implementation at issue 67.
+        // Spec: http://html5.org/specs/dom-parsing.html#extensions-to-the-range-interface
+        // Thanks to Aleks Williams.
+        function(fragmentStr) {
+            // "Let node the context object's start's node."
+            var node = this.startContainer;
+            var doc = dom.getDocument(node);
+
+            // "If the context object's start's node is null, raise an INVALID_STATE_ERR
+            // exception and abort these steps."
+            if (!node) {
+                throw new DOMException("INVALID_STATE_ERR");
+            }
+
+            // "Let element be as follows, depending on node's interface:"
+            // Document, Document Fragment: null
+            var el = null;
+
+            // "Element: node"
+            if (node.nodeType == 1) {
+                el = node;
+
+            // "Text, Comment: node's parentElement"
+            } else if (dom.isCharacterDataNode(node)) {
+                el = dom.parentElement(node);
+            }
+
+            // "If either element is null or element's ownerDocument is an HTML document
+            // and element's local name is "html" and element's namespace is the HTML
+            // namespace"
+            if (el === null || (
+                el.nodeName == "HTML"
+                && dom.isHtmlNamespace(dom.getDocument(el).documentElement)
+                && dom.isHtmlNamespace(el)
+            )) {
+
+            // "let element be a new Element with "body" as its local name and the HTML
+            // namespace as its namespace.""
+                el = doc.createElement("body");
+            } else {
+                el = el.cloneNode(false);
+            }
+
+            // "If the node's document is an HTML document: Invoke the HTML fragment parsing algorithm."
+            // "If the node's document is an XML document: Invoke the XML fragment parsing algorithm."
+            // "In either case, the algorithm must be invoked with fragment as the input
+            // and element as the context element."
+            el.innerHTML = fragmentStr;
+
+            // "If this raises an exception, then abort these steps. Otherwise, let new
+            // children be the nodes returned."
+
+            // "Let fragment be a new DocumentFragment."
+            // "Append all new children to fragment."
+            // "Return fragment."
+            return dom.fragmentFromNodeChildren(el);
+        } :
+
+        // In this case, innerHTML cannot be trusted, so fall back to a simpler, non-conformant implementation that
+        // previous versions of Rangy used (with the exception of using a body element rather than a div)
+        function(fragmentStr) {
+            assertNotDetached(this);
+            var doc = getRangeDocument(this);
+            var el = doc.createElement("body");
+            el.innerHTML = fragmentStr;
+
+            return dom.fragmentFromNodeChildren(el);
+        };
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    var rangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
+        "commonAncestorContainer"];
+
+    var s2s = 0, s2e = 1, e2e = 2, e2s = 3;
+    var n_b = 0, n_a = 1, n_b_a = 2, n_i = 3;
+
+    function RangePrototype() {}
+
+    RangePrototype.prototype = {
+        attachListener: function(type, listener) {
+            this._listeners[type].push(listener);
+        },
+
+        compareBoundaryPoints: function(how, range) {
+            assertRangeValid(this);
+            assertSameDocumentOrFragment(this.startContainer, range.startContainer);
+
+            var nodeA, offsetA, nodeB, offsetB;
+            var prefixA = (how == e2s || how == s2s) ? "start" : "end";
+            var prefixB = (how == s2e || how == s2s) ? "start" : "end";
+            nodeA = this[prefixA + "Container"];
+            offsetA = this[prefixA + "Offset"];
+            nodeB = range[prefixB + "Container"];
+            offsetB = range[prefixB + "Offset"];
+            return dom.comparePoints(nodeA, offsetA, nodeB, offsetB);
+        },
+
+        insertNode: function(node) {
+            assertRangeValid(this);
+            assertValidNodeType(node, insertableNodeTypes);
+            assertNodeNotReadOnly(this.startContainer);
+
+            if (dom.isAncestorOf(node, this.startContainer, true)) {
+                throw new DOMException("HIERARCHY_REQUEST_ERR");
+            }
+
+            // No check for whether the container of the start of the Range is of a type that does not allow
+            // children of the type of node: the browser's DOM implementation should do this for us when we attempt
+            // to add the node
+
+            var firstNodeInserted = insertNodeAtPosition(node, this.startContainer, this.startOffset);
+            this.setStartBefore(firstNodeInserted);
+        },
+
+        cloneContents: function() {
+            assertRangeValid(this);
+
+            var clone, frag;
+            if (this.collapsed) {
+                return getRangeDocument(this).createDocumentFragment();
+            } else {
+                if (this.startContainer === this.endContainer && dom.isCharacterDataNode(this.startContainer)) {
+                    clone = this.startContainer.cloneNode(true);
+                    clone.data = clone.data.slice(this.startOffset, this.endOffset);
+                    frag = getRangeDocument(this).createDocumentFragment();
+                    frag.appendChild(clone);
+                    return frag;
+                } else {
+                    var iterator = new RangeIterator(this, true);
+                    clone = cloneSubtree(iterator);
+                    iterator.detach();
+                }
+                return clone;
+            }
+        },
+
+        canSurroundContents: function() {
+            assertRangeValid(this);
+            assertNodeNotReadOnly(this.startContainer);
+            assertNodeNotReadOnly(this.endContainer);
+
+            // Check if the contents can be surrounded. Specifically, this means whether the range partially selects
+            // no non-text nodes.
+            var iterator = new RangeIterator(this, true);
+            var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
+                    (iterator._last && isNonTextPartiallySelected(iterator._last, this)));
+            iterator.detach();
+            return !boundariesInvalid;
+        },
+
+        surroundContents: function(node) {
+            assertValidNodeType(node, surroundNodeTypes);
+
+            if (!this.canSurroundContents()) {
+                throw new RangeException("BAD_BOUNDARYPOINTS_ERR");
+            }
+
+            // Extract the contents
+            var content = this.extractContents();
+
+            // Clear the children of the node
+            if (node.hasChildNodes()) {
+                while (node.lastChild) {
+                    node.removeChild(node.lastChild);
+                }
+            }
+
+            // Insert the new node and add the extracted contents
+            insertNodeAtPosition(node, this.startContainer, this.startOffset);
+            node.appendChild(content);
+
+            this.selectNode(node);
+        },
+
+        cloneRange: function() {
+            assertRangeValid(this);
+            var range = new Range(getRangeDocument(this));
+            var i = rangeProperties.length, prop;
+            while (i--) {
+                prop = rangeProperties[i];
+                range[prop] = this[prop];
+            }
+            return range;
+        },
+
+        toString: function() {
+            assertRangeValid(this);
+            var sc = this.startContainer;
+            if (sc === this.endContainer && dom.isCharacterDataNode(sc)) {
+                return (sc.nodeType == 3 || sc.nodeType == 4) ? sc.data.slice(this.startOffset, this.endOffset) : "";
+            } else {
+                var textBits = [], iterator = new RangeIterator(this, true);
+
+                iterateSubtree(iterator, function(node) {
+                    // Accept only text or CDATA nodes, not comments
+
+                    if (node.nodeType == 3 || node.nodeType == 4) {
+                        textBits.push(node.data);
+                    }
+                });
+                iterator.detach();
+                return textBits.join("");
+            }
+        },
+
+        // The methods below are all non-standard. The following batch were introduced by Mozilla but have since
+        // been removed from Mozilla.
+
+        compareNode: function(node) {
+            assertRangeValid(this);
+
+            var parent = node.parentNode;
+            var nodeIndex = dom.getNodeIndex(node);
+
+            if (!parent) {
+                throw new DOMException("NOT_FOUND_ERR");
+            }
+
+            var startComparison = this.comparePoint(parent, nodeIndex),
+                endComparison = this.comparePoint(parent, nodeIndex + 1);
+
+            if (startComparison < 0) { // Node starts before
+                return (endComparison > 0) ? n_b_a : n_b;
+            } else {
+                return (endComparison > 0) ? n_a : n_i;
+            }
+        },
+
+        comparePoint: function(node, offset) {
+            assertRangeValid(this);
+            assertNode(node, "HIERARCHY_REQUEST_ERR");
+            assertSameDocumentOrFragment(node, this.startContainer);
+
+            if (dom.comparePoints(node, offset, this.startContainer, this.startOffset) < 0) {
+                return -1;
+            } else if (dom.comparePoints(node, offset, this.endContainer, this.endOffset) > 0) {
+                return 1;
+            }
+            return 0;
+        },
+
+        createContextualFragment: createContextualFragment,
+
+        toHtml: function() {
+            assertRangeValid(this);
+            var container = getRangeDocument(this).createElement("div");
+            container.appendChild(this.cloneContents());
+            return container.innerHTML;
+        },
+
+        // touchingIsIntersecting determines whether this method considers a node that borders a range intersects
+        // with it (as in WebKit) or not (as in Gecko pre-1.9, and the default)
+        intersectsNode: function(node, touchingIsIntersecting) {
+            assertRangeValid(this);
+            assertNode(node, "NOT_FOUND_ERR");
+            if (dom.getDocument(node) !== getRangeDocument(this)) {
+                return false;
+            }
+
+            var parent = node.parentNode, offset = dom.getNodeIndex(node);
+            assertNode(parent, "NOT_FOUND_ERR");
+
+            var startComparison = dom.comparePoints(parent, offset, this.endContainer, this.endOffset),
+                endComparison = dom.comparePoints(parent, offset + 1, this.startContainer, this.startOffset);
+
+            return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
+        },
+
+
+        isPointInRange: function(node, offset) {
+            assertRangeValid(this);
+            assertNode(node, "HIERARCHY_REQUEST_ERR");
+            assertSameDocumentOrFragment(node, this.startContainer);
+
+            return (dom.comparePoints(node, offset, this.startContainer, this.startOffset) >= 0) &&
+                   (dom.comparePoints(node, offset, this.endContainer, this.endOffset) <= 0);
+        },
+
+        // The methods below are non-standard and invented by me.
+
+        // Sharing a boundary start-to-end or end-to-start does not count as intersection.
+        intersectsRange: function(range, touchingIsIntersecting) {
+            assertRangeValid(this);
+
+            if (getRangeDocument(range) != getRangeDocument(this)) {
+                throw new DOMException("WRONG_DOCUMENT_ERR");
+            }
+
+            var startComparison = dom.comparePoints(this.startContainer, this.startOffset, range.endContainer, range.endOffset),
+                endComparison = dom.comparePoints(this.endContainer, this.endOffset, range.startContainer, range.startOffset);
+
+            return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
+        },
+
+        intersection: function(range) {
+            if (this.intersectsRange(range)) {
+                var startComparison = dom.comparePoints(this.startContainer, this.startOffset, range.startContainer, range.startOffset),
+                    endComparison = dom.comparePoints(this.endContainer, this.endOffset, range.endContainer, range.endOffset);
+
+                var intersectionRange = this.cloneRange();
+
+                if (startComparison == -1) {
+                    intersectionRange.setStart(range.startContainer, range.startOffset);
+                }
+                if (endComparison == 1) {
+                    intersectionRange.setEnd(range.endContainer, range.endOffset);
+                }
+                return intersectionRange;
+            }
+            return null;
+        },
+
+        union: function(range) {
+            if (this.intersectsRange(range, true)) {
+                var unionRange = this.cloneRange();
+                if (dom.comparePoints(range.startContainer, range.startOffset, this.startContainer, this.startOffset) == -1) {
+                    unionRange.setStart(range.startContainer, range.startOffset);
+                }
+                if (dom.comparePoints(range.endContainer, range.endOffset, this.endContainer, this.endOffset) == 1) {
+                    unionRange.setEnd(range.endContainer, range.endOffset);
+                }
+                return unionRange;
+            } else {
+                throw new RangeException("Ranges do not intersect");
+            }
+        },
+
+        containsNode: function(node, allowPartial) {
+            if (allowPartial) {
+                return this.intersectsNode(node, false);
+            } else {
+                return this.compareNode(node) == n_i;
+            }
+        },
+
+        containsNodeContents: function(node) {
+            return this.comparePoint(node, 0) >= 0 && this.comparePoint(node, dom.getNodeLength(node)) <= 0;
+        },
+
+        containsRange: function(range) {
+            return this.intersection(range).equals(range);
+        },
+
+        containsNodeText: function(node) {
+            var nodeRange = this.cloneRange();
+            nodeRange.selectNode(node);
+            var textNodes = nodeRange.getNodes([3]);
+            if (textNodes.length > 0) {
+                nodeRange.setStart(textNodes[0], 0);
+                var lastTextNode = textNodes.pop();
+                nodeRange.setEnd(lastTextNode, lastTextNode.length);
+                var contains = this.containsRange(nodeRange);
+                nodeRange.detach();
+                return contains;
+            } else {
+                return this.containsNodeContents(node);
+            }
+        },
+
+        createNodeIterator: function(nodeTypes, filter) {
+            assertRangeValid(this);
+            return new RangeNodeIterator(this, nodeTypes, filter);
+        },
+
+        getNodes: function(nodeTypes, filter) {
+            assertRangeValid(this);
+            return getNodesInRange(this, nodeTypes, filter);
+        },
+
+        getDocument: function() {
+            return getRangeDocument(this);
+        },
+
+        collapseBefore: function(node) {
+            assertNotDetached(this);
+
+            this.setEndBefore(node);
+            this.collapse(false);
+        },
+
+        collapseAfter: function(node) {
+            assertNotDetached(this);
+
+            this.setStartAfter(node);
+            this.collapse(true);
+        },
+
+        getName: function() {
+            return "DomRange";
+        },
+
+        equals: function(range) {
+            return Range.rangesEqual(this, range);
+        },
+
+        isValid: function() {
+            return isRangeValid(this);
+        },
+
+        inspect: function() {
+            return inspect(this);
+        }
+    };
+
+    function copyComparisonConstantsToObject(obj) {
+        obj.START_TO_START = s2s;
+        obj.START_TO_END = s2e;
+        obj.END_TO_END = e2e;
+        obj.END_TO_START = e2s;
+
+        obj.NODE_BEFORE = n_b;
+        obj.NODE_AFTER = n_a;
+        obj.NODE_BEFORE_AND_AFTER = n_b_a;
+        obj.NODE_INSIDE = n_i;
+    }
+
+    function copyComparisonConstants(constructor) {
+        copyComparisonConstantsToObject(constructor);
+        copyComparisonConstantsToObject(constructor.prototype);
+    }
+
+    function createRangeContentRemover(remover, boundaryUpdater) {
+        return function() {
+            assertRangeValid(this);
+
+            var sc = this.startContainer, so = this.startOffset, root = this.commonAncestorContainer;
+
+            var iterator = new RangeIterator(this, true);
+
+            // Work out where to position the range after content removal
+            var node, boundary;
+            if (sc !== root) {
+                node = dom.getClosestAncestorIn(sc, root, true);
+                boundary = getBoundaryAfterNode(node);
+                sc = boundary.node;
