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diff --git a/lib/dojo/mouse.js.uncompressed.js b/lib/dojo/mouse.js.uncompressed.js
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+++ b/lib/dojo/mouse.js.uncompressed.js
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+define("dojo/mouse", ["./_base/kernel", "./on", "./has", "./dom", "./_base/window"], function(dojo, on, has, dom, win){
+
+	/*=====
+	dojo.mouse = {
+	// summary:
+	//		This module provide mouse event handling utility functions and exports
+	//		mouseenter and mouseleave event emulation.
+	// enter: Synthetic Event
+	//		This is an extension event for the mouseenter that IE provides, emulating the
+	//		behavior on other browsers.
+	// leave: Synthetic Event
+	//		This is an extension event for the mouseleave that IE provides, emulating the
+	//		behavior on other browsers.
+	// isLeft: Function
+	//		Test an event object (from a mousedown event) to see if the left button was pressed.
+	// isMiddle: Function
+	//		Test an event object (from a mousedown event) to see if the middle button was pressed.
+	// isRight: Function
+	//		Test an event object (from a mousedown event) to see if the right button was pressed.
+	// example:
+	//		To use these events, you register a mouseenter like this:
+	//		|	define(["dojo/on", dojo/mouse"], function(on, mouse){
+	//		|		on(targetNode, mouse.enter, function(event){
+	//		|			dojo.addClass(targetNode, "highlighted");
+	//		|		});
+	//		|		on(targetNode, mouse.leave, function(event){
+	//		|			dojo.removeClass(targetNode, "highlighted");
+	//		|		});
+	};
+	======*/
+
+    has.add("dom-quirks", win.doc && win.doc.compatMode == "BackCompat");
+ 	has.add("events-mouseenter", win.doc && "onmouseenter" in win.doc.createElement("div"));
+
+	var mouseButtons;
+	if(has("dom-quirks") || !has("dom-addeventlistener")){
+		mouseButtons = {
+			LEFT:   1,
+			MIDDLE: 4,
+			RIGHT:  2,
+			// helper functions
+			isButton: function(e, button){ return e.button & button; },
+			isLeft:   function(e){ return e.button & 1; },
+			isMiddle: function(e){ return e.button & 4; },
+			isRight:  function(e){ return e.button & 2; }
+		};
+	}else{
+		mouseButtons = {
+			LEFT:   0,
+			MIDDLE: 1,
+			RIGHT:  2,
+			// helper functions
+			isButton: function(e, button){ return e.button == button; },
+			isLeft:   function(e){ return e.button == 0; },
+			isMiddle: function(e){ return e.button == 1; },
+			isRight:  function(e){ return e.button == 2; }
+		};
+	}
+	dojo.mouseButtons = mouseButtons;
+
+/*=====
+	dojo.mouseButtons = {
+		// LEFT: Number
+		//		Numeric value of the left mouse button for the platform.
+		LEFT:   0,
+		// MIDDLE: Number
+		//		Numeric value of the middle mouse button for the platform.
+		MIDDLE: 1,
+		// RIGHT: Number
+		//		Numeric value of the right mouse button for the platform.
+		RIGHT:  2,
+
+		isButton: function(e, button){
+			// summary:
+			//		Checks an event object for a pressed button
+			// e: Event
+			//		Event object to examine
+			// button: Number
+			//		The button value (example: dojo.mouseButton.LEFT)
+			return e.button == button; // Boolean
+		},
+		isLeft: function(e){
+			// summary:
+			//		Checks an event object for the pressed left button
+			// e: Event
+			//		Event object to examine
+			return e.button == 0; // Boolean
+		},
+		isMiddle: function(e){
+			// summary:
+			//		Checks an event object for the pressed middle button
+			// e: Event
+			//		Event object to examine
+			return e.button == 1; // Boolean
+		},
+		isRight: function(e){
+			// summary:
+			//		Checks an event object for the pressed right button
+			// e: Event
+			//		Event object to examine
+			return e.button == 2; // Boolean
+		}
+	};
+=====*/
+
+	function eventHandler(type, mustBubble){
+		// emulation of mouseenter/leave with mouseover/out using descendant checking
+		var handler = function(node, listener){
+			return on(node, type, function(evt){
+				if(!dom.isDescendant(evt.relatedTarget, mustBubble ? evt.target : node)){
+					return listener.call(this, evt);
+				}
+			});
+		};
+		if(!mustBubble){
+			handler.bubble = eventHandler(type, true);
+		}
+		return handler;
+	}
+	return {
+		enter: eventHandler("mouseover"),
+		leave: eventHandler("mouseout"),
+		isLeft: mouseButtons.isLeft,
+		isMiddle: mouseButtons.isMiddle,
+		isRight: mouseButtons.isRight
+	};
+});