diff --git a/auth/ldap/auth.php b/auth/ldap/auth.php
index 1bad153ff03..a435caaa1b1 100644
--- a/auth/ldap/auth.php
+++ b/auth/ldap/auth.php
@@ -1645,7 +1645,7 @@ class auth_plugin_ldap extends auth_plugin_base {
             // Now start the whole NTLM machinery.
             if($this->config->ntlmsso_ie_fastpath == AUTH_NTLM_FASTPATH_YESATTEMPT ||
                 $this->config->ntlmsso_ie_fastpath == AUTH_NTLM_FASTPATH_YESFORM) {
-                if (core_useragent::check_ie_version()) {
+                if (core_useragent::is_ie()) {
                     $sesskey = sesskey();
                     redirect($CFG->wwwroot.'/auth/ldap/ntlmsso_magic.php?sesskey='.$sesskey);
                 } else if ($this->config->ntlmsso_ie_fastpath == AUTH_NTLM_FASTPATH_YESFORM) {
diff --git a/auth/ldap/ntlmsso_magic.php b/auth/ldap/ntlmsso_magic.php
index 2ac49a3022b..37228c18f6b 100644
--- a/auth/ldap/ntlmsso_magic.php
+++ b/auth/ldap/ntlmsso_magic.php
@@ -28,7 +28,7 @@ $file = $CFG->dirroot.'/pix/spacer.gif';
 
 if ($authplugin->ntlmsso_magic($sesskey) && file_exists($file)) {
     if (!empty($authplugin->config->ntlmsso_ie_fastpath)) {
-        if (core_useragent::check_ie_version()) {
+        if (core_useragent::is_ie()) {
             // $PAGE->https_required() up above takes care of what $CFG->httpswwwroot should be.
             redirect($CFG->httpswwwroot.'/auth/ldap/ntlmsso_finish.php');
         }
diff --git a/grade/report/grader/lib.php b/grade/report/grader/lib.php
index d4804fc9a2f..a6dcf42e396 100644
--- a/grade/report/grader/lib.php
+++ b/grade/report/grader/lib.php
@@ -1585,14 +1585,8 @@ class grade_report_grader extends grade_report {
      */
     public function is_fixed_students() {
         global $CFG;
-        return $CFG->grade_report_fixedstudents &&
-            (core_useragent::check_ie_version('7.0') ||
-             core_useragent::check_firefox_version('2.0') ||
-             core_useragent::check_gecko_version('2006010100') ||
-             core_useragent::check_camino_version('1.0') ||
-             core_useragent::check_opera_version('6.0') ||
-             core_useragent::check_chrome_version('6') ||
-             core_useragent::check_safari_version('300'));
+
+        return $CFG->grade_report_fixedstudents;
     }
 
     /**
diff --git a/lib/ajax/ajaxlib.php b/lib/ajax/ajaxlib.php
index daa31266e4f..c57e6c04014 100644
--- a/lib/ajax/ajaxlib.php
+++ b/lib/ajax/ajaxlib.php
@@ -61,19 +61,6 @@ function ajaxenabled(array $browsers = null) {
         }
     }
 
-    $ie = core_useragent::check_browser_version('MSIE', 6.0);
-    $ff = core_useragent::check_browser_version('Gecko', 20051106);
-    $op = core_useragent::check_browser_version('Opera', 9.0);
-    $sa = core_useragent::check_browser_version('Safari', 412);
-    $ch = core_useragent::check_browser_version('Chrome', 6);
-
-    if (!$ie && !$ff && !$op && !$sa && !$ch) {
-        /** @see http://en.wikipedia.org/wiki/User_agent */
-        // Gecko build 20051107 is what is in Firefox 1.5.
-        // We still have issues with AJAX in other browsers.
-        return false;
-    }
-
     if (!empty($CFG->enableajax)) {
         return true;
     } else {
diff --git a/lib/classes/useragent.php b/lib/classes/useragent.php
index e8c1906b260..971d1388ee1 100644
--- a/lib/classes/useragent.php
+++ b/lib/classes/useragent.php
@@ -367,6 +367,15 @@ class core_useragent {
         return false;
     }
 