+                so = boundary.offset;
+            }
+
+            // Check none of the range is read-only
+            iterateSubtree(iterator, assertNodeNotReadOnly);
+
+            iterator.reset();
+
+            // Remove the content
+            var returnValue = remover(iterator);
+            iterator.detach();
+
+            // Move to the new position
+            boundaryUpdater(this, sc, so, sc, so);
+
+            return returnValue;
+        };
+    }
+
+    function createPrototypeRange(constructor, boundaryUpdater, detacher) {
+        function createBeforeAfterNodeSetter(isBefore, isStart) {
+            return function(node) {
+                assertNotDetached(this);
+                assertValidNodeType(node, beforeAfterNodeTypes);
+                assertValidNodeType(getRootContainer(node), rootContainerNodeTypes);
+
+                var boundary = (isBefore ? getBoundaryBeforeNode : getBoundaryAfterNode)(node);
+                (isStart ? setRangeStart : setRangeEnd)(this, boundary.node, boundary.offset);
+            };
+        }
+
+        function setRangeStart(range, node, offset) {
+            var ec = range.endContainer, eo = range.endOffset;
+            if (node !== range.startContainer || offset !== range.startOffset) {
+                // Check the root containers of the range and the new boundary, and also check whether the new boundary
+                // is after the current end. In either case, collapse the range to the new position
+                if (getRootContainer(node) != getRootContainer(ec) || dom.comparePoints(node, offset, ec, eo) == 1) {
+                    ec = node;
+                    eo = offset;
+                }
+                boundaryUpdater(range, node, offset, ec, eo);
+            }
+        }
+
+        function setRangeEnd(range, node, offset) {
+            var sc = range.startContainer, so = range.startOffset;
+            if (node !== range.endContainer || offset !== range.endOffset) {
+                // Check the root containers of the range and the new boundary, and also check whether the new boundary
+                // is after the current end. In either case, collapse the range to the new position
+                if (getRootContainer(node) != getRootContainer(sc) || dom.comparePoints(node, offset, sc, so) == -1) {
+                    sc = node;
+                    so = offset;
+                }
+                boundaryUpdater(range, sc, so, node, offset);
+            }
+        }
+
+        function setRangeStartAndEnd(range, node, offset) {
+            if (node !== range.startContainer || offset !== range.startOffset || node !== range.endContainer || offset !== range.endOffset) {
+                boundaryUpdater(range, node, offset, node, offset);
+            }
+        }
+
+        constructor.prototype = new RangePrototype();
+
+        api.util.extend(constructor.prototype, {
+            setStart: function(node, offset) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeStart(this, node, offset);
+            },
+
+            setEnd: function(node, offset) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeEnd(this, node, offset);
+            },
+
+            setStartBefore: createBeforeAfterNodeSetter(true, true),
+            setStartAfter: createBeforeAfterNodeSetter(false, true),
+            setEndBefore: createBeforeAfterNodeSetter(true, false),
+            setEndAfter: createBeforeAfterNodeSetter(false, false),
+
+            collapse: function(isStart) {
+                assertRangeValid(this);
+                if (isStart) {
+                    boundaryUpdater(this, this.startContainer, this.startOffset, this.startContainer, this.startOffset);
+                } else {
+                    boundaryUpdater(this, this.endContainer, this.endOffset, this.endContainer, this.endOffset);
+                }
+            },
+
+            selectNodeContents: function(node) {
+                // This doesn't seem well specified: the spec talks only about selecting the node's contents, which
+                // could be taken to mean only its children. However, browsers implement this the same as selectNode for
+                // text nodes, so I shall do likewise
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, true);
+
+                boundaryUpdater(this, node, 0, node, dom.getNodeLength(node));
+            },
+
+            selectNode: function(node) {
+                assertNotDetached(this);
+                assertNoDocTypeNotationEntityAncestor(node, false);
+                assertValidNodeType(node, beforeAfterNodeTypes);
+
+                var start = getBoundaryBeforeNode(node), end = getBoundaryAfterNode(node);
+                boundaryUpdater(this, start.node, start.offset, end.node, end.offset);
+            },
+
+            extractContents: createRangeContentRemover(extractSubtree, boundaryUpdater),
+
+            deleteContents: createRangeContentRemover(deleteSubtree, boundaryUpdater),
+
+            canSurroundContents: function() {
+                assertRangeValid(this);
+                assertNodeNotReadOnly(this.startContainer);
+                assertNodeNotReadOnly(this.endContainer);
+
+                // Check if the contents can be surrounded. Specifically, this means whether the range partially selects
+                // no non-text nodes.
+                var iterator = new RangeIterator(this, true);
+                var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
+                        (iterator._last && isNonTextPartiallySelected(iterator._last, this)));
+                iterator.detach();
+                return !boundariesInvalid;
+            },
+
+            detach: function() {
+                detacher(this);
+            },
+
+            splitBoundaries: function() {
+                assertRangeValid(this);
+
+
+                var sc = this.startContainer, so = this.startOffset, ec = this.endContainer, eo = this.endOffset;
+                var startEndSame = (sc === ec);
+
+                if (dom.isCharacterDataNode(ec) && eo > 0 && eo < ec.length) {
+                    dom.splitDataNode(ec, eo);
+
+                }
+
+                if (dom.isCharacterDataNode(sc) && so > 0 && so < sc.length) {
+
+                    sc = dom.splitDataNode(sc, so);
+                    if (startEndSame) {
+                        eo -= so;
+                        ec = sc;
+                    } else if (ec == sc.parentNode && eo >= dom.getNodeIndex(sc)) {
+                        eo++;
+                    }
+                    so = 0;
+
+                }
+                boundaryUpdater(this, sc, so, ec, eo);
+            },
+
+            normalizeBoundaries: function() {
+                assertRangeValid(this);
+
+                var sc = this.startContainer, so = this.startOffset, ec = this.endContainer, eo = this.endOffset;
+
+                var mergeForward = function(node) {
+                    var sibling = node.nextSibling;
+                    if (sibling && sibling.nodeType == node.nodeType) {
+                        ec = node;
+                        eo = node.length;
+                        node.appendData(sibling.data);
+                        sibling.parentNode.removeChild(sibling);
+                    }
+                };
+
+                var mergeBackward = function(node) {
+                    var sibling = node.previousSibling;
+                    if (sibling && sibling.nodeType == node.nodeType) {
+                        sc = node;
+                        var nodeLength = node.length;
+                        so = sibling.length;
+                        node.insertData(0, sibling.data);
+                        sibling.parentNode.removeChild(sibling);
+                        if (sc == ec) {
+                            eo += so;
+                            ec = sc;
+                        } else if (ec == node.parentNode) {
+                            var nodeIndex = dom.getNodeIndex(node);
+                            if (eo == nodeIndex) {
+                                ec = node;
+                                eo = nodeLength;
+                            } else if (eo > nodeIndex) {
+                                eo--;
+                            }
+                        }
+                    }
+                };
+
+                var normalizeStart = true;
+
+                if (dom.isCharacterDataNode(ec)) {
+                    if (ec.length == eo) {
+                        mergeForward(ec);
+                    }
+                } else {
+                    if (eo > 0) {
+                        var endNode = ec.childNodes[eo - 1];
+                        if (endNode && dom.isCharacterDataNode(endNode)) {
+                            mergeForward(endNode);
+                        }
+                    }
+                    normalizeStart = !this.collapsed;
+                }
+
+                if (normalizeStart) {
+                    if (dom.isCharacterDataNode(sc)) {
+                        if (so == 0) {
+                            mergeBackward(sc);
+                        }
+                    } else {
+                        if (so < sc.childNodes.length) {
+                            var startNode = sc.childNodes[so];
+                            if (startNode && dom.isCharacterDataNode(startNode)) {
+                                mergeBackward(startNode);
+                            }
+                        }
+                    }
+                } else {
+                    sc = ec;
+                    so = eo;
+                }
+
+                boundaryUpdater(this, sc, so, ec, eo);
+            },
+
+            collapseToPoint: function(node, offset) {
+                assertNotDetached(this);
+
+                assertNoDocTypeNotationEntityAncestor(node, true);
+                assertValidOffset(node, offset);
+
+                setRangeStartAndEnd(this, node, offset);
+            }
+        });
+
+        copyComparisonConstants(constructor);
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    // Updates commonAncestorContainer and collapsed after boundary change
+    function updateCollapsedAndCommonAncestor(range) {
+        range.collapsed = (range.startContainer === range.endContainer && range.startOffset === range.endOffset);
+        range.commonAncestorContainer = range.collapsed ?
+            range.startContainer : dom.getCommonAncestor(range.startContainer, range.endContainer);
+    }
+
+    function updateBoundaries(range, startContainer, startOffset, endContainer, endOffset) {
+        var startMoved = (range.startContainer !== startContainer || range.startOffset !== startOffset);
+        var endMoved = (range.endContainer !== endContainer || range.endOffset !== endOffset);
+
+        range.startContainer = startContainer;
+        range.startOffset = startOffset;
+        range.endContainer = endContainer;
+        range.endOffset = endOffset;
+
+        updateCollapsedAndCommonAncestor(range);
+        dispatchEvent(range, "boundarychange", {startMoved: startMoved, endMoved: endMoved});
+    }
+
+    function detach(range) {
+        assertNotDetached(range);
+        range.startContainer = range.startOffset = range.endContainer = range.endOffset = null;
+        range.collapsed = range.commonAncestorContainer = null;
+        dispatchEvent(range, "detach", null);
+        range._listeners = null;
+    }
+
+    /**
+     * @constructor
+     */
+    function Range(doc) {
+        this.startContainer = doc;
+        this.startOffset = 0;
+        this.endContainer = doc;
+        this.endOffset = 0;
+        this._listeners = {
+            boundarychange: [],
+            detach: []
+        };
+        updateCollapsedAndCommonAncestor(this);
+    }
+
+    createPrototypeRange(Range, updateBoundaries, detach);
+
+    api.rangePrototype = RangePrototype.prototype;
+
+    Range.rangeProperties = rangeProperties;
+    Range.RangeIterator = RangeIterator;
+    Range.copyComparisonConstants = copyComparisonConstants;
+    Range.createPrototypeRange = createPrototypeRange;
+    Range.inspect = inspect;
+    Range.getRangeDocument = getRangeDocument;
+    Range.rangesEqual = function(r1, r2) {
+        return r1.startContainer === r2.startContainer &&
+               r1.startOffset === r2.startOffset &&
+               r1.endContainer === r2.endContainer &&
+               r1.endOffset === r2.endOffset;
+    };
+
+    api.DomRange = Range;
+    api.RangeException = RangeException;
+});rangy.createModule("WrappedRange", function(api, module) {
+    api.requireModules( ["DomUtil", "DomRange"] );
+
+    /**
+     * @constructor
+     */
+    var WrappedRange;
+    var dom = api.dom;
+    var DomPosition = dom.DomPosition;
+    var DomRange = api.DomRange;
+
+
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    /*
+    This is a workaround for a bug where IE returns the wrong container element from the TextRange's parentElement()
+    method. For example, in the following (where pipes denote the selection boundaries):
+
+    <ul id="ul"><li id="a">| a </li><li id="b"> b |</li></ul>
+
+    var range = document.selection.createRange();
+    alert(range.parentElement().id); // Should alert "ul" but alerts "b"
+
+    This method returns the common ancestor node of the following:
+    - the parentElement() of the textRange
+    - the parentElement() of the textRange after calling collapse(true)
+    - the parentElement() of the textRange after calling collapse(false)
+     */
+    function getTextRangeContainerElement(textRange) {
+        var parentEl = textRange.parentElement();
+
+        var range = textRange.duplicate();
+        range.collapse(true);
+        var startEl = range.parentElement();
+        range = textRange.duplicate();
+        range.collapse(false);
+        var endEl = range.parentElement();
+        var startEndContainer = (startEl == endEl) ? startEl : dom.getCommonAncestor(startEl, endEl);
+
+        return startEndContainer == parentEl ? startEndContainer : dom.getCommonAncestor(parentEl, startEndContainer);
+    }
+
+    function textRangeIsCollapsed(textRange) {
+        return textRange.compareEndPoints("StartToEnd", textRange) == 0;
+    }
+
+    // Gets the boundary of a TextRange expressed as a node and an offset within that node. This function started out as
+    // an improved version of code found in Tim Cameron Ryan's IERange (http://code.google.com/p/ierange/) but has
+    // grown, fixing problems with line breaks in preformatted text, adding workaround for IE TextRange bugs, handling
+    // for inputs and images, plus optimizations.
+    function getTextRangeBoundaryPosition(textRange, wholeRangeContainerElement, isStart, isCollapsed) {
+        var workingRange = textRange.duplicate();
+
+        workingRange.collapse(isStart);
+        var containerElement = workingRange.parentElement();
+
+        // Sometimes collapsing a TextRange that's at the start of a text node can move it into the previous node, so
+        // check for that
+        // TODO: Find out when. Workaround for wholeRangeContainerElement may break this
+        if (!dom.isAncestorOf(wholeRangeContainerElement, containerElement, true)) {
+            containerElement = wholeRangeContainerElement;
+
+        }
+
+
+
+        // Deal with nodes that cannot "contain rich HTML markup". In practice, this means form inputs, images and
+        // similar. See http://msdn.microsoft.com/en-us/library/aa703950%28VS.85%29.aspx
+        if (!containerElement.canHaveHTML) {
+            return new DomPosition(containerElement.parentNode, dom.getNodeIndex(containerElement));
+        }
+
+        var workingNode = dom.getDocument(containerElement).createElement("span");
+        var comparison, workingComparisonType = isStart ? "StartToStart" : "StartToEnd";
+        var previousNode, nextNode, boundaryPosition, boundaryNode;
+
+        // Move the working range through the container's children, starting at the end and working backwards, until the
+        // working range reaches or goes past the boundary we're interested in
+        do {
+            containerElement.insertBefore(workingNode, workingNode.previousSibling);
+            workingRange.moveToElementText(workingNode);
+        } while ( (comparison = workingRange.compareEndPoints(workingComparisonType, textRange)) > 0 &&
+                workingNode.previousSibling);
+
+        // We've now reached or gone past the boundary of the text range we're interested in
+        // so have identified the node we want
+        boundaryNode = workingNode.nextSibling;
+
+        if (comparison == -1 && boundaryNode && dom.isCharacterDataNode(boundaryNode)) {
+            // This is a character data node (text, comment, cdata). The working range is collapsed at the start of the
+            // node containing the text range's boundary, so we move the end of the working range to the boundary point
+            // and measure the length of its text to get the boundary's offset within the node.
