diff --git a/rhodecode/public/js/yui/event-mouseenter/event-mouseenter.js b/rhodecode/public/js/yui/event-mouseenter/event-mouseenter.js
deleted file mode 100644
--- a/rhodecode/public/js/yui/event-mouseenter/event-mouseenter.js
+++ /dev/null
@@ -1,219 +0,0 @@
-/*
-Copyright (c) 2010, Yahoo! Inc. All rights reserved.
-Code licensed under the BSD License:
-http://developer.yahoo.com/yui/license.html
-version: 2.8.2r1
-*/
-/**
- * Augments the Event Utility with support for the mouseenter and mouseleave 
- * events:  A mouseenter event fires the first time the mouse enters an 
- * element; a mouseleave event first the first time the mouse leaves an 
- * element.
- * 
- * @module event-mouseenter
- * @title Event Utility mouseenter and mouseout Module
- * @namespace YAHOO.util
- * @requires event
- */
-
-(function () {
-
-	var Event = YAHOO.util.Event,
-		Lang = YAHOO.lang,
-
-		addListener = Event.addListener,
-		removeListener = Event.removeListener,
-		getListeners = Event.getListeners,
-
-		delegates = [],
-		
-		specialTypes = {
-			mouseenter: "mouseover",
-			mouseleave: "mouseout"
-		}, 
-
-		remove = function(el, type, fn) {
-
-			var index = Event._getCacheIndex(delegates, el, type, fn),
-				cacheItem,
-				returnVal;
-
-		    if (index >= 0) {
-		        cacheItem = delegates[index];
-		    }
-
-		    if (el && cacheItem) {
-
-				//	removeListener will translate the value of type				
-		        returnVal = removeListener.call(Event, cacheItem[0], type, cacheItem[3]);
-		
-				if (returnVal) {
-	                delete delegates[index][2];
-	                delete delegates[index][3];
-	                delegates.splice(index, 1);
-				}
-		
-		    }
-
-			return returnVal;
-
-		};		
-
-
-	Lang.augmentObject(Event._specialTypes, specialTypes); 
-
-	Lang.augmentObject(Event, {
-
-		/**
-		 * Creates a delegate function used to call mouseover and mouseleave 
-		 * event listeners specified via the 
-		 * <code>YAHOO.util.Event.addListener</code> 
-		 * or <code>YAHOO.util.Event.on</code> method.
-		 *
-		 * @method _createMouseDelegate
-		 *
-		 * @param {Function} fn        The method (event listener) to call
-		 * @param {Object}   obj    An arbitrary object that will be 
-		 *                             passed as a parameter to the listener
-		 * @param {Boolean|object}  overrideContext  If true, the value of the 
-		 * 							obj parameter becomes the execution context
-		 *                          of the listener. If an object, this object
-		 *                          becomes the execution context. 
-		 * @return {Function} Function that will call the event listener 
-		 * specified by either the <code>YAHOO.util.Event.addListener</code> 
-		 * or <code>YAHOO.util.Event.on</code> method.
-	     * @private
-		 * @static
-	     * @for Event
-		 */
-		_createMouseDelegate: function (fn, obj, overrideContext) {
-
-			return function (event, container) {
-
-				var el = this,
-					relatedTarget = Event.getRelatedTarget(event),
-					context,
-					args;
-
-				if (el != relatedTarget && !YAHOO.util.Dom.isAncestor(el, relatedTarget)) {
-
-					context = el;
-
-			        if (overrideContext) {
-			            if (overrideContext === true) {
-			                context = obj;
-			            } else {
-			                context = overrideContext;
-			            }
-			        }
-
-					//	The default args passed back to a mouseenter or 
-					//	mouseleave listener are: the event, the element 
-					//	to which the listener is bound, and any object the  
-					//	user passed when subscribing
-
-					args = [event, el, obj];
-
-					//	Add the delegation container as an argument when 
-					//	delegating mouseenter and mouseleave
-
-					if (container) {
-						args.splice(2, 0, container);
-					}
-
-					return fn.apply(context, args);
-
-				}
-
-			};
-
-		},
-		
-		addListener: function (el, type, fn, obj, overrideContext) {
-
-			var fnDelegate,
-				returnVal;
-
-			if (specialTypes[type]) {
-
-				fnDelegate = Event._createMouseDelegate(fn, obj, overrideContext);
-				
-				fnDelegate.mouseDelegate = true;
-
-				delegates.push([el, type, fn, fnDelegate]);
-
-				//	addListener will translate the value of type
-				returnVal = addListener.call(Event, el, type, fnDelegate);
-
-			}
-			else {
-				returnVal = addListener.apply(Event, arguments);
-			}
-
-			return returnVal;
-
-		},
-		
-		removeListener: function (el, type, fn) {
-
-			var returnVal;
-
-			if (specialTypes[type]) {
-				returnVal = remove.apply(Event, arguments);
-			}
-			else {
-				returnVal = removeListener.apply(Event, arguments);
-			}
-
-			return returnVal;
-
-		},
-		
-		getListeners: function (el, type) {
-
-			//	If the user specified the type as mouseover or mouseout, 
-			//	need to filter out those used by mouseenter and mouseleave.
-			//	If the user specified the type as mouseenter or mouseleave, 
-			//	need to filter out the true mouseover and mouseout listeners.
-
-			var listeners = [],
-				elListeners,
-				bMouseOverOrOut = (type === "mouseover" || type === "mouseout"),
-				bMouseDelegate,
-				i,
-				l;
-			
-			if (type && (bMouseOverOrOut || specialTypes[type])) {
-				
-				elListeners = getListeners.call(Event, el, this._getType(type));
-
-	            if (elListeners) {
-
-	                for (i=elListeners.length-1; i>-1; i--) {
-
-	                    l = elListeners[i];
-						bMouseDelegate = l.fn.mouseDelegate;
-
-						if ((specialTypes[type] && bMouseDelegate) || (bMouseOverOrOut && !bMouseDelegate)) {
-							listeners.push(l);
-						}
-
-	                }
-
-	            }
-				
-			}
-			else {
-				listeners = getListeners.apply(Event, arguments);
-			}
-
-            return (listeners && listeners.length) ? listeners : null;
-			
-		}
-		
-	}, true);
-	
-	Event.on = Event.addListener;
-
-}());
-YAHOO.register("event-mouseenter", YAHOO.util.Event, {version: "2.8.2r1", build: "7"});