+    /**
+     * Checks the user agent is Firefox (of any version).
+     *
+     * @return bool true if firefox
+     */
+    public static function is_firefox() {
+        return self::check_firefox_version();
+    }
+
     /**
      * Checks the user agent is Firefox based and that the version is equal to or greater than that specified.
      *
@@ -393,6 +402,15 @@ class core_useragent {
         return false;
     }
 
+    /**
+     * Checks the user agent is Gecko based (of any version).
+     *
+     * @return bool true if Gecko based.
+     */
+    public static function is_gecko() {
+        return self::check_gecko_version();
+    }
+
     /**
      * Checks the user agent is Gecko based and that the version is equal to or greater than that specified.
      *
@@ -447,6 +465,15 @@ class core_useragent {
         return false;
     }
 
+    /**
+     * Checks the user agent is IE (of any version).
+     *
+     * @return bool true if internet exporeer
+     */
+    public static function is_ie() {
+        return self::check_ie_version();
+    }
+
     /**
      * Checks the user agent is IE and that the version is equal to or greater than that specified.
      *
@@ -484,6 +511,15 @@ class core_useragent {
         return ($browser >= $version);
     }
 
+    /**
+     * Checks the user agent is Opera (of any version).
+     *
+     * @return bool true if opera
+     */
+    public static function is_opera() {
+        return self::check_opera_version();
+    }
+
     /**
      * Checks the user agent is Opera and that the version is equal to or greater than that specified.
      *
@@ -517,6 +553,15 @@ class core_useragent {
         return false;
     }
 
+    /**
+     * Checks the user agent is webkit based
+     *
+     * @return bool true if webkit
+     */
+    public static function is_webkit() {
+        return self::check_webkit_version();
+    }
+
     /**
      * Checks the user agent is Webkit based and that the version is equal to or greater than that specified.
      *
@@ -543,6 +588,15 @@ class core_useragent {
         return false;
     }
 
+    /**
+     * Checks the user agent is Safari
+     *
+     * @return bool true if safari
+     */
+    public static function is_safari() {
+        return self::check_safari_version();
+    }
+
     /**
      * Checks the user agent is Safari based and that the version is equal to or greater than that specified.
      *
@@ -594,6 +648,15 @@ class core_useragent {
         return false;
     }
 
+    /**
+     * Checks the user agent is Chrome
+     *
+     * @return bool true if chrome
+     */
+    public static function is_chrome() {
+        return self::check_chrome_version();
+    }
+
     /**
      * Checks the user agent is Chrome based and that the version is equal to or greater than that specified.
      *
@@ -620,6 +683,15 @@ class core_useragent {
         return false;
     }
 
+    /**
+     * Checks the user agent is webkit android based.
+     *
+     * @return bool true if webkit based and on Android
+     */
+    public static function is_webkit_android() {
+        return self::check_webkit_android_version();
+    }
+
     /**
      * Checks the user agent is Webkit based and on Android and that the version is equal to or greater than that specified.
      *
@@ -646,6 +718,15 @@ class core_useragent {
         return false;
     }
 