+            workingRange.setEndPoint(isStart ? "EndToStart" : "EndToEnd", textRange);
+
+
+            var offset;
+
+            if (/[\r\n]/.test(boundaryNode.data)) {
+                /*
+                For the particular case of a boundary within a text node containing line breaks (within a <pre> element,
+                for example), we need a slightly complicated approach to get the boundary's offset in IE. The facts:
+
+                - Each line break is represented as \r in the text node's data/nodeValue properties
+                - Each line break is represented as \r\n in the TextRange's 'text' property
+                - The 'text' property of the TextRange does not contain trailing line breaks
+
+                To get round the problem presented by the final fact above, we can use the fact that TextRange's
+                moveStart() and moveEnd() methods return the actual number of characters moved, which is not necessarily
+                the same as the number of characters it was instructed to move. The simplest approach is to use this to
+                store the characters moved when moving both the start and end of the range to the start of the document
+                body and subtracting the start offset from the end offset (the "move-negative-gazillion" method).
+                However, this is extremely slow when the document is large and the range is near the end of it. Clearly
+                doing the mirror image (i.e. moving the range boundaries to the end of the document) has the same
+                problem.
+
+                Another approach that works is to use moveStart() to move the start boundary of the range up to the end
+                boundary one character at a time and incrementing a counter with the value returned by the moveStart()
+                call. However, the check for whether the start boundary has reached the end boundary is expensive, so
+                this method is slow (although unlike "move-negative-gazillion" is largely unaffected by the location of
+                the range within the document).
+
+                The method below is a hybrid of the two methods above. It uses the fact that a string containing the
+                TextRange's 'text' property with each \r\n converted to a single \r character cannot be longer than the
+                text of the TextRange, so the start of the range is moved that length initially and then a character at
+                a time to make up for any trailing line breaks not contained in the 'text' property. This has good
+                performance in most situations compared to the previous two methods.
+                */
+                var tempRange = workingRange.duplicate();
+                var rangeLength = tempRange.text.replace(/\r\n/g, "\r").length;
+
+                offset = tempRange.moveStart("character", rangeLength);
+                while ( (comparison = tempRange.compareEndPoints("StartToEnd", tempRange)) == -1) {
+                    offset++;
+                    tempRange.moveStart("character", 1);
+                }
+            } else {
+                offset = workingRange.text.length;
+            }
+            boundaryPosition = new DomPosition(boundaryNode, offset);
+        } else {
+
+
+            // If the boundary immediately follows a character data node and this is the end boundary, we should favour
+            // a position within that, and likewise for a start boundary preceding a character data node
+            previousNode = (isCollapsed || !isStart) && workingNode.previousSibling;
+            nextNode = (isCollapsed || isStart) && workingNode.nextSibling;
+
+
+
+            if (nextNode && dom.isCharacterDataNode(nextNode)) {
+                boundaryPosition = new DomPosition(nextNode, 0);
+            } else if (previousNode && dom.isCharacterDataNode(previousNode)) {
+                boundaryPosition = new DomPosition(previousNode, previousNode.length);
+            } else {
+                boundaryPosition = new DomPosition(containerElement, dom.getNodeIndex(workingNode));
+            }
+        }
+
+        // Clean up
+        workingNode.parentNode.removeChild(workingNode);
+
+        return boundaryPosition;
+    }
+
+    // Returns a TextRange representing the boundary of a TextRange expressed as a node and an offset within that node.
+    // This function started out as an optimized version of code found in Tim Cameron Ryan's IERange
+    // (http://code.google.com/p/ierange/)
+    function createBoundaryTextRange(boundaryPosition, isStart) {
+        var boundaryNode, boundaryParent, boundaryOffset = boundaryPosition.offset;
+        var doc = dom.getDocument(boundaryPosition.node);
+        var workingNode, childNodes, workingRange = doc.body.createTextRange();
+        var nodeIsDataNode = dom.isCharacterDataNode(boundaryPosition.node);
+
+        if (nodeIsDataNode) {
+            boundaryNode = boundaryPosition.node;
+            boundaryParent = boundaryNode.parentNode;
+        } else {
+            childNodes = boundaryPosition.node.childNodes;
+            boundaryNode = (boundaryOffset < childNodes.length) ? childNodes[boundaryOffset] : null;
+            boundaryParent = boundaryPosition.node;
+        }
+
+        // Position the range immediately before the node containing the boundary
+        workingNode = doc.createElement("span");
+
+        // Making the working element non-empty element persuades IE to consider the TextRange boundary to be within the
+        // element rather than immediately before or after it, which is what we want
+        workingNode.innerHTML = "&#feff;";
+
+        // insertBefore is supposed to work like appendChild if the second parameter is null. However, a bug report
+        // for IERange suggests that it can crash the browser: http://code.google.com/p/ierange/issues/detail?id=12
+        if (boundaryNode) {
+            boundaryParent.insertBefore(workingNode, boundaryNode);
+        } else {
+            boundaryParent.appendChild(workingNode);
+        }
+
+        workingRange.moveToElementText(workingNode);
+        workingRange.collapse(!isStart);
+
+        // Clean up
+        boundaryParent.removeChild(workingNode);
+
+        // Move the working range to the text offset, if required
+        if (nodeIsDataNode) {
+            workingRange[isStart ? "moveStart" : "moveEnd"]("character", boundaryOffset);
+        }
+
+        return workingRange;
+    }
+
+    /*----------------------------------------------------------------------------------------------------------------*/
+
+    if (api.features.implementsDomRange && (!api.features.implementsTextRange || !api.config.preferTextRange)) {
+        // This is a wrapper around the browser's native DOM Range. It has two aims:
+        // - Provide workarounds for specific browser bugs
+        // - provide convenient extensions, which are inherited from Rangy's DomRange
+
+        (function() {
+            var rangeProto;
+            var rangeProperties = DomRange.rangeProperties;
+            var canSetRangeStartAfterEnd;
+
+            function updateRangeProperties(range) {
+                var i = rangeProperties.length, prop;
+                while (i--) {
+                    prop = rangeProperties[i];
+                    range[prop] = range.nativeRange[prop];
+                }
+            }
+
+            function updateNativeRange(range, startContainer, startOffset, endContainer,endOffset) {
+                var startMoved = (range.startContainer !== startContainer || range.startOffset != startOffset);
+                var endMoved = (range.endContainer !== endContainer || range.endOffset != endOffset);
+
+                // Always set both boundaries for the benefit of IE9 (see issue 35)
+                if (startMoved || endMoved) {
+                    range.setEnd(endContainer, endOffset);
+                    range.setStart(startContainer, startOffset);
+                }
+            }
+
+            function detach(range) {
+                range.nativeRange.detach();
+                range.detached = true;
+                var i = rangeProperties.length, prop;
+                while (i--) {
+                    prop = rangeProperties[i];
+                    range[prop] = null;
+                }
+            }
+
+            var createBeforeAfterNodeSetter;
+
+            WrappedRange = function(range) {
+                if (!range) {
+                    throw new Error("Range must be specified");
+                }
+                this.nativeRange = range;
+                updateRangeProperties(this);
+            };
+
+            DomRange.createPrototypeRange(WrappedRange, updateNativeRange, detach);
+
+            rangeProto = WrappedRange.prototype;
+
+            rangeProto.selectNode = function(node) {
+                this.nativeRange.selectNode(node);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.deleteContents = function() {
+                this.nativeRange.deleteContents();
+                updateRangeProperties(this);
+            };
+
+            rangeProto.extractContents = function() {
+                var frag = this.nativeRange.extractContents();
+                updateRangeProperties(this);
+                return frag;
+            };
+
+            rangeProto.cloneContents = function() {
+                return this.nativeRange.cloneContents();
+            };
+
+            // TODO: Until I can find a way to programmatically trigger the Firefox bug (apparently long-standing, still
+            // present in 3.6.8) that throws "Index or size is negative or greater than the allowed amount" for
+            // insertNode in some circumstances, all browsers will have to use the Rangy's own implementation of
+            // insertNode, which works but is almost certainly slower than the native implementation.
+/*
+            rangeProto.insertNode = function(node) {
+                this.nativeRange.insertNode(node);
+                updateRangeProperties(this);
+            };
+*/
+
+            rangeProto.surroundContents = function(node) {
+                this.nativeRange.surroundContents(node);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.collapse = function(isStart) {
+                this.nativeRange.collapse(isStart);
+                updateRangeProperties(this);
+            };
+
+            rangeProto.cloneRange = function() {
+                return new WrappedRange(this.nativeRange.cloneRange());
+            };
+
+            rangeProto.refresh = function() {
+                updateRangeProperties(this);
+            };
+
+            rangeProto.toString = function() {
+                return this.nativeRange.toString();
+            };
+
+            // Create test range and node for feature detection
+
+            var testTextNode = document.createTextNode("test");
+            dom.getBody(document).appendChild(testTextNode);
+            var range = document.createRange();
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for Firefox 2 bug that prevents moving the start of a Range to a point after its current end and
+            // correct for it
+
+            range.setStart(testTextNode, 0);
+            range.setEnd(testTextNode, 0);
+
+            try {
+                range.setStart(testTextNode, 1);
+                canSetRangeStartAfterEnd = true;
+
+                rangeProto.setStart = function(node, offset) {
+                    this.nativeRange.setStart(node, offset);
+                    updateRangeProperties(this);
+                };
+
+                rangeProto.setEnd = function(node, offset) {
+                    this.nativeRange.setEnd(node, offset);
+                    updateRangeProperties(this);
+                };
+
+                createBeforeAfterNodeSetter = function(name) {
+                    return function(node) {
+                        this.nativeRange[name](node);
+                        updateRangeProperties(this);
+                    };
+                };
+
+            } catch(ex) {
+
+
+                canSetRangeStartAfterEnd = false;
+
+                rangeProto.setStart = function(node, offset) {
+                    try {
+                        this.nativeRange.setStart(node, offset);
+                    } catch (ex) {
+                        this.nativeRange.setEnd(node, offset);
+                        this.nativeRange.setStart(node, offset);
+                    }
+                    updateRangeProperties(this);
+                };
+
+                rangeProto.setEnd = function(node, offset) {
+                    try {
+                        this.nativeRange.setEnd(node, offset);
+                    } catch (ex) {
+                        this.nativeRange.setStart(node, offset);
+                        this.nativeRange.setEnd(node, offset);
+                    }
+                    updateRangeProperties(this);
+                };
+
+                createBeforeAfterNodeSetter = function(name, oppositeName) {
+                    return function(node) {
+                        try {
+                            this.nativeRange[name](node);
+                        } catch (ex) {
+                            this.nativeRange[oppositeName](node);
+                            this.nativeRange[name](node);
+                        }
+                        updateRangeProperties(this);
+                    };
+                };
+            }
+
+            rangeProto.setStartBefore = createBeforeAfterNodeSetter("setStartBefore", "setEndBefore");
+            rangeProto.setStartAfter = createBeforeAfterNodeSetter("setStartAfter", "setEndAfter");
+            rangeProto.setEndBefore = createBeforeAfterNodeSetter("setEndBefore", "setStartBefore");
+            rangeProto.setEndAfter = createBeforeAfterNodeSetter("setEndAfter", "setStartAfter");
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for and correct Firefox 2 behaviour with selectNodeContents on text nodes: it collapses the range to
+            // the 0th character of the text node
+            range.selectNodeContents(testTextNode);
+            if (range.startContainer == testTextNode && range.endContainer == testTextNode &&
+                    range.startOffset == 0 && range.endOffset == testTextNode.length) {
+                rangeProto.selectNodeContents = function(node) {
+                    this.nativeRange.selectNodeContents(node);
+                    updateRangeProperties(this);
+                };
+            } else {
+                rangeProto.selectNodeContents = function(node) {
+                    this.setStart(node, 0);
+                    this.setEnd(node, DomRange.getEndOffset(node));
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for WebKit bug that has the beahviour of compareBoundaryPoints round the wrong way for constants
+            // START_TO_END and END_TO_START: https://bugs.webkit.org/show_bug.cgi?id=20738
+
+            range.selectNodeContents(testTextNode);
+            range.setEnd(testTextNode, 3);
+
+            var range2 = document.createRange();
+            range2.selectNodeContents(testTextNode);
+            range2.setEnd(testTextNode, 4);
+            range2.setStart(testTextNode, 2);
+
+            if (range.compareBoundaryPoints(range.START_TO_END, range2) == -1 &
+                    range.compareBoundaryPoints(range.END_TO_START, range2) == 1) {
+                // This is the wrong way round, so correct for it
+
+
+                rangeProto.compareBoundaryPoints = function(type, range) {
+                    range = range.nativeRange || range;
+                    if (type == range.START_TO_END) {
+                        type = range.END_TO_START;
+                    } else if (type == range.END_TO_START) {
+                        type = range.START_TO_END;
+                    }
+                    return this.nativeRange.compareBoundaryPoints(type, range);
+                };
+            } else {
+                rangeProto.compareBoundaryPoints = function(type, range) {
+                    return this.nativeRange.compareBoundaryPoints(type, range.nativeRange || range);
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Test for existence of createContextualFragment and delegate to it if it exists
+            if (api.util.isHostMethod(range, "createContextualFragment")) {
+                rangeProto.createContextualFragment = function(fragmentStr) {
+                    return this.nativeRange.createContextualFragment(fragmentStr);
+                };
+            }
+
+            /*--------------------------------------------------------------------------------------------------------*/
+
+            // Clean up
+            dom.getBody(document).removeChild(testTextNode);
+            range.detach();
+            range2.detach();
+        })();
+
+        api.createNativeRange = function(doc) {
+            doc = doc || document;
+            return doc.createRange();
+        };
+    } else if (api.features.implementsTextRange) {
+        // This is a wrapper around a TextRange, providing full DOM Range functionality using rangy's DomRange as a
+        // prototype
+
+        WrappedRange = function(textRange) {
+            this.textRange = textRange;
+            this.refresh();
+        };
+
+        WrappedRange.prototype = new DomRange(document);
+
+        WrappedRange.prototype.refresh = function() {
+            var start, end;
+
+            // TextRange's parentElement() method cannot be trusted. getTextRangeContainerElement() works around that.
