diff --git a/lib/csshover.htc b/lib/csshover.htc
deleted file mode 100644
index f00536d491f..00000000000
--- a/lib/csshover.htc
+++ /dev/null
@@ -1,89 +0,0 @@
-<attach event="ondocumentready" handler="parseStylesheets" />
-<script type="text/javascript">
-/**
- *	Pseudos - V1.30.050121 - hover & active
- *	---------------------------------------------
- *	Peterned - http://www.xs4all.nl/~peterned/
- *	(c) 2005 - Peter Nederlof
- *
- *	Credits  - Arnoud Berendsen 
- *	         - Martin Reurings
- *           - Robert Hanson
- *
- *	howto: body { behavior:url("csshover.htc"); }
- *	---------------------------------------------
- */
-
-var currentSheet, doc = window.document, activators = {
-	onhover:{on:'onmouseover', off:'onmouseout'},
-	onactive:{on:'onmousedown', off:'onmouseup'}
-}
-
-function parseStylesheets() {
-	var sheets = doc.styleSheets, l = sheets.length;
-	for(var i=0; i<l; i++) 
-		parseStylesheet(sheets[i]);
-}
-	function parseStylesheet(sheet) {
-		if(sheet.imports) {
-			try {
-				var imports = sheet.imports, l = imports.length;
-				for(var i=0; i<l; i++) parseStylesheet(sheet.imports[i]);
-			} catch(securityException){}
-		}
-
-		try {
-			var rules = (currentSheet = sheet).rules, l = rules.length;
-			for(var j=0; j<l; j++) parseCSSRule(rules[j]);
-		} catch(securityException){}
-	}
-
-	function parseCSSRule(rule) {
-		var select = rule.selectorText, style = rule.style.cssText;
-		if(!(/(^|\s)(([^a]([^ ]+)?)|(a([^#.][^ ]+)+)):(hover|active)/i).test(select) || !style) return;
-		
-		var pseudo = select.replace(/[^:]+:([a-z-]+).*/i, 'on$1');
-		var newSelect = select.replace(/(\.([a-z0-9_-]+):[a-z]+)|(:[a-z]+)/gi, '.$2' + pseudo);
-		var className = (/\.([a-z0-9_-]*on(hover|active))/i).exec(newSelect)[1];
-		var affected = select.replace(/:hover.*$/, '');
-		var elements = getElementsBySelect(affected);
-
-		currentSheet.addRule(newSelect, style);
-		for(var i=0; i<elements.length; i++)
-			new HoverElement(elements[i], className, activators[pseudo]);
-	}
-
-function HoverElement(node, className, events) {
-	if(!node.hovers) node.hovers = {};
-	if(node.hovers[className]) return;
-	node.hovers[className] = true;
-	node.attachEvent(events.on,
-		function() { node.className += ' ' + className; });
-	node.attachEvent(events.off,
-		function() { node.className = 
-			node.className.replace(new RegExp('\\s+'+className, 'g'),''); });
-}
-
-function getElementsBySelect(rule) {
-	var parts, nodes = [doc];
-	parts = rule.split(' ');
-	for(var i=0; i<parts.length; i++) {
-		nodes = getSelectedNodes(parts[i], nodes);
-	}	return nodes;
-}
-	function getSelectedNodes(select, elements) {
-		var result, node, nodes = [];
-		var classname = (/\.([a-z0-9_-]+)/i).exec(select);
-		var identify = (/\#([a-z0-9_-]+)/i).exec(select);
-		var tagName = select.replace(/(\.|\#|\:)[a-z0-9_-]+/i, '');
-		for(var i=0; i<elements.length; i++) {
-			result = tagName? elements[i].all.tags(tagName):elements[i].all; 
-			for(var j=0; j<result.length; j++) {
-				node = result[j];
-				if((identify && node.id != identify[1]) || (classname && !(new RegExp('\\b' +
-					classname[1] + '\\b').exec(node.className)))) continue;
-				nodes[nodes.length] = node;
-			}
-		}	return nodes;
-	}
-</script>
\ No newline at end of file