+    /**
+     * Checks the user agent is Safari on iOS
+     *
+     * @return bool true if Safari on iOS
+     */
+    public static function is_safari_ios() {
+        return self::check_safari_ios_version();
+    }
+
     /**
      * Checks the user agent is Safari on iOS and that the version is equal to or greater than that specified.
      *
@@ -694,7 +775,7 @@ class core_useragent {
      */
     public static function get_browser_version_classes() {
         $classes = array();
-        if (self::check_ie_version('0')) {
+        if (self::is_ie()) {
             $classes[] = 'ie';
             for ($i = 12; $i >= 6; $i--) {
                 if (self::check_ie_version($i)) {
@@ -702,19 +783,19 @@ class core_useragent {
                     break;
                 }
             }
-        } else if (self::check_firefox_version() || self::check_gecko_version() || self::check_camino_version()) {
+        } else if (self::is_firefox() || self::is_gecko() || self::check_camino_version()) {
             $classes[] = 'gecko';
             if (preg_match('/rv\:([1-2])\.([0-9])/', self::get_user_agent_string(), $matches)) {
                 $classes[] = "gecko{$matches[1]}{$matches[2]}";
             }
-        } else if (self::check_webkit_version()) {
+        } else if (self::is_webkit()) {
             $classes[] = 'safari';
-            if (self::check_safari_ios_version()) {
+            if (self::is_safari_ios()) {
                 $classes[] = 'ios';
-            } else if (self::check_webkit_android_version()) {
+            } else if (self::is_webkit_android()) {
                 $classes[] = 'android';
             }
-        } else if (self::check_opera_version()) {
+        } else if (self::is_opera()) {
             $classes[] = 'opera';
         }
         return $classes;
@@ -732,13 +813,13 @@ class core_useragent {
             if ($instance->useragent === false) {
                 // Can't be sure, just say no.
                 $instance->supportssvg = false;
-            } else if (self::check_ie_version() and !self::check_ie_version('9')) {
+            } else if (self::is_ie() and !self::check_ie_version('9')) {
                 // IE < 9 doesn't support SVG. Say no.
                 $instance->supportssvg = false;
             } else if (preg_match('#Android +[0-2]\.#', $instance->useragent)) {
                 // Android < 3 doesn't support SVG. Say no.
                 $instance->supportssvg = false;
-            } else if (self::check_opera_version()) {
+            } else if (self::is_opera()) {
                 // Opera 12 still does not support SVG well enough. Say no.
                 $instance->supportssvg = false;
             } else {
diff --git a/lib/editor/tinymce/lib.php b/lib/editor/tinymce/lib.php
index 195710d2990..f0e6a1950d3 100644
--- a/lib/editor/tinymce/lib.php
+++ b/lib/editor/tinymce/lib.php
@@ -34,29 +34,8 @@ class tinymce_texteditor extends texteditor {
      * @return bool
      */
     public function supported_by_browser() {
-        if (core_useragent::check_ie_version(6)) {
-            return true;
-        }
-        if (core_useragent::check_gecko_version(20030516)) {
-            return true;
-        }
-        if (core_useragent::check_safari_version(412)) {
-            return true;
-        }
-        if (core_useragent::check_chrome_version(6)) {
-            return true;
-        }
-        if (core_useragent::check_opera_version(9)) {
-            return true;
-        }
-        if (core_useragent::check_safari_ios_version(534)) {
-            return true;
-        }
-        if (core_useragent::check_webkit_version(534)) {
-            return true;
-        }
-
-        return false;
+        // We don't support any browsers which it doesn't support.
+        return true;
     }
 
     /**
diff --git a/lib/editor/tinymce/plugins/spellchecker/lib.php b/lib/editor/tinymce/plugins/spellchecker/lib.php
index a3c8540c1e1..330bbe44eae 100644
--- a/lib/editor/tinymce/plugins/spellchecker/lib.php
+++ b/lib/editor/tinymce/plugins/spellchecker/lib.php
@@ -63,7 +63,7 @@ class tinymce_spellchecker extends editor_tinymce_plugin {
 
     protected function is_legacy_browser() {
         // IE8 and IE9 are the only supported browsers that do not have spellchecker.
-        if (core_useragent::check_ie_version() and !core_useragent::check_ie_version(10)) {
+        if (core_useragent::is_ie() and !core_useragent::check_ie_version(10)) {
             return true;
         }
         // The rest of browsers supports spellchecking or is horribly outdated and we do not care...
diff --git a/lib/excellib.class.php b/lib/excellib.class.php
index 77341cc21c3..ea3cbad524e 100644
--- a/lib/excellib.class.php
+++ b/lib/excellib.class.php
@@ -120,7 +120,7 @@ class MoodleExcelWorkbook {
             header('Pragma: no-cache');
         }
 
-        if (core_useragent::check_ie_version()) {
+        if (core_useragent::is_ie()) {
             $filename = rawurlencode($filename);
         } else {
             $filename = s($filename);
diff --git a/lib/filelib.php b/lib/filelib.php
index 2260e4af3cd..59c0a9993c6 100644
--- a/lib/filelib.php
+++ b/lib/filelib.php
@@ -2126,7 +2126,7 @@ function readstring_accel($string, $mimetype, $accelerate) {
 function send_temp_file($path, $filename, $pathisstring=false) {
     global $CFG;
 