+            var rangeContainerElement = getTextRangeContainerElement(this.textRange);
+
+            if (textRangeIsCollapsed(this.textRange)) {
+                end = start = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, true);
+            } else {
+
+                start = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, false);
+                end = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, false, false);
+            }
+
+            this.setStart(start.node, start.offset);
+            this.setEnd(end.node, end.offset);
+        };
+
+        DomRange.copyComparisonConstants(WrappedRange);
+
+        // Add WrappedRange as the Range property of the global object to allow expression like Range.END_TO_END to work
+        var globalObj = (function() { return this; })();
+        if (typeof globalObj.Range == "undefined") {
+            globalObj.Range = WrappedRange;
+        }
+
+        api.createNativeRange = function(doc) {
+            doc = doc || document;
+            return doc.body.createTextRange();
+        };
+    }
+
+    if (api.features.implementsTextRange) {
+        WrappedRange.rangeToTextRange = function(range) {
+            if (range.collapsed) {
+                var tr = createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+
+
+
+                return tr;
+
+                //return createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+            } else {
+                var startRange = createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
+                var endRange = createBoundaryTextRange(new DomPosition(range.endContainer, range.endOffset), false);
+                var textRange = dom.getDocument(range.startContainer).body.createTextRange();
+                textRange.setEndPoint("StartToStart", startRange);
+                textRange.setEndPoint("EndToEnd", endRange);
+                return textRange;
+            }
+        };
+    }
+
+    WrappedRange.prototype.getName = function() {
+        return "WrappedRange";
+    };
+
+    api.WrappedRange = WrappedRange;
+
+    api.createRange = function(doc) {
+        doc = doc || document;
+        return new WrappedRange(api.createNativeRange(doc));
+    };
+
+    api.createRangyRange = function(doc) {
+        doc = doc || document;
+        return new DomRange(doc);
+    };
+
+    api.createIframeRange = function(iframeEl) {
+        return api.createRange(dom.getIframeDocument(iframeEl));
+    };
+
+    api.createIframeRangyRange = function(iframeEl) {
+        return api.createRangyRange(dom.getIframeDocument(iframeEl));
+    };
+
+    api.addCreateMissingNativeApiListener(function(win) {
+        var doc = win.document;
+        if (typeof doc.createRange == "undefined") {
+            doc.createRange = function() {
+                return api.createRange(this);
+            };
+        }
+        doc = win = null;
+    });
+});rangy.createModule("WrappedSelection", function(api, module) {
+    // This will create a selection object wrapper that follows the Selection object found in the WHATWG draft DOM Range
+    // spec (http://html5.org/specs/dom-range.html)
+
+    api.requireModules( ["DomUtil", "DomRange", "WrappedRange"] );
+
+    api.config.checkSelectionRanges = true;
+
+    var BOOLEAN = "boolean",
+        windowPropertyName = "_rangySelection",
+        dom = api.dom,
+        util = api.util,
+        DomRange = api.DomRange,
+        WrappedRange = api.WrappedRange,
+        DOMException = api.DOMException,
+        DomPosition = dom.DomPosition,
+        getSelection,
+        selectionIsCollapsed,
+        CONTROL = "Control";
+
+
+
+    function getWinSelection(winParam) {
+        return (winParam || window).getSelection();
+    }
+
+    function getDocSelection(winParam) {
+        return (winParam || window).document.selection;
+    }
+
+    // Test for the Range/TextRange and Selection features required
+    // Test for ability to retrieve selection
+    var implementsWinGetSelection = api.util.isHostMethod(window, "getSelection"),
+        implementsDocSelection = api.util.isHostObject(document, "selection");
+
+    var useDocumentSelection = implementsDocSelection && (!implementsWinGetSelection || api.config.preferTextRange);
+
+    if (useDocumentSelection) {
+        getSelection = getDocSelection;
+        api.isSelectionValid = function(winParam) {
+            var doc = (winParam || window).document, nativeSel = doc.selection;
+
+            // Check whether the selection TextRange is actually contained within the correct document
+            return (nativeSel.type != "None" || dom.getDocument(nativeSel.createRange().parentElement()) == doc);
+        };
+    } else if (implementsWinGetSelection) {
+        getSelection = getWinSelection;
+        api.isSelectionValid = function() {
+            return true;
+        };
+    } else {
+        module.fail("Neither document.selection or window.getSelection() detected.");
+    }
+
+    api.getNativeSelection = getSelection;
+
+    var testSelection = getSelection();
+    var testRange = api.createNativeRange(document);
+    var body = dom.getBody(document);
+
+    // Obtaining a range from a selection
+    var selectionHasAnchorAndFocus = util.areHostObjects(testSelection, ["anchorNode", "focusNode"] &&
+                                     util.areHostProperties(testSelection, ["anchorOffset", "focusOffset"]));
+    api.features.selectionHasAnchorAndFocus = selectionHasAnchorAndFocus;
+
+    // Test for existence of native selection extend() method
+    var selectionHasExtend = util.isHostMethod(testSelection, "extend");
+    api.features.selectionHasExtend = selectionHasExtend;
+
+    // Test if rangeCount exists
+    var selectionHasRangeCount = (typeof testSelection.rangeCount == "number");
+    api.features.selectionHasRangeCount = selectionHasRangeCount;
+
+    var selectionSupportsMultipleRanges = false;
+    var collapsedNonEditableSelectionsSupported = true;
+
+    if (util.areHostMethods(testSelection, ["addRange", "getRangeAt", "removeAllRanges"]) &&
+            typeof testSelection.rangeCount == "number" && api.features.implementsDomRange) {
+
+        (function() {
+            var iframe = document.createElement("iframe");
+            iframe.frameBorder = 0;
+            iframe.style.position = "absolute";
+            iframe.style.left = "-10000px";
+            body.appendChild(iframe);
+
+            var iframeDoc = dom.getIframeDocument(iframe);
+            iframeDoc.open();
+            iframeDoc.write("<html><head></head><body>12</body></html>");
+            iframeDoc.close();
+
+            var sel = dom.getIframeWindow(iframe).getSelection();
+            var docEl = iframeDoc.documentElement;
+            var iframeBody = docEl.lastChild, textNode = iframeBody.firstChild;
+
+            // Test whether the native selection will allow a collapsed selection within a non-editable element
+            var r1 = iframeDoc.createRange();
+            r1.setStart(textNode, 1);
+            r1.collapse(true);
+            sel.addRange(r1);
+            collapsedNonEditableSelectionsSupported = (sel.rangeCount == 1);
+            sel.removeAllRanges();
+
+            // Test whether the native selection is capable of supporting multiple ranges
+            var r2 = r1.cloneRange();
+            r1.setStart(textNode, 0);
+            r2.setEnd(textNode, 2);
+            sel.addRange(r1);
+            sel.addRange(r2);
+
+            selectionSupportsMultipleRanges = (sel.rangeCount == 2);
+
+            // Clean up
+            r1.detach();
+            r2.detach();
+
+            body.removeChild(iframe);
+        })();
+    }
+
+    api.features.selectionSupportsMultipleRanges = selectionSupportsMultipleRanges;
+    api.features.collapsedNonEditableSelectionsSupported = collapsedNonEditableSelectionsSupported;
+
+    // ControlRanges
+    var implementsControlRange = false, testControlRange;
+
+    if (body && util.isHostMethod(body, "createControlRange")) {
+        testControlRange = body.createControlRange();
+        if (util.areHostProperties(testControlRange, ["item", "add"])) {
+            implementsControlRange = true;
+        }
+    }
+    api.features.implementsControlRange = implementsControlRange;
+
+    // Selection collapsedness
+    if (selectionHasAnchorAndFocus) {
+        selectionIsCollapsed = function(sel) {
+            return sel.anchorNode === sel.focusNode && sel.anchorOffset === sel.focusOffset;
+        };
+    } else {
+        selectionIsCollapsed = function(sel) {
+            return sel.rangeCount ? sel.getRangeAt(sel.rangeCount - 1).collapsed : false;
+        };
+    }
+
+    function updateAnchorAndFocusFromRange(sel, range, backwards) {
+        var anchorPrefix = backwards ? "end" : "start", focusPrefix = backwards ? "start" : "end";
+        sel.anchorNode = range[anchorPrefix + "Container"];
+        sel.anchorOffset = range[anchorPrefix + "Offset"];
+        sel.focusNode = range[focusPrefix + "Container"];
+        sel.focusOffset = range[focusPrefix + "Offset"];
+    }
+
+    function updateAnchorAndFocusFromNativeSelection(sel) {
+        var nativeSel = sel.nativeSelection;
+        sel.anchorNode = nativeSel.anchorNode;
+        sel.anchorOffset = nativeSel.anchorOffset;
+        sel.focusNode = nativeSel.focusNode;
+        sel.focusOffset = nativeSel.focusOffset;
+    }
+
+    function updateEmptySelection(sel) {
+        sel.anchorNode = sel.focusNode = null;
+        sel.anchorOffset = sel.focusOffset = 0;
+        sel.rangeCount = 0;
+        sel.isCollapsed = true;
+        sel._ranges.length = 0;
+    }
+
+    function getNativeRange(range) {
+        var nativeRange;
+        if (range instanceof DomRange) {
+            nativeRange = range._selectionNativeRange;
+            if (!nativeRange) {
+                nativeRange = api.createNativeRange(dom.getDocument(range.startContainer));
+                nativeRange.setEnd(range.endContainer, range.endOffset);
+                nativeRange.setStart(range.startContainer, range.startOffset);
+                range._selectionNativeRange = nativeRange;
+                range.attachListener("detach", function() {
+
+                    this._selectionNativeRange = null;
+                });
+            }
+        } else if (range instanceof WrappedRange) {
+            nativeRange = range.nativeRange;
+        } else if (api.features.implementsDomRange && (range instanceof dom.getWindow(range.startContainer).Range)) {
+            nativeRange = range;
+        }
+        return nativeRange;
+    }
+
+    function rangeContainsSingleElement(rangeNodes) {
+        if (!rangeNodes.length || rangeNodes[0].nodeType != 1) {
+            return false;
+        }
+        for (var i = 1, len = rangeNodes.length; i < len; ++i) {
+            if (!dom.isAncestorOf(rangeNodes[0], rangeNodes[i])) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    function getSingleElementFromRange(range) {
+        var nodes = range.getNodes();
+        if (!rangeContainsSingleElement(nodes)) {
+            throw new Error("getSingleElementFromRange: range " + range.inspect() + " did not consist of a single element");
+        }
+        return nodes[0];
+    }
+
+    function isTextRange(range) {
+        return !!range && typeof range.text != "undefined";
+    }
+
+    function updateFromTextRange(sel, range) {
+        // Create a Range from the selected TextRange
+        var wrappedRange = new WrappedRange(range);
+        sel._ranges = [wrappedRange];
+
+        updateAnchorAndFocusFromRange(sel, wrappedRange, false);
+        sel.rangeCount = 1;
+        sel.isCollapsed = wrappedRange.collapsed;
+    }
+
+    function updateControlSelection(sel) {
+        // Update the wrapped selection based on what's now in the native selection
+        sel._ranges.length = 0;
+        if (sel.docSelection.type == "None") {
+            updateEmptySelection(sel);
+        } else {
+            var controlRange = sel.docSelection.createRange();
+            if (isTextRange(controlRange)) {
+                // This case (where the selection type is "Control" and calling createRange() on the selection returns
+                // a TextRange) can happen in IE 9. It happens, for example, when all elements in the selected
+                // ControlRange have been removed from the ControlRange and removed from the document.
+                updateFromTextRange(sel, controlRange);
+            } else {
+                sel.rangeCount = controlRange.length;
+                var range, doc = dom.getDocument(controlRange.item(0));
+                for (var i = 0; i < sel.rangeCount; ++i) {
+                    range = api.createRange(doc);
+                    range.selectNode(controlRange.item(i));
+                    sel._ranges.push(range);
+                }
+                sel.isCollapsed = sel.rangeCount == 1 && sel._ranges[0].collapsed;
+                updateAnchorAndFocusFromRange(sel, sel._ranges[sel.rangeCount - 1], false);
+            }
+        }
+    }
+
+    function addRangeToControlSelection(sel, range) {
+        var controlRange = sel.docSelection.createRange();
+        var rangeElement = getSingleElementFromRange(range);
+
+        // Create a new ControlRange containing all the elements in the selected ControlRange plus the element
+        // contained by the supplied range
+        var doc = dom.getDocument(controlRange.item(0));
+        var newControlRange = dom.getBody(doc).createControlRange();
+        for (var i = 0, len = controlRange.length; i < len; ++i) {
+            newControlRange.add(controlRange.item(i));
+        }
+        try {
+            newControlRange.add(rangeElement);
+        } catch (ex) {
+            throw new Error("addRange(): Element within the specified Range could not be added to control selection (does it have layout?)");
+        }
+        newControlRange.select();
+
+        // Update the wrapped selection based on what's now in the native selection
+        updateControlSelection(sel);
+    }
+
+    var getSelectionRangeAt;
+
+    if (util.isHostMethod(testSelection,  "getRangeAt")) {
+        getSelectionRangeAt = function(sel, index) {
+            try {
+                return sel.getRangeAt(index);
+            } catch(ex) {
+                return null;
+            }
+        };
+    } else if (selectionHasAnchorAndFocus) {
+        getSelectionRangeAt = function(sel) {
+            var doc = dom.getDocument(sel.anchorNode);
+            var range = api.createRange(doc);
+            range.setStart(sel.anchorNode, sel.anchorOffset);
+            range.setEnd(sel.focusNode, sel.focusOffset);
+
+            // Handle the case when the selection was selected backwards (from the end to the start in the
+            // document)
+            if (range.collapsed !== this.isCollapsed) {
+                range.setStart(sel.focusNode, sel.focusOffset);
+                range.setEnd(sel.anchorNode, sel.anchorOffset);
+            }
+
+            return range;
+        };
+    }
+
+    /**
+     * @constructor
+     */
+    function WrappedSelection(selection, docSelection, win) {
+        this.nativeSelection = selection;
+        this.docSelection = docSelection;
+        this._ranges = [];
+        this.win = win;
+        this.refresh();
+    }
+
+    api.getSelection = function(win) {
+        win = win || window;
+        var sel = win[windowPropertyName];
+        var nativeSel = getSelection(win), docSel = implementsDocSelection ? getDocSelection(win) : null;
+        if (sel) {
+            sel.nativeSelection = nativeSel;
+            sel.docSelection = docSel;
+            sel.refresh(win);
+        } else {
+            sel = new WrappedSelection(nativeSel, docSel, win);
+            win[windowPropertyName] = sel;
+        }
+        return sel;
+    };
+
+    api.getIframeSelection = function(iframeEl) {
+        return api.getSelection(dom.getIframeWindow(iframeEl));
+    };
+
+    var selProto = WrappedSelection.prototype;
+
+    function createControlSelection(sel, ranges) {
+        // Ensure that the selection becomes of type "Control"
+        var doc = dom.getDocument(ranges[0].startContainer);
+        var controlRange = dom.getBody(doc).createControlRange();
+        for (var i = 0, el; i < rangeCount; ++i) {
+            el = getSingleElementFromRange(ranges[i]);
+            try {
+                controlRange.add(el);
+            } catch (ex) {
+                throw new Error("setRanges(): Element within the one of the specified Ranges could not be added to control selection (does it have layout?)");
+            }
+        }
+        controlRange.select();
+
+        // Update the wrapped selection based on what's now in the native selection
+        updateControlSelection(sel);
+    }
+
+    // Selecting a range
+    if (!useDocumentSelection && selectionHasAnchorAndFocus && util.areHostMethods(testSelection, ["removeAllRanges", "addRange"])) {
+        selProto.removeAllRanges = function() {
+            this.nativeSelection.removeAllRanges();
+            updateEmptySelection(this);
+        };
+
+        var addRangeBackwards = function(sel, range) {
+            var doc = DomRange.getRangeDocument(range);
+            var endRange = api.createRange(doc);
+            endRange.collapseToPoint(range.endContainer, range.endOffset);
+            sel.nativeSelection.addRange(getNativeRange(endRange));
+            sel.nativeSelection.extend(range.startContainer, range.startOffset);
+            sel.refresh();
+        };
+
+        if (selectionHasRangeCount) {
+            selProto.addRange = function(range, backwards) {
+                if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
+                    addRangeToControlSelection(this, range);
+                } else {
+                    if (backwards && selectionHasExtend) {
+                        addRangeBackwards(this, range);
+                    } else {
+                        var previousRangeCount;
+                        if (selectionSupportsMultipleRanges) {
+                            previousRangeCount = this.rangeCount;
+                        } else {
+                            this.removeAllRanges();
+                            previousRangeCount = 0;
+                        }
+                        this.nativeSelection.addRange(getNativeRange(range));
+
+                        // Check whether adding the range was successful
+                        this.rangeCount = this.nativeSelection.rangeCount;
+
+                        if (this.rangeCount == previousRangeCount + 1) {
+                            // The range was added successfully
+
+                            // Check whether the range that we added to the selection is reflected in the last range extracted from
+                            // the selection
+                            if (api.config.checkSelectionRanges) {
+                                var nativeRange = getSelectionRangeAt(this.nativeSelection, this.rangeCount - 1);
+                                if (nativeRange && !DomRange.rangesEqual(nativeRange, range)) {
+                                    // Happens in WebKit with, for example, a selection placed at the start of a text node
+                                    range = new WrappedRange(nativeRange);
+                                }
+                            }
+                            this._ranges[this.rangeCount - 1] = range;
+                            updateAnchorAndFocusFromRange(this, range, selectionIsBackwards(this.nativeSelection));
+                            this.isCollapsed = selectionIsCollapsed(this);
+                        } else {
+                            // The range was not added successfully. The simplest thing is to refresh
+                            this.refresh();
+                        }
+                    }
+                }
+            };
+        } else {
+            selProto.addRange = function(range, backwards) {
+                if (backwards && selectionHasExtend) {
+                    addRangeBackwards(this, range);
+                } else {
+                    this.nativeSelection.addRange(getNativeRange(range));
+                    this.refresh();
+                }
+            };
+        }
+
+        selProto.setRanges = function(ranges) {
+            if (implementsControlRange && ranges.length > 1) {
+                createControlSelection(this, ranges);
+            } else {
+                this.removeAllRanges();
+                for (var i = 0, len = ranges.length; i < len; ++i) {
+                    this.addRange(ranges[i]);
+                }
+            }
+        };
+    } else if (util.isHostMethod(testSelection, "empty") && util.isHostMethod(testRange, "select") &&
+               implementsControlRange && useDocumentSelection) {
+
+        selProto.removeAllRanges = function() {
+            // Added try/catch as fix for issue #21
+            try {
+                this.docSelection.empty();
+
+                // Check for empty() not working (issue #24)
+                if (this.docSelection.type != "None") {
+                    // Work around failure to empty a control selection by instead selecting a TextRange and then
+                    // calling empty()
+                    var doc;
+                    if (this.anchorNode) {
+                        doc = dom.getDocument(this.anchorNode);
+                    } else if (this.docSelection.type == CONTROL) {
+                        var controlRange = this.docSelection.createRange();
+                        if (controlRange.length) {
+                            doc = dom.getDocument(controlRange.item(0)).body.createTextRange();
+                        }
+                    }
+                    if (doc) {
+                        var textRange = doc.body.createTextRange();
+                        textRange.select();
+                        this.docSelection.empty();
+                    }
+                }
+            } catch(ex) {}
+            updateEmptySelection(this);
+        };
+
+        selProto.addRange = function(range) {
+            if (this.docSelection.type == CONTROL) {
+                addRangeToControlSelection(this, range);
+            } else {
+                WrappedRange.rangeToTextRange(range).select();
+                this._ranges[0] = range;
+                this.rangeCount = 1;
+                this.isCollapsed = this._ranges[0].collapsed;
+                updateAnchorAndFocusFromRange(this, range, false);
+            }
+        };
+
+        selProto.setRanges = function(ranges) {
+            this.removeAllRanges();
+            var rangeCount = ranges.length;
+            if (rangeCount > 1) {
+                createControlSelection(this, ranges);
+            } else if (rangeCount) {
+                this.addRange(ranges[0]);
+            }
+        };
+    } else {
+        module.fail("No means of selecting a Range or TextRange was found");
+        return false;
+    }
+
+    selProto.getRangeAt = function(index) {
+        if (index < 0 || index >= this.rangeCount) {
+            throw new DOMException("INDEX_SIZE_ERR");
+        } else {
+            return this._ranges[index];
+        }
+    };
+
+    var refreshSelection;
+
+    if (useDocumentSelection) {
+        refreshSelection = function(sel) {
+            var range;
+            if (api.isSelectionValid(sel.win)) {
+                range = sel.docSelection.createRange();
+            } else {
+                range = dom.getBody(sel.win.document).createTextRange();
+                range.collapse(true);
+            }
+
+
+            if (sel.docSelection.type == CONTROL) {
+                updateControlSelection(sel);
+            } else if (isTextRange(range)) {
+                updateFromTextRange(sel, range);
+            } else {
+                updateEmptySelection(sel);
+            }
+        };
+    } else if (util.isHostMethod(testSelection, "getRangeAt") && typeof testSelection.rangeCount == "number") {
+        refreshSelection = function(sel) {
+            if (implementsControlRange && implementsDocSelection && sel.docSelection.type == CONTROL) {
+                updateControlSelection(sel);
+            } else {
+                sel._ranges.length = sel.rangeCount = sel.nativeSelection.rangeCount;
+                if (sel.rangeCount) {
+                    for (var i = 0, len = sel.rangeCount; i < len; ++i) {
+                        sel._ranges[i] = new api.WrappedRange(sel.nativeSelection.getRangeAt(i));
+                    }
+                    updateAnchorAndFocusFromRange(sel, sel._ranges[sel.rangeCount - 1], selectionIsBackwards(sel.nativeSelection));
+                    sel.isCollapsed = selectionIsCollapsed(sel);
+                } else {
+                    updateEmptySelection(sel);
+                }
+            }
+        };
+    } else if (selectionHasAnchorAndFocus && typeof testSelection.isCollapsed == BOOLEAN && typeof testRange.collapsed == BOOLEAN && api.features.implementsDomRange) {
+        refreshSelection = function(sel) {
+            var range, nativeSel = sel.nativeSelection;
+            if (nativeSel.anchorNode) {
+                range = getSelectionRangeAt(nativeSel, 0);
+                sel._ranges = [range];
+                sel.rangeCount = 1;
+                updateAnchorAndFocusFromNativeSelection(sel);
+                sel.isCollapsed = selectionIsCollapsed(sel);
+            } else {
+                updateEmptySelection(sel);
+            }
+        };
+    } else {
+        module.fail("No means of obtaining a Range or TextRange from the user's selection was found");
+        return false;
+    }
+
+    selProto.refresh = function(checkForChanges) {
+        var oldRanges = checkForChanges ? this._ranges.slice(0) : null;
+        refreshSelection(this);
+        if (checkForChanges) {
+            var i = oldRanges.length;
+            if (i != this._ranges.length) {
+                return false;
+            }
+            while (i--) {
+                if (!DomRange.rangesEqual(oldRanges[i], this._ranges[i])) {
+                    return false;
+                }
+            }
+            return true;
+        }
+    };
+
+    // Removal of a single range
+    var removeRangeManually = function(sel, range) {
+        var ranges = sel.getAllRanges(), removed = false;
+        sel.removeAllRanges();
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            if (removed || range !== ranges[i]) {
+                sel.addRange(ranges[i]);
+            } else {
+                // According to the draft WHATWG Range spec, the same range may be added to the selection multiple
+                // times. removeRange should only remove the first instance, so the following ensures only the first
+                // instance is removed
+                removed = true;
+            }
+        }
+        if (!sel.rangeCount) {
+            updateEmptySelection(sel);
+        }
+    };
+
+    if (implementsControlRange) {
+        selProto.removeRange = function(range) {
+            if (this.docSelection.type == CONTROL) {
+                var controlRange = this.docSelection.createRange();
+                var rangeElement = getSingleElementFromRange(range);
+
+                // Create a new ControlRange containing all the elements in the selected ControlRange minus the
+                // element contained by the supplied range
+                var doc = dom.getDocument(controlRange.item(0));
+                var newControlRange = dom.getBody(doc).createControlRange();
+                var el, removed = false;
+                for (var i = 0, len = controlRange.length; i < len; ++i) {
+                    el = controlRange.item(i);
+                    if (el !== rangeElement || removed) {
+                        newControlRange.add(controlRange.item(i));
+                    } else {
+                        removed = true;
+                    }
+                }
+                newControlRange.select();
+
+                // Update the wrapped selection based on what's now in the native selection
+                updateControlSelection(this);
+            } else {
+                removeRangeManually(this, range);
+            }
+        };
+    } else {
+        selProto.removeRange = function(range) {
+            removeRangeManually(this, range);
+        };
+    }
+
+    // Detecting if a selection is backwards
+    var selectionIsBackwards;
+    if (!useDocumentSelection && selectionHasAnchorAndFocus && api.features.implementsDomRange) {
+        selectionIsBackwards = function(sel) {
+            var backwards = false;
+            if (sel.anchorNode) {
+                backwards = (dom.comparePoints(sel.anchorNode, sel.anchorOffset, sel.focusNode, sel.focusOffset) == 1);
+            }
+            return backwards;
+        };
+
+        selProto.isBackwards = function() {
+            return selectionIsBackwards(this);
+        };
+    } else {
+        selectionIsBackwards = selProto.isBackwards = function() {
+            return false;
+        };
+    }
+
+    // Selection text
+    // This is conformant to the new WHATWG DOM Range draft spec but differs from WebKit and Mozilla's implementation
+    selProto.toString = function() {
+
+        var rangeTexts = [];
+        for (var i = 0, len = this.rangeCount; i < len; ++i) {
+            rangeTexts[i] = "" + this._ranges[i];
+        }
+        return rangeTexts.join("");
+    };
+
+    function assertNodeInSameDocument(sel, node) {
+        if (sel.anchorNode && (dom.getDocument(sel.anchorNode) !== dom.getDocument(node))) {
+            throw new DOMException("WRONG_DOCUMENT_ERR");
+        }
+    }
+
+    // No current browsers conform fully to the HTML 5 draft spec for this method, so Rangy's own method is always used
+    selProto.collapse = function(node, offset) {
+        assertNodeInSameDocument(this, node);
+        var range = api.createRange(dom.getDocument(node));
+        range.collapseToPoint(node, offset);
+        this.removeAllRanges();
+        this.addRange(range);
+        this.isCollapsed = true;
+    };
+
+    selProto.collapseToStart = function() {
+        if (this.rangeCount) {
+            var range = this._ranges[0];
+            this.collapse(range.startContainer, range.startOffset);
+        } else {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    };
+
+    selProto.collapseToEnd = function() {
+        if (this.rangeCount) {
+            var range = this._ranges[this.rangeCount - 1];
+            this.collapse(range.endContainer, range.endOffset);
+        } else {
+            throw new DOMException("INVALID_STATE_ERR");
+        }
+    };
+
+    // The HTML 5 spec is very specific on how selectAllChildren should be implemented so the native implementation is
+    // never used by Rangy.
+    selProto.selectAllChildren = function(node) {
+        assertNodeInSameDocument(this, node);
+        var range = api.createRange(dom.getDocument(node));
+        range.selectNodeContents(node);
+        this.removeAllRanges();
+        this.addRange(range);
+    };
+
+    selProto.deleteFromDocument = function() {
+        // Sepcial behaviour required for Control selections
+        if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
+            var controlRange = this.docSelection.createRange();
+            var element;
+            while (controlRange.length) {
+                element = controlRange.item(0);
+                controlRange.remove(element);
+                element.parentNode.removeChild(element);
+            }
+            this.refresh();
+        } else if (this.rangeCount) {
+            var ranges = this.getAllRanges();
+            this.removeAllRanges();
+            for (var i = 0, len = ranges.length; i < len; ++i) {
+                ranges[i].deleteContents();
+            }
+            // The HTML5 spec says nothing about what the selection should contain after calling deleteContents on each
+            // range. Firefox moves the selection to where the final selected range was, so we emulate that
+            this.addRange(ranges[len - 1]);
+        }
+    };
+
+    // The following are non-standard extensions
+    selProto.getAllRanges = function() {
+        return this._ranges.slice(0);
+    };
+
+    selProto.setSingleRange = function(range) {
+        this.setRanges( [range] );
+    };
+
+    selProto.containsNode = function(node, allowPartial) {
+        for (var i = 0, len = this._ranges.length; i < len; ++i) {
+            if (this._ranges[i].containsNode(node, allowPartial)) {
+                return true;
+            }
+        }
+        return false;
+    };
+
+    selProto.toHtml = function() {
+        var html = "";
+        if (this.rangeCount) {
+            var container = DomRange.getRangeDocument(this._ranges[0]).createElement("div");
+            for (var i = 0, len = this._ranges.length; i < len; ++i) {
+                container.appendChild(this._ranges[i].cloneContents());
+            }
+            html = container.innerHTML;
+        }
+        return html;
+    };
+
+    function inspect(sel) {
+        var rangeInspects = [];
+        var anchor = new DomPosition(sel.anchorNode, sel.anchorOffset);
+        var focus = new DomPosition(sel.focusNode, sel.focusOffset);
+        var name = (typeof sel.getName == "function") ? sel.getName() : "Selection";
+
+        if (typeof sel.rangeCount != "undefined") {
+            for (var i = 0, len = sel.rangeCount; i < len; ++i) {
+                rangeInspects[i] = DomRange.inspect(sel.getRangeAt(i));
+            }
+        }
+        return "[" + name + "(Ranges: " + rangeInspects.join(", ") +
+                ")(anchor: " + anchor.inspect() + ", focus: " + focus.inspect() + "]";
+
+    }
+
+    selProto.getName = function() {
+        return "WrappedSelection";
+    };
+
+    selProto.inspect = function() {
+        return inspect(this);
+    };
+
+    selProto.detach = function() {
+        this.win[windowPropertyName] = null;
+        this.win = this.anchorNode = this.focusNode = null;
+    };
+
+    WrappedSelection.inspect = inspect;
+
+    api.Selection = WrappedSelection;
+
+    api.selectionPrototype = selProto;
+
+    api.addCreateMissingNativeApiListener(function(win) {
+        if (typeof win.getSelection == "undefined") {
+            win.getSelection = function() {
+                return api.getSelection(this);
+            };
+        }
+        win = null;
+    });
+});
diff --git a/lib/editor/atto/yui/src/rangy/js/rangy-cssclassapplier.js b/lib/editor/atto/yui/src/rangy/js/rangy-cssclassapplier.js
new file mode 100644
index 00000000000..8c579cd9168
--- /dev/null
+++ b/lib/editor/atto/yui/src/rangy/js/rangy-cssclassapplier.js
@@ -0,0 +1,713 @@
+/**
+ * @license CSS Class Applier module for Rangy.