-    if (core_useragent::check_firefox_version('1.5')) {
+    if (core_useragent::is_firefox()) {
         // only FF is known to correctly save to disk before opening...
         $mimetype = mimeinfo('type', $filename);
     } else {
@@ -2146,7 +2146,7 @@ function send_temp_file($path, $filename, $pathisstring=false) {
     }
 
     // if user is using IE, urlencode the filename so that multibyte file name will show up correctly on popup
-    if (core_useragent::check_ie_version()) {
+    if (core_useragent::is_ie()) {
         $filename = urlencode($filename);
     }
 
@@ -2222,12 +2222,12 @@ function send_file($path, $filename, $lifetime = 'default' , $filter=0, $pathiss
     // Use given MIME type if specified, otherwise guess it using mimeinfo.
     // IE, Konqueror and Opera open html file directly in browser from web even when directed to save it to disk :-O
     // only Firefox saves all files locally before opening when content-disposition: attachment stated
-    $isFF         = core_useragent::check_firefox_version('1.5'); // only FF > 1.5 properly tested
+    $isFF         = core_useragent::is_firefox(); // only FF properly tested
     $mimetype     = ($forcedownload and !$isFF) ? 'application/x-forcedownload' :
                          ($mimetype ? $mimetype : mimeinfo('type', $filename));
 
     // if user is using IE, urlencode the filename so that multibyte file name will show up correctly on popup
-    if (core_useragent::check_ie_version()) {
+    if (core_useragent::is_ie()) {
         $filename = rawurlencode($filename);
     }
 
@@ -2386,12 +2386,12 @@ function send_stored_file($stored_file, $lifetime=86400 , $filter=0, $forcedownl
     // IE, Konqueror and Opera open html file directly in browser from web even when directed to save it to disk :-O
     // only Firefox saves all files locally before opening when content-disposition: attachment stated
     $filename     = is_null($filename) ? $stored_file->get_filename() : $filename;
-    $isFF         = core_useragent::check_firefox_version('1.5'); // only FF > 1.5 properly tested
+    $isFF         = core_useragent::is_firefox(); // only FF properly tested
     $mimetype     = ($forcedownload and !$isFF) ? 'application/x-forcedownload' :
                          ($stored_file->get_mimetype() ? $stored_file->get_mimetype() : mimeinfo('type', $filename));
 
     // if user is using IE, urlencode the filename so that multibyte file name will show up correctly on popup
-    if (core_useragent::check_ie_version()) {
+    if (core_useragent::is_ie()) {
         $filename = rawurlencode($filename);
     }
 
diff --git a/lib/medialib.php b/lib/medialib.php
index 2de7fc633ec..e001185fef4 100644
--- a/lib/medialib.php
+++ b/lib/medialib.php
@@ -983,7 +983,7 @@ class core_media_player_html5video extends core_media_player {
     public function embed($urls, $name, $width, $height, $options) {
         // Special handling to make videos play on Android devices pre 2.3.
         // Note: I tested and 2.3.3 (in emulator) works without, is 533.1 webkit.
-        $oldandroid = core_useragent::check_webkit_android_version() &&
+        $oldandroid = core_useragent::is_webkit_android() &&
                 !core_useragent::check_webkit_android_version('533.1');
 
         // Build array of source tags.
@@ -1067,12 +1067,12 @@ OET;
                 // versions or manual plugins.
                 if ($ext === 'ogv' || $ext === 'webm') {
                     // Formats .ogv and .webm are not supported in IE or Safari.
-                    if (core_useragent::check_ie_version() || core_useragent::check_safari_version()) {
+                    if (core_useragent::is_ie() || core_useragent::is_safari()) {
                         continue;
                     }
                 } else {
                     // Formats .m4v and .mp4 are not supported in Firefox or Opera.
-                    if (core_useragent::check_firefox_version() || core_useragent::check_opera_version()) {
+                    if (core_useragent::is_firefox() || core_useragent::is_opera()) {
                         continue;
                     }
                 }
@@ -1136,18 +1136,18 @@ OET;
             if (in_array($ext, $extensions)) {
                 if ($ext === 'ogg' || $ext === 'oga') {
                     // Formats .ogg and .oga are not supported in IE or Safari.
-                    if (core_useragent::check_ie_version() || core_useragent::check_safari_version()) {
+                    if (core_useragent::is_ie() || core_useragent::is_safari()) {
                         continue;
                     }
                 } else {
                     // Formats .aac, .mp3, and .m4a are not supported in Firefox or Opera.
-                    if (core_useragent::check_firefox_version() || core_useragent::check_opera_version()) {
+                    if (core_useragent::is_firefox() || core_useragent::is_opera()) {
                         continue;
                     }
                 }
                 // Old Android versions (pre 2.3.3) 'support' audio tag but no codecs.
-                if (core_useragent::check_webkit_android_version() &&
-                        !core_useragent::check_webkit_android_version('533.1')) {
+                if (core_useragent::is_webkit_android() &&
+                        !core_useragent::is_webkit_android('533.1')) {
                     continue;
                 }
 