+ * Adds, removes and toggles CSS classes on Ranges and Selections
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("CssClassApplier", function(api, module) {
+    api.requireModules( ["WrappedSelection", "WrappedRange"] );
+
+    var dom = api.dom;
+
+
+
+    var defaultTagName = "span";
+
+    function trim(str) {
+        return str.replace(/^\s\s*/, "").replace(/\s\s*$/, "");
+    }
+
+    function hasClass(el, cssClass) {
+        return el.className && new RegExp("(?:^|\\s)" + cssClass + "(?:\\s|$)").test(el.className);
+    }
+
+    function addClass(el, cssClass) {
+        if (el.className) {
+            if (!hasClass(el, cssClass)) {
+                el.className += " " + cssClass;
+            }
+        } else {
+            el.className = cssClass;
+        }
+    }
+
+    var removeClass = (function() {
+        function replacer(matched, whiteSpaceBefore, whiteSpaceAfter) {
+            return (whiteSpaceBefore && whiteSpaceAfter) ? " " : "";
+        }
+
+        return function(el, cssClass) {
+            if (el.className) {
+                el.className = el.className.replace(new RegExp("(?:^|\\s)" + cssClass + "(?:\\s|$)"), replacer);
+            }
+        };
+    })();
+
+    function sortClassName(className) {
+        return className.split(/\s+/).sort().join(" ");
+    }
+
+    function getSortedClassName(el) {
+        return sortClassName(el.className);
+    }
+
+    function haveSameClasses(el1, el2) {
+        return getSortedClassName(el1) == getSortedClassName(el2);
+    }
+
+    function replaceWithOwnChildren(el) {
+
+        var parent = el.parentNode;
+        while (el.hasChildNodes()) {
+            parent.insertBefore(el.firstChild, el);
+        }
+        parent.removeChild(el);
+    }
+
+    function rangeSelectsAnyText(range, textNode) {
+        var textRange = range.cloneRange();
+        textRange.selectNodeContents(textNode);
+
+        var intersectionRange = textRange.intersection(range);
+        var text = intersectionRange ? intersectionRange.toString() : "";
+        textRange.detach();
+
+        return text != "";
+    }
+
+    function getEffectiveTextNodes(range) {
+        return range.getNodes([3], function(textNode) {
+            return rangeSelectsAnyText(range, textNode);
+        });
+    }
+
+    function elementsHaveSameNonClassAttributes(el1, el2) {
+        if (el1.attributes.length != el2.attributes.length) return false;
+        for (var i = 0, len = el1.attributes.length, attr1, attr2, name; i < len; ++i) {
+            attr1 = el1.attributes[i];
+            name = attr1.name;
+            if (name != "class") {
+                attr2 = el2.attributes.getNamedItem(name);
+                if (attr1.specified != attr2.specified) return false;
+                if (attr1.specified && attr1.nodeValue !== attr2.nodeValue) return false;
+            }
+        }
+        return true;
+    }
+
+    function elementHasNonClassAttributes(el, exceptions) {
+        for (var i = 0, len = el.attributes.length, attrName; i < len; ++i) {
+            attrName = el.attributes[i].name;
+            if ( !(exceptions && dom.arrayContains(exceptions, attrName)) && el.attributes[i].specified && attrName != "class") {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    function elementHasProps(el, props) {
+        for (var p in props) {
+            if (props.hasOwnProperty(p) && el[p] !== props[p]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    var getComputedStyleProperty;
+
+    if (typeof window.getComputedStyle != "undefined") {
+        getComputedStyleProperty = function(el, propName) {
+            return dom.getWindow(el).getComputedStyle(el, null)[propName];
+        };
+    } else if (typeof document.documentElement.currentStyle != "undefined") {
+        getComputedStyleProperty = function(el, propName) {
+            return el.currentStyle[propName];
+        };
+    } else {
+        module.fail("No means of obtaining computed style properties found");
+    }
+
+    var isEditableElement;
+
+    (function() {
+        var testEl = document.createElement("div");
+        if (typeof testEl.isContentEditable == "boolean") {
+            isEditableElement = function(node) {
+                return node && node.nodeType == 1 && node.isContentEditable;
+            };
+        } else {
+            isEditableElement = function(node) {
+                if (!node || node.nodeType != 1 || node.contentEditable == "false") {
+                    return false;
+                }
+                return node.contentEditable == "true" || isEditableElement(node.parentNode);
+            };
+        }
+    })();
+
+    function isEditingHost(node) {
+        var parent;
+        return node && node.nodeType == 1
+            && (( (parent = node.parentNode) && parent.nodeType == 9 && parent.designMode == "on")
+            || (isEditableElement(node) && !isEditableElement(node.parentNode)));
+    }
+
+    function isEditable(node) {
+        return (isEditableElement(node) || (node.nodeType != 1 && isEditableElement(node.parentNode))) && !isEditingHost(node);
+    }
+
+    var inlineDisplayRegex = /^inline(-block|-table)?$/i;
+
+    function isNonInlineElement(node) {
+        return node && node.nodeType == 1 && !inlineDisplayRegex.test(getComputedStyleProperty(node, "display"));
+    }
+
+    // White space characters as defined by HTML 4 (http://www.w3.org/TR/html401/struct/text.html)
+    var htmlNonWhiteSpaceRegex = /[^\r\n\t\f \u200B]/;
+
+    function isUnrenderedWhiteSpaceNode(node) {
+        if (node.data.length == 0) {
+            return true;
+        }
+        if (htmlNonWhiteSpaceRegex.test(node.data)) {
+            return false;
+        }
+        var cssWhiteSpace = getComputedStyleProperty(node.parentNode, "whiteSpace");
+        switch (cssWhiteSpace) {
+            case "pre":
+            case "pre-wrap":
+            case "-moz-pre-wrap":
+                return false;
+            case "pre-line":
+                if (/[\r\n]/.test(node.data)) {
+                    return false;
+                }
+        }
+
+        // We now have a whitespace-only text node that may be rendered depending on its context. If it is adjacent to a
+        // non-inline element, it will not be rendered. This seems to be a good enough definition.
+        return isNonInlineElement(node.previousSibling) || isNonInlineElement(node.nextSibling);
+    }
+
+    function isSplitPoint(node, offset) {
+        if (dom.isCharacterDataNode(node)) {
+            if (offset == 0) {
+                return !!node.previousSibling;
+            } else if (offset == node.length) {
+                return !!node.nextSibling;
+            } else {
+                return true;
+            }
+        }
+
+        return offset > 0 && offset < node.childNodes.length;
+    }
+
+    function splitNodeAt(node, descendantNode, descendantOffset, rangesToPreserve) {
+        var newNode;
+        var splitAtStart = (descendantOffset == 0);
+
+        if (dom.isAncestorOf(descendantNode, node)) {
+
+            return node;
+        }
+
+        if (dom.isCharacterDataNode(descendantNode)) {
+            if (descendantOffset == 0) {
+                descendantOffset = dom.getNodeIndex(descendantNode);
+                descendantNode = descendantNode.parentNode;
+            } else if (descendantOffset == descendantNode.length) {
+                descendantOffset = dom.getNodeIndex(descendantNode) + 1;
+                descendantNode = descendantNode.parentNode;
+            } else {
+                throw module.createError("splitNodeAt should not be called with offset in the middle of a data node ("
+                    + descendantOffset + " in " + descendantNode.data);
+            }
+        }
+
+        if (isSplitPoint(descendantNode, descendantOffset)) {
+            if (!newNode) {
+                newNode = descendantNode.cloneNode(false);
+                if (newNode.id) {
+                    newNode.removeAttribute("id");
+                }
+                var child;
+                while ((child = descendantNode.childNodes[descendantOffset])) {
+                    newNode.appendChild(child);
+                }
+                dom.insertAfter(newNode, descendantNode);
+            }
+            return (descendantNode == node) ? newNode : splitNodeAt(node, newNode.parentNode, dom.getNodeIndex(newNode), rangesToPreserve);
+        } else if (node != descendantNode) {
+            newNode = descendantNode.parentNode;
+
+            // Work out a new split point in the parent node
+            var newNodeIndex = dom.getNodeIndex(descendantNode);
+
+            if (!splitAtStart) {
+                newNodeIndex++;
+            }
+            return splitNodeAt(node, newNode, newNodeIndex, rangesToPreserve);
+        }
+        return node;
+    }
+
+    function areElementsMergeable(el1, el2) {
+        return el1.tagName == el2.tagName && haveSameClasses(el1, el2) && elementsHaveSameNonClassAttributes(el1, el2);
+    }
+
+    function createAdjacentMergeableTextNodeGetter(forward) {
+        var propName = forward ? "nextSibling" : "previousSibling";
+
+        return function(textNode, checkParentElement) {
+            var el = textNode.parentNode;
+            var adjacentNode = textNode[propName];
+            if (adjacentNode) {
+                // Can merge if the node's previous/next sibling is a text node
+                if (adjacentNode && adjacentNode.nodeType == 3) {
+                    return adjacentNode;
+                }
+            } else if (checkParentElement) {
+                // Compare text node parent element with its sibling
+                adjacentNode = el[propName];
+
+                if (adjacentNode && adjacentNode.nodeType == 1 && areElementsMergeable(el, adjacentNode)) {
+                    return adjacentNode[forward ? "firstChild" : "lastChild"];
+                }
+            }
+            return null;
+        }
+    }
+
+    var getPreviousMergeableTextNode = createAdjacentMergeableTextNodeGetter(false),
+        getNextMergeableTextNode = createAdjacentMergeableTextNodeGetter(true);
+
+
+    function Merge(firstNode) {
+        this.isElementMerge = (firstNode.nodeType == 1);
+        this.firstTextNode = this.isElementMerge ? firstNode.lastChild : firstNode;
+        this.textNodes = [this.firstTextNode];
+    }
+
+    Merge.prototype = {
+        doMerge: function() {
+            var textBits = [], textNode, parent, text;
+            for (var i = 0, len = this.textNodes.length; i < len; ++i) {
+                textNode = this.textNodes[i];
+                parent = textNode.parentNode;
+                textBits[i] = textNode.data;
+                if (i) {
+                    parent.removeChild(textNode);
+                    if (!parent.hasChildNodes()) {
+                        parent.parentNode.removeChild(parent);
+                    }
+                }
+            }
+            this.firstTextNode.data = text = textBits.join("");
+            return text;
+        },
+
+        getLength: function() {
+            var i = this.textNodes.length, len = 0;
+            while (i--) {
+                len += this.textNodes[i].length;
+            }
+            return len;
+        },
+
+        toString: function() {
+            var textBits = [];
+            for (var i = 0, len = this.textNodes.length; i < len; ++i) {
+                textBits[i] = "'" + this.textNodes[i].data + "'";
+            }
+            return "[Merge(" + textBits.join(",") + ")]";
+        }
+    };
+
+    var optionProperties = ["elementTagName", "ignoreWhiteSpace", "applyToEditableOnly"];
+
+    // Allow "class" as a property name in object properties
+    var mappedPropertyNames = {"class" : "className"};
+
+    function CssClassApplier(cssClass, options, tagNames) {
+        this.cssClass = cssClass;
+        var normalize, i, len, propName;
+
+        var elementPropertiesFromOptions = null;
+
+        // Initialize from options object
+        if (typeof options == "object" && options !== null) {
+            tagNames = options.tagNames;
+            elementPropertiesFromOptions = options.elementProperties;
+
+            for (i = 0; propName = optionProperties[i++]; ) {
+                if (options.hasOwnProperty(propName)) {
+                    this[propName] = options[propName];
+                }
+            }
+            normalize = options.normalize;
+        } else {
+            normalize = options;
+        }
+
+        // Backwards compatibility: the second parameter can also be a Boolean indicating whether normalization
+        this.normalize = (typeof normalize == "undefined") ? true : normalize;
+
+        // Initialize element properties and attribute exceptions
+        this.attrExceptions = [];
+        var el = document.createElement(this.elementTagName);
+        this.elementProperties = {};
+        for (var p in elementPropertiesFromOptions) {
+            if (elementPropertiesFromOptions.hasOwnProperty(p)) {
+                // Map "class" to "className"
+                if (mappedPropertyNames.hasOwnProperty(p)) {
+                    p = mappedPropertyNames[p];
+                }
+                el[p] = elementPropertiesFromOptions[p];
+
+                // Copy the property back from the dummy element so that later comparisons to check whether elements
+                // may be removed are checking against the right value. For example, the href property of an element
+                // returns a fully qualified URL even if it was previously assigned a relative URL.
+                this.elementProperties[p] = el[p];
+                this.attrExceptions.push(p);
+            }
+        }
+
+        this.elementSortedClassName = this.elementProperties.hasOwnProperty("className") ?