diff --git a/lib/outputlib.php b/lib/outputlib.php
index e1051dd1cc1..231e0a20173 100644
--- a/lib/outputlib.php
+++ b/lib/outputlib.php
@@ -656,7 +656,7 @@ class theme_config {
 
         if ($rev > -1) {
             $url = new moodle_url("$CFG->httpswwwroot/theme/styles.php");
-            $separate = (core_useragent::check_ie_version('5') && !core_useragent::check_ie_version('10'));
+            $separate = (core_useragent::is_ie() && !core_useragent::check_ie_version('10'));
             if (!empty($CFG->slasharguments)) {
                 $slashargs = '';
                 if (!$svg) {
@@ -734,7 +734,7 @@ class theme_config {
                 // We do this because all modern browsers support SVG and this param will one day be removed.
                 $baseurl->param('svg', '0');
             }
-            if (core_useragent::check_ie_version('5')) {
+            if (core_useragent::is_ie()) {
                 // lalala, IE does not allow more than 31 linked CSS files from main document
                 $urls[] = new moodle_url($baseurl, array('theme'=>$this->name, 'type'=>'ie', 'subtype'=>'plugins'));
                 foreach ($css['parents'] as $parent=>$sheets) {
diff --git a/lib/tests/useragent_test.php b/lib/tests/useragent_test.php
index 21e0ef7b04a..7d74dd9d1da 100644
--- a/lib/tests/useragent_test.php
+++ b/lib/tests/useragent_test.php
@@ -163,53 +163,69 @@ class core_useragent_testcase extends basic_testcase {
      */
     public function test_check_browser_version() {
         core_useragent::instance(true, $this->user_agents['Safari']['412']['Mac OS X']);
+        $this->assertTrue(core_useragent::is_safari());
         $this->assertTrue(core_useragent::check_safari_version());
+        $this->assertTrue(core_useragent::is_webkit());
         $this->assertTrue(core_useragent::check_webkit_version());
         $this->assertTrue(core_useragent::check_safari_version('312'));
         $this->assertFalse(core_useragent::check_safari_version('500'));
+        $this->assertFalse(core_useragent::is_chrome());
         $this->assertFalse(core_useragent::check_chrome_version());
+        $this->assertFalse(core_useragent::is_safari_ios());
         $this->assertFalse(core_useragent::check_safari_ios_version());
 
         core_useragent::instance(true, $this->user_agents['Safari iOS']['528']['iPhone']);
+        $this->assertTrue(core_useragent::is_safari_ios());
         $this->assertTrue(core_useragent::check_safari_ios_version());
+        $this->assertTrue(core_useragent::is_webkit());
         $this->assertTrue(core_useragent::check_webkit_version());
         $this->assertTrue(core_useragent::check_safari_ios_version('527'));
         $this->assertFalse(core_useragent::check_safari_ios_version(590));
         $this->assertFalse(core_useragent::check_safari_version('312'));
         $this->assertFalse(core_useragent::check_safari_version('500'));
+        $this->assertFalse(core_useragent::is_chrome());
         $this->assertFalse(core_useragent::check_chrome_version());
 
         core_useragent::instance(true, $this->user_agents['WebKit Android']['530']['Nexus']);
+        $this->assertTrue(core_useragent::is_webkit());
         $this->assertTrue(core_useragent::check_webkit_version());
         $this->assertTrue(core_useragent::check_webkit_android_version('527'));
         $this->assertFalse(core_useragent::check_webkit_android_version(590));
+        $this->assertFalse(core_useragent::is_safari());
         $this->assertFalse(core_useragent::check_safari_version());
+        $this->assertFalse(core_useragent::is_chrome());
         $this->assertFalse(core_useragent::check_chrome_version());
 
         core_useragent::instance(true, $this->user_agents['Chrome']['8']['Mac OS X']);
+        $this->assertTrue(core_useragent::is_chrome());
         $this->assertTrue(core_useragent::check_chrome_version());
+        $this->assertTrue(core_useragent::is_webkit());
         $this->assertTrue(core_useragent::check_webkit_version());
         $this->assertTrue(core_useragent::check_chrome_version(8));
         $this->assertFalse(core_useragent::check_chrome_version(10));
         $this->assertFalse(core_useragent::check_safari_version('1'));
 
         core_useragent::instance(true, $this->user_agents['Opera']['9.0']['Windows XP']);
+        $this->assertTrue(core_useragent::is_opera());
         $this->assertTrue(core_useragent::check_opera_version());
         $this->assertTrue(core_useragent::check_opera_version('8.0'));
         $this->assertFalse(core_useragent::check_opera_version('10.0'));
 
         core_useragent::instance(true, $this->user_agents['MSIE']['6.0']['Windows XP SP2']);
+        $this->assertTrue(core_useragent::is_ie());
         $this->assertTrue(core_useragent::check_ie_version());
         $this->assertTrue(core_useragent::check_ie_version('5.0'));
         $this->assertFalse(core_useragent::check_ie_version('7.0'));
 
         core_useragent::instance(true, $this->user_agents['MSIE']['5.0']['Windows 98']);
+        $this->assertFalse(core_useragent::is_ie());
         $this->assertFalse(core_useragent::check_ie_version());
         $this->assertTrue(core_useragent::check_ie_version(0));
         $this->assertTrue(core_useragent::check_ie_version('5.0'));
         $this->assertFalse(core_useragent::check_ie_version('7.0'));
 
         core_useragent::instance(true, $this->user_agents['MSIE']['9.0']['Windows 7']);
+        $this->assertTrue(core_useragent::is_ie());
         $this->assertTrue(core_useragent::check_ie_version());
         $this->assertTrue(core_useragent::check_ie_version(0));
         $this->assertTrue(core_useragent::check_ie_version('5.0'));
@@ -217,6 +233,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_ie_version('10'));
 
         core_useragent::instance(true, $this->user_agents['MSIE']['9.0i']['Windows 7']);
+        $this->assertTrue(core_useragent::is_ie());
         $this->assertTrue(core_useragent::check_ie_version());
         $this->assertTrue(core_useragent::check_ie_version(0));
         $this->assertTrue(core_useragent::check_ie_version('5.0'));
@@ -224,6 +241,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_ie_version('10'));
 
         core_useragent::instance(true, $this->user_agents['MSIE']['10.0']['Windows 8']);
+        $this->assertTrue(core_useragent::is_ie());
         $this->assertTrue(core_useragent::check_ie_version());
         $this->assertTrue(core_useragent::check_ie_version(0));
         $this->assertTrue(core_useragent::check_ie_version('5.0'));
@@ -232,6 +250,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_ie_version('11'));
 
         core_useragent::instance(true, $this->user_agents['MSIE']['10.0i']['Windows 8']);
+        $this->assertTrue(core_useragent::is_ie());
         $this->assertTrue(core_useragent::check_ie_version());
         $this->assertTrue(core_useragent::check_ie_version(0));
         $this->assertTrue(core_useragent::check_ie_version('5.0'));
@@ -240,6 +259,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_ie_version('11'));
 
         core_useragent::instance(true, $this->user_agents['Firefox']['2.0']['Windows XP']);
+        $this->assertTrue(core_useragent::is_firefox());
         $this->assertTrue(core_useragent::check_firefox_version());
         $this->assertTrue(core_useragent::check_firefox_version('1.5'));
         $this->assertFalse(core_useragent::check_firefox_version('3.0'));
@@ -249,6 +269,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertTrue(core_useragent::check_gecko_version(2006010100));
 