+            sortClassName(this.elementProperties.className + " " + cssClass) : cssClass;
+
+        // Initialize tag names
+        this.applyToAnyTagName = false;
+        var type = typeof tagNames;
+        if (type == "string") {
+            if (tagNames == "*") {
+                this.applyToAnyTagName = true;
+            } else {
+                this.tagNames = trim(tagNames.toLowerCase()).split(/\s*,\s*/);
+            }
+        } else if (type == "object" && typeof tagNames.length == "number") {
+            this.tagNames = [];
+            for (i = 0, len = tagNames.length; i < len; ++i) {
+                if (tagNames[i] == "*") {
+                    this.applyToAnyTagName = true;
+                } else {
+                    this.tagNames.push(tagNames[i].toLowerCase());
+                }
+            }
+        } else {
+            this.tagNames = [this.elementTagName];
+        }
+    }
+
+    CssClassApplier.prototype = {
+        elementTagName: defaultTagName,
+        elementProperties: {},
+        ignoreWhiteSpace: true,
+        applyToEditableOnly: false,
+
+        hasClass: function(node) {
+            return node.nodeType == 1 && dom.arrayContains(this.tagNames, node.tagName.toLowerCase()) && hasClass(node, this.cssClass);
+        },
+
+        getSelfOrAncestorWithClass: function(node) {
+            while (node) {
+                if (this.hasClass(node, this.cssClass)) {
+                    return node;
+                }
+                node = node.parentNode;
+            }
+            return null;
+        },
+
+        isModifiable: function(node) {
+            return !this.applyToEditableOnly || isEditable(node);
+        },
+
+        // White space adjacent to an unwrappable node can be ignored for wrapping
+        isIgnorableWhiteSpaceNode: function(node) {
+            return this.ignoreWhiteSpace && node && node.nodeType == 3 && isUnrenderedWhiteSpaceNode(node);
+        },
+
+        // Normalizes nodes after applying a CSS class to a Range.
+        postApply: function(textNodes, range, isUndo) {
+
+            var firstNode = textNodes[0], lastNode = textNodes[textNodes.length - 1];
+
+            var merges = [], currentMerge;
+
+            var rangeStartNode = firstNode, rangeEndNode = lastNode;
+            var rangeStartOffset = 0, rangeEndOffset = lastNode.length;
+
+            var textNode, precedingTextNode;
+
+            for (var i = 0, len = textNodes.length; i < len; ++i) {
+                textNode = textNodes[i];
+                precedingTextNode = getPreviousMergeableTextNode(textNode, !isUndo);
+
+                if (precedingTextNode) {
+                    if (!currentMerge) {
+                        currentMerge = new Merge(precedingTextNode);
+                        merges.push(currentMerge);
+                    }
+                    currentMerge.textNodes.push(textNode);
+                    if (textNode === firstNode) {
+                        rangeStartNode = currentMerge.firstTextNode;
+                        rangeStartOffset = rangeStartNode.length;
+                    }
+                    if (textNode === lastNode) {
+                        rangeEndNode = currentMerge.firstTextNode;
+                        rangeEndOffset = currentMerge.getLength();
+                    }
+                } else {
+                    currentMerge = null;
+                }
+            }
+
+            // Test whether the first node after the range needs merging
+            var nextTextNode = getNextMergeableTextNode(lastNode, !isUndo);
+
+            if (nextTextNode) {
+                if (!currentMerge) {
+                    currentMerge = new Merge(lastNode);
+                    merges.push(currentMerge);
+                }
+                currentMerge.textNodes.push(nextTextNode);
+            }
+
+            // Do the merges
+            if (merges.length) {
+
+                for (i = 0, len = merges.length; i < len; ++i) {
+                    merges[i].doMerge();
+                }
+
+
+                // Set the range boundaries
+                range.setStart(rangeStartNode, rangeStartOffset);
+                range.setEnd(rangeEndNode, rangeEndOffset);
+            }
+
+        },
+
+        createContainer: function(doc) {
+            var el = doc.createElement(this.elementTagName);
+            api.util.extend(el, this.elementProperties);
+            addClass(el, this.cssClass);
+            return el;
+        },
+
+        applyToTextNode: function(textNode) {
+
+
+            var parent = textNode.parentNode;
+            if (parent.childNodes.length == 1 && dom.arrayContains(this.tagNames, parent.tagName.toLowerCase())) {
+                addClass(parent, this.cssClass);
+            } else {
+                var el = this.createContainer(dom.getDocument(textNode));
+                textNode.parentNode.insertBefore(el, textNode);
+                el.appendChild(textNode);
+            }
+
+        },
+
+        isRemovable: function(el) {
+            return el.tagName.toLowerCase() == this.elementTagName
+                    && getSortedClassName(el) == this.elementSortedClassName
+                    && elementHasProps(el, this.elementProperties)
+                    && !elementHasNonClassAttributes(el, this.attrExceptions)
+                    && this.isModifiable(el);
+        },
+
+        undoToTextNode: function(textNode, range, ancestorWithClass) {
+
+            if (!range.containsNode(ancestorWithClass)) {
+                // Split out the portion of the ancestor from which we can remove the CSS class
+                //var parent = ancestorWithClass.parentNode, index = dom.getNodeIndex(ancestorWithClass);
+                var ancestorRange = range.cloneRange();
+                ancestorRange.selectNode(ancestorWithClass);
+
+                if (ancestorRange.isPointInRange(range.endContainer, range.endOffset)/* && isSplitPoint(range.endContainer, range.endOffset)*/) {
+                    splitNodeAt(ancestorWithClass, range.endContainer, range.endOffset, [range]);
+                    range.setEndAfter(ancestorWithClass);
+                }
+                if (ancestorRange.isPointInRange(range.startContainer, range.startOffset)/* && isSplitPoint(range.startContainer, range.startOffset)*/) {
+                    ancestorWithClass = splitNodeAt(ancestorWithClass, range.startContainer, range.startOffset, [range]);
+                }
+            }
+
+            if (this.isRemovable(ancestorWithClass)) {
+                replaceWithOwnChildren(ancestorWithClass);
+            } else {
+                removeClass(ancestorWithClass, this.cssClass);
+            }
+        },
+
+        applyToRange: function(range) {
+            range.splitBoundaries();
+            var textNodes = getEffectiveTextNodes(range);
+
+            if (textNodes.length) {
+                var textNode;
+
+                for (var i = 0, len = textNodes.length; i < len; ++i) {
+                    textNode = textNodes[i];
+
+                    if (!this.isIgnorableWhiteSpaceNode(textNode) && !this.getSelfOrAncestorWithClass(textNode)
+                            && this.isModifiable(textNode)) {
+                        this.applyToTextNode(textNode);
+                    }
+                }
+                range.setStart(textNodes[0], 0);
+                textNode = textNodes[textNodes.length - 1];
+                range.setEnd(textNode, textNode.length);
+                if (this.normalize) {
+                    this.postApply(textNodes, range, false);
+                }
+            }
+        },
+
+        applyToSelection: function(win) {
+
+            win = win || window;
+            var sel = api.getSelection(win);
+
+            var range, ranges = sel.getAllRanges();
+            sel.removeAllRanges();
+            var i = ranges.length;
+            while (i--) {
+                range = ranges[i];
+                this.applyToRange(range);
+                sel.addRange(range);
+            }
+
+        },
+
+        undoToRange: function(range) {
+
+            range.splitBoundaries();
+            var textNodes = getEffectiveTextNodes(range);
+            var textNode, ancestorWithClass;
+            var lastTextNode = textNodes[textNodes.length - 1];
+
+            if (textNodes.length) {
+                for (var i = 0, len = textNodes.length; i < len; ++i) {
+                    textNode = textNodes[i];
+                    ancestorWithClass = this.getSelfOrAncestorWithClass(textNode);
+                    if (ancestorWithClass && this.isModifiable(textNode)) {
+                        this.undoToTextNode(textNode, range, ancestorWithClass);
+                    }
+
+                    // Ensure the range is still valid
+                    range.setStart(textNodes[0], 0);
+                    range.setEnd(lastTextNode, lastTextNode.length);
+                }
+
+
+
+                if (this.normalize) {
+                    this.postApply(textNodes, range, true);
+                }
+            }
+        },
+
+        undoToSelection: function(win) {
+            win = win || window;
+            var sel = api.getSelection(win);
+            var ranges = sel.getAllRanges(), range;
+            sel.removeAllRanges();
+            for (var i = 0, len = ranges.length; i < len; ++i) {
+                range = ranges[i];
+                this.undoToRange(range);
+                sel.addRange(range);
+            }
+        },
+
+        getTextSelectedByRange: function(textNode, range) {
+            var textRange = range.cloneRange();
+            textRange.selectNodeContents(textNode);
+
+            var intersectionRange = textRange.intersection(range);
+            var text = intersectionRange ? intersectionRange.toString() : "";
+            textRange.detach();
+
+            return text;
+        },
+
+        isAppliedToRange: function(range) {
+            if (range.collapsed) {
+                return !!this.getSelfOrAncestorWithClass(range.commonAncestorContainer);
+            } else {
+                var textNodes = range.getNodes( [3] );
+                for (var i = 0, textNode; textNode = textNodes[i++]; ) {
+                    if (!this.isIgnorableWhiteSpaceNode(textNode) && rangeSelectsAnyText(range, textNode)
+                            && this.isModifiable(textNode) && !this.getSelfOrAncestorWithClass(textNode)) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+        },
+
+        isAppliedToSelection: function(win) {
+            win = win || window;
+            var sel = api.getSelection(win);
+            var ranges = sel.getAllRanges();
+            var i = ranges.length;
+            while (i--) {
+                if (!this.isAppliedToRange(ranges[i])) {
+                    return false;
+                }
+            }
+
+            return true;
+        },
+
+        toggleRange: function(range) {
+            if (this.isAppliedToRange(range)) {
+                this.undoToRange(range);
+            } else {
+                this.applyToRange(range);
+            }
+        },
+
+        toggleSelection: function(win) {
+            if (this.isAppliedToSelection(win)) {
+                this.undoToSelection(win);
+            } else {
+                this.applyToSelection(win);
+            }
+        },
+
+        detach: function() {}
+    };
+
+    function createCssClassApplier(cssClass, options, tagNames) {
+        return new CssClassApplier(cssClass, options, tagNames);
+    }
+
+    CssClassApplier.util = {
+        hasClass: hasClass,
+        addClass: addClass,
+        removeClass: removeClass,
+        hasSameClasses: haveSameClasses,
+        replaceWithOwnChildren: replaceWithOwnChildren,
+        elementsHaveSameNonClassAttributes: elementsHaveSameNonClassAttributes,
+        elementHasNonClassAttributes: elementHasNonClassAttributes,
+        splitNodeAt: splitNodeAt,
+        isEditableElement: isEditableElement,
+        isEditingHost: isEditingHost,
+        isEditable: isEditable
+    };
+
+    api.CssClassApplier = CssClassApplier;
+    api.createCssClassApplier = createCssClassApplier;
+});
diff --git a/lib/editor/atto/yui/src/rangy/js/rangy-selectionsaverestore.js b/lib/editor/atto/yui/src/rangy/js/rangy-selectionsaverestore.js
new file mode 100644
index 00000000000..ac200390e0b
--- /dev/null
+++ b/lib/editor/atto/yui/src/rangy/js/rangy-selectionsaverestore.js
@@ -0,0 +1,195 @@
+/**
+ * @license Selection save and restore module for Rangy.
+ * Saves and restores user selections using marker invisible elements in the DOM.
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("SaveRestore", function(api, module) {
+    api.requireModules( ["DomUtil", "DomRange", "WrappedRange"] );
+
+    var dom = api.dom;
+
+    var markerTextChar = "\ufeff";
+
+    function gEBI(id, doc) {
+        return (doc || document).getElementById(id);
+    }
+
+    function insertRangeBoundaryMarker(range, atStart) {
+        var markerId = "selectionBoundary_" + (+new Date()) + "_" + ("" + Math.random()).slice(2);
+        var markerEl;
+        var doc = dom.getDocument(range.startContainer);
+
+        // Clone the Range and collapse to the appropriate boundary point
+        var boundaryRange = range.cloneRange();
+        boundaryRange.collapse(atStart);
+
+        // Create the marker element containing a single invisible character using DOM methods and insert it
+        markerEl = doc.createElement("span");
+        markerEl.id = markerId;
+        markerEl.style.lineHeight = "0";
+        markerEl.style.display = "none";
+        markerEl.className = "rangySelectionBoundary";
+        markerEl.appendChild(doc.createTextNode(markerTextChar));
+
+        boundaryRange.insertNode(markerEl);
+        boundaryRange.detach();
+        return markerEl;
+    }
+
+    function setRangeBoundary(doc, range, markerId, atStart) {
+        var markerEl = gEBI(markerId, doc);
+        if (markerEl) {
+            range[atStart ? "setStartBefore" : "setEndBefore"](markerEl);
+            markerEl.parentNode.removeChild(markerEl);
+        } else {
+            module.warn("Marker element has been removed. Cannot restore selection.");
+        }
+    }
+
+    function compareRanges(r1, r2) {
+        return r2.compareBoundaryPoints(r1.START_TO_START, r1);
+    }
+
+    function saveSelection(win) {
+        win = win || window;
+        var doc = win.document;
+        if (!api.isSelectionValid(win)) {
+            module.warn("Cannot save selection. This usually happens when the selection is collapsed and the selection document has lost focus.");
+            return;
+        }
+        var sel = api.getSelection(win);
+        var ranges = sel.getAllRanges();
+        var rangeInfos = [], startEl, endEl, range;
+
+        // Order the ranges by position within the DOM, latest first
+        ranges.sort(compareRanges);
+
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            range = ranges[i];
+            if (range.collapsed) {
+                endEl = insertRangeBoundaryMarker(range, false);
+                rangeInfos.push({
+                    markerId: endEl.id,
+                    collapsed: true
+                });
+            } else {
+                endEl = insertRangeBoundaryMarker(range, false);
+                startEl = insertRangeBoundaryMarker(range, true);
+
+                rangeInfos[i] = {
+                    startMarkerId: startEl.id,
+                    endMarkerId: endEl.id,
+                    collapsed: false,
+                    backwards: ranges.length == 1 && sel.isBackwards()
+                };
+            }
+        }
+
+        // Now that all the markers are in place and DOM manipulation over, adjust each range's boundaries to lie
+        // between its markers
+        for (i = len - 1; i >= 0; --i) {
+            range = ranges[i];
+            if (range.collapsed) {
+                range.collapseBefore(gEBI(rangeInfos[i].markerId, doc));
+            } else {
+                range.setEndBefore(gEBI(rangeInfos[i].endMarkerId, doc));
+                range.setStartAfter(gEBI(rangeInfos[i].startMarkerId, doc));
+            }
+        }
+
+        // Ensure current selection is unaffected
+        sel.setRanges(ranges);
+        return {
+            win: win,
+            doc: doc,
+            rangeInfos: rangeInfos,
+            restored: false
+        };
+    }
+
+    function restoreSelection(savedSelection, preserveDirection) {
+        if (!savedSelection.restored) {
+            var rangeInfos = savedSelection.rangeInfos;
+            var sel = api.getSelection(savedSelection.win);
+            var ranges = [];
+
+            // Ranges are in reverse order of appearance in the DOM. We want to restore earliest first to avoid
+            // normalization affecting previously restored ranges.