         core_useragent::instance(true, $this->user_agents['Firefox']['1.0.6']['Windows XP']);
+        $this->assertTrue(core_useragent::is_firefox());
         $this->assertTrue(core_useragent::check_firefox_version());
         $this->assertTrue(core_useragent::check_gecko_version('1'));
         $this->assertFalse(core_useragent::check_gecko_version(20030516));
@@ -259,6 +280,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_gecko_version('2'));
 
         core_useragent::instance(true, $this->user_agents['Firefox']['2.0']['Windows XP']);
+        $this->assertTrue(core_useragent::is_firefox());
         $this->assertTrue(core_useragent::check_firefox_version());
         $this->assertTrue(core_useragent::check_firefox_version('1.5'));
         $this->assertTrue(core_useragent::check_gecko_version('1'));
@@ -269,6 +291,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_firefox_version('3.0'));
 
         core_useragent::instance(true, $this->user_agents['Firefox']['3.6']['Linux']);
+        $this->assertTrue(core_useragent::is_firefox());
         $this->assertTrue(core_useragent::check_firefox_version());
         $this->assertTrue(core_useragent::check_firefox_version('1.5'));
         $this->assertTrue(core_useragent::check_firefox_version('3.0'));
@@ -281,6 +304,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_firefox_version('10'));
 
         core_useragent::instance(true, $this->user_agents['Firefox']['3.6']['Linux']);
+        $this->assertTrue(core_useragent::is_firefox());
         $this->assertTrue(core_useragent::check_firefox_version());
         $this->assertTrue(core_useragent::check_firefox_version('1.5'));
         $this->assertTrue(core_useragent::check_firefox_version('3.0'));
@@ -295,6 +319,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_gecko_version('4'));
 
         core_useragent::instance(true, $this->user_agents['Firefox']['15.0a2']['Windows']);
+        $this->assertTrue(core_useragent::is_firefox());
         $this->assertTrue(core_useragent::check_firefox_version());
         $this->assertTrue(core_useragent::check_firefox_version('1.5'));
         $this->assertTrue(core_useragent::check_firefox_version('3.0'));
@@ -311,6 +336,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertFalse(core_useragent::check_gecko_version('18'));
 
         core_useragent::instance(true, $this->user_agents['Firefox']['18.0']['Mac OS X']);
+        $this->assertTrue(core_useragent::is_firefox());
         $this->assertTrue(core_useragent::check_firefox_version());
         $this->assertTrue(core_useragent::check_firefox_version('1.5'));
         $this->assertTrue(core_useragent::check_firefox_version('3.0'));
@@ -335,6 +361,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertTrue(core_useragent::check_gecko_version(2006010100));
         $this->assertFalse(core_useragent::check_gecko_version('3.6'));
         $this->assertFalse(core_useragent::check_gecko_version('4.0'));
+        $this->assertFalse(core_useragent::is_firefox());
         $this->assertFalse(core_useragent::check_firefox_version());
 
         core_useragent::instance(true, $this->user_agents['SeaMonkey']['2.1']['Linux']);
@@ -344,6 +371,7 @@ class core_useragent_testcase extends basic_testcase {
         $this->assertTrue(core_useragent::check_gecko_version(20030516));
         $this->assertTrue(core_useragent::check_gecko_version(20051106));
         $this->assertTrue(core_useragent::check_gecko_version(2006010100));
+        $this->assertTrue(core_useragent::is_firefox());
         $this->assertTrue(core_useragent::check_firefox_version());
         $this->assertTrue(core_useragent::check_firefox_version(4.0));
         $this->assertFalse(core_useragent::check_firefox_version(5));
@@ -416,4 +444,4 @@ class core_useragent_testcase extends basic_testcase {
 
         core_useragent::instance(true);
     }
-}
\ No newline at end of file
+}
diff --git a/theme/bootstrapbase/config.php b/theme/bootstrapbase/config.php
index 6a3bd9ad2a8..4ca1d8376f9 100644
--- a/theme/bootstrapbase/config.php
+++ b/theme/bootstrapbase/config.php
@@ -164,7 +164,7 @@ $THEME->javascripts_footer = array(
     'moodlebootstrap',
 );
 
-if (core_useragent::check_ie_version() && !core_useragent::check_ie_version('9.0')) {
+if (core_useragent::is_ie() && !core_useragent::check_ie_version('9.0')) {
     $THEME->javascripts[] = 'html5shiv';
 }