+            for (var len = rangeInfos.length, i = len - 1, rangeInfo, range; i >= 0; --i) {
+                rangeInfo = rangeInfos[i];
+                range = api.createRange(savedSelection.doc);
+                if (rangeInfo.collapsed) {
+                    var markerEl = gEBI(rangeInfo.markerId, savedSelection.doc);
+                    if (markerEl) {
+                        markerEl.style.display = "inline";
+                        var previousNode = markerEl.previousSibling;
+
+                        // Workaround for issue 17
+                        if (previousNode && previousNode.nodeType == 3) {
+                            markerEl.parentNode.removeChild(markerEl);
+                            range.collapseToPoint(previousNode, previousNode.length);
+                        } else {
+                            range.collapseBefore(markerEl);
+                            markerEl.parentNode.removeChild(markerEl);
+                        }
+                    } else {
+                        module.warn("Marker element has been removed. Cannot restore selection.");
+                    }
+                } else {
+                    setRangeBoundary(savedSelection.doc, range, rangeInfo.startMarkerId, true);
+                    setRangeBoundary(savedSelection.doc, range, rangeInfo.endMarkerId, false);
+                }
+
+                // Normalizing range boundaries is only viable if the selection contains only one range. For example,
+                // if the selection contained two ranges that were both contained within the same single text node,
+                // both would alter the same text node when restoring and break the other range.
+                if (len == 1) {
+                    range.normalizeBoundaries();
+                }
+                ranges[i] = range;
+            }
+            if (len == 1 && preserveDirection && api.features.selectionHasExtend && rangeInfos[0].backwards) {
+                sel.removeAllRanges();
+                sel.addRange(ranges[0], true);
+            } else {
+                sel.setRanges(ranges);
+            }
+
+            savedSelection.restored = true;
+        }
+    }
+
+    function removeMarkerElement(doc, markerId) {
+        var markerEl = gEBI(markerId, doc);
+        if (markerEl) {
+            markerEl.parentNode.removeChild(markerEl);
+        }
+    }
+
+    function removeMarkers(savedSelection) {
+        var rangeInfos = savedSelection.rangeInfos;
+        for (var i = 0, len = rangeInfos.length, rangeInfo; i < len; ++i) {
+            rangeInfo = rangeInfos[i];
+            if (rangeInfo.collapsed) {
+                removeMarkerElement(savedSelection.doc, rangeInfo.markerId);
+            } else {
+                removeMarkerElement(savedSelection.doc, rangeInfo.startMarkerId);
+                removeMarkerElement(savedSelection.doc, rangeInfo.endMarkerId);
+            }
+        }
+    }
+
+    api.saveSelection = saveSelection;
+    api.restoreSelection = restoreSelection;
+    api.removeMarkerElement = removeMarkerElement;
+    api.removeMarkers = removeMarkers;
+});
diff --git a/lib/editor/atto/yui/src/rangy/js/rangy-serializer.js b/lib/editor/atto/yui/src/rangy/js/rangy-serializer.js
new file mode 100644
index 00000000000..79edc13060e
--- /dev/null
+++ b/lib/editor/atto/yui/src/rangy/js/rangy-serializer.js
@@ -0,0 +1,300 @@
+/**
+ * @license Serializer module for Rangy.
+ * Serializes Ranges and Selections. An example use would be to store a user's selection on a particular page in a
+ * cookie or local storage and restore it on the user's next visit to the same page.
+ *
+ * Part of Rangy, a cross-browser JavaScript range and selection library
+ * http://code.google.com/p/rangy/
+ *
+ * Depends on Rangy core.
+ *
+ * Copyright 2012, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.2.3
+ * Build date: 26 February 2012
+ */
+rangy.createModule("Serializer", function(api, module) {
+    api.requireModules( ["WrappedSelection", "WrappedRange"] );
+    var UNDEF = "undefined";
+
+    // encodeURIComponent and decodeURIComponent are required for cookie handling
+    if (typeof encodeURIComponent == UNDEF || typeof decodeURIComponent == UNDEF) {
+        module.fail("Global object is missing encodeURIComponent and/or decodeURIComponent method");
+    }
+
+    // Checksum for checking whether range can be serialized
+    var crc32 = (function() {
+        function utf8encode(str) {
+            var utf8CharCodes = [];
+
+            for (var i = 0, len = str.length, c; i < len; ++i) {
+                c = str.charCodeAt(i);
+                if (c < 128) {
+                    utf8CharCodes.push(c);
+                } else if (c < 2048) {
+                    utf8CharCodes.push((c >> 6) | 192, (c & 63) | 128);
+                } else {
+                    utf8CharCodes.push((c >> 12) | 224, ((c >> 6) & 63) | 128, (c & 63) | 128);
+                }
+            }
+            return utf8CharCodes;
+        }
+
+        var cachedCrcTable = null;
+
+        function buildCRCTable() {
+            var table = [];
+            for (var i = 0, j, crc; i < 256; ++i) {
+                crc = i;
+                j = 8;
+                while (j--) {
+                    if ((crc & 1) == 1) {
+                        crc = (crc >>> 1) ^ 0xEDB88320;
+                    } else {
+                        crc >>>= 1;
+                    }
+                }
+                table[i] = crc >>> 0;
+            }
+            return table;
+        }
+
+        function getCrcTable() {
+            if (!cachedCrcTable) {
+                cachedCrcTable = buildCRCTable();
+            }
+            return cachedCrcTable;
+        }
+
+        return function(str) {
+            var utf8CharCodes = utf8encode(str), crc = -1, crcTable = getCrcTable();
+            for (var i = 0, len = utf8CharCodes.length, y; i < len; ++i) {
+                y = (crc ^ utf8CharCodes[i]) & 0xFF;
+                crc = (crc >>> 8) ^ crcTable[y];
+            }
+            return (crc ^ -1) >>> 0;
+        };
+    })();
+
+    var dom = api.dom;
+
+    function escapeTextForHtml(str) {
+        return str.replace(/</g, "&lt;").replace(/>/g, "&gt;");
+    }
+
+    function nodeToInfoString(node, infoParts) {
+        infoParts = infoParts || [];
+        var nodeType = node.nodeType, children = node.childNodes, childCount = children.length;
+        var nodeInfo = [nodeType, node.nodeName, childCount].join(":");
+        var start = "", end = "";
+        switch (nodeType) {
+            case 3: // Text node
+                start = escapeTextForHtml(node.nodeValue);
+                break;
+            case 8: // Comment
+                start = "<!--" + escapeTextForHtml(node.nodeValue) + "-->";
+                break;
+            default:
+                start = "<" + nodeInfo + ">";
+                end = "</>";
+                break;
+        }
+        if (start) {
+            infoParts.push(start);
+        }
+        for (var i = 0; i < childCount; ++i) {
+            nodeToInfoString(children[i], infoParts);
+        }
+        if (end) {
+            infoParts.push(end);
+        }
+        return infoParts;
+    }
+
+    // Creates a string representation of the specified element's contents that is similar to innerHTML but omits all
+    // attributes and comments and includes child node counts. This is done instead of using innerHTML to work around
+    // IE <= 8's policy of including element properties in attributes, which ruins things by changing an element's
+    // innerHTML whenever the user changes an input within the element.
+    function getElementChecksum(el) {
+        var info = nodeToInfoString(el).join("");
+        return crc32(info).toString(16);
+    }
+
+    function serializePosition(node, offset, rootNode) {
+        var pathBits = [], n = node;
+        rootNode = rootNode || dom.getDocument(node).documentElement;
+        while (n && n != rootNode) {
+            pathBits.push(dom.getNodeIndex(n, true));
+            n = n.parentNode;
+        }
+        return pathBits.join("/") + ":" + offset;
+    }
+
+    function deserializePosition(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var bits = serialized.split(":");
+        var node = rootNode;
+        var nodeIndices = bits[0] ? bits[0].split("/") : [], i = nodeIndices.length, nodeIndex;
+
+        while (i--) {
+            nodeIndex = parseInt(nodeIndices[i], 10);
+            if (nodeIndex < node.childNodes.length) {
+                node = node.childNodes[parseInt(nodeIndices[i], 10)];
+            } else {
+                throw module.createError("deserializePosition failed: node " + dom.inspectNode(node) +
+                        " has no child with index " + nodeIndex + ", " + i);
+            }
+        }
+
+        return new dom.DomPosition(node, parseInt(bits[1], 10));
+    }
+
+    function serializeRange(range, omitChecksum, rootNode) {
+        rootNode = rootNode || api.DomRange.getRangeDocument(range).documentElement;
+        if (!dom.isAncestorOf(rootNode, range.commonAncestorContainer, true)) {
+            throw new Error("serializeRange: range is not wholly contained within specified root node");
+        }
+        var serialized = serializePosition(range.startContainer, range.startOffset, rootNode) + "," +
+            serializePosition(range.endContainer, range.endOffset, rootNode);
+        if (!omitChecksum) {
+            serialized += "{" + getElementChecksum(rootNode) + "}";
+        }
+        return serialized;
+    }
+
+    function deserializeRange(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var result = /^([^,]+),([^,\{]+)({([^}]+)})?$/.exec(serialized);
+        var checksum = result[4], rootNodeChecksum = getElementChecksum(rootNode);
+        if (checksum && checksum !== getElementChecksum(rootNode)) {
+            throw new Error("deserializeRange: checksums of serialized range root node (" + checksum +
+                    ") and target root node (" + rootNodeChecksum + ") do not match");
+        }
+        var start = deserializePosition(result[1], rootNode, doc), end = deserializePosition(result[2], rootNode, doc);
+        var range = api.createRange(doc);
+        range.setStart(start.node, start.offset);
+        range.setEnd(end.node, end.offset);
+        return range;
+    }
+
+    function canDeserializeRange(serialized, rootNode, doc) {
+        if (rootNode) {
+            doc = doc || dom.getDocument(rootNode);
+        } else {
+            doc = doc || document;
+            rootNode = doc.documentElement;
+        }
+        var result = /^([^,]+),([^,]+)({([^}]+)})?$/.exec(serialized);
+        var checksum = result[3];
+        return !checksum || checksum === getElementChecksum(rootNode);
+    }
+
+    function serializeSelection(selection, omitChecksum, rootNode) {
+        selection = selection || api.getSelection();
+        var ranges = selection.getAllRanges(), serializedRanges = [];
+        for (var i = 0, len = ranges.length; i < len; ++i) {
+            serializedRanges[i] = serializeRange(ranges[i], omitChecksum, rootNode);
+        }
+        return serializedRanges.join("|");
+    }
+
+    function deserializeSelection(serialized, rootNode, win) {
+        if (rootNode) {
+            win = win || dom.getWindow(rootNode);
+        } else {
+            win = win || window;
+            rootNode = win.document.documentElement;
+        }
+        var serializedRanges = serialized.split("|");
+        var sel = api.getSelection(win);
+        var ranges = [];
+
+        for (var i = 0, len = serializedRanges.length; i < len; ++i) {
+            ranges[i] = deserializeRange(serializedRanges[i], rootNode, win.document);
+        }
+        sel.setRanges(ranges);
+
+        return sel;
+    }
+
+    function canDeserializeSelection(serialized, rootNode, win) {
+        var doc;
+        if (rootNode) {
+            doc = win ? win.document : dom.getDocument(rootNode);
+        } else {
+            win = win || window;
+            rootNode = win.document.documentElement;
+        }
+        var serializedRanges = serialized.split("|");
+
+        for (var i = 0, len = serializedRanges.length; i < len; ++i) {
+            if (!canDeserializeRange(serializedRanges[i], rootNode, doc)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+
+    var cookieName = "rangySerializedSelection";
+
+    function getSerializedSelectionFromCookie(cookie) {
+        var parts = cookie.split(/[;,]/);
+        for (var i = 0, len = parts.length, nameVal, val; i < len; ++i) {
+            nameVal = parts[i].split("=");
+            if (nameVal[0].replace(/^\s+/, "") == cookieName) {
+                val = nameVal[1];
+                if (val) {
+                    return decodeURIComponent(val.replace(/\s+$/, ""));
+                }
+            }
+        }
+        return null;
+    }
+
+    function restoreSelectionFromCookie(win) {
+        win = win || window;
+        var serialized = getSerializedSelectionFromCookie(win.document.cookie);
+        if (serialized) {
+            deserializeSelection(serialized, win.doc)
+        }
+    }
+
+    function saveSelectionCookie(win, props) {
+        win = win || window;
+        props = (typeof props == "object") ? props : {};
+        var expires = props.expires ? ";expires=" + props.expires.toUTCString() : "";
+        var path = props.path ? ";path=" + props.path : "";
+        var domain = props.domain ? ";domain=" + props.domain : "";
+        var secure = props.secure ? ";secure" : "";
+        var serialized = serializeSelection(api.getSelection(win));
+        win.document.cookie = encodeURIComponent(cookieName) + "=" + encodeURIComponent(serialized) + expires + path + domain + secure;
+    }
+
+    api.serializePosition = serializePosition;
+    api.deserializePosition = deserializePosition;
+
+    api.serializeRange = serializeRange;
+    api.deserializeRange = deserializeRange;
+    api.canDeserializeRange = canDeserializeRange;
+
+    api.serializeSelection = serializeSelection;
+    api.deserializeSelection = deserializeSelection;
+    api.canDeserializeSelection = canDeserializeSelection;
+
+    api.restoreSelectionFromCookie = restoreSelectionFromCookie;
+    api.saveSelectionCookie = saveSelectionCookie;
+
+    api.getElementChecksum = getElementChecksum;
+});
diff --git a/lib/editor/atto/yui/src/rangy/meta/rangy.json b/lib/editor/atto/yui/src/rangy/meta/rangy.json
new file mode 100644
index 00000000000..dd0439ef596
--- /dev/null
+++ b/lib/editor/atto/yui/src/rangy/meta/rangy.json
@@ -0,0 +1,5 @@
+{
+  "moodle-editor_atto-rangy": {
+    "requires": [ ]
+  }
+}