(function() {
	var Dom = YAHOO.util.Dom, Event = YAHOO.util.Event;
	var $ = Dom.get;
	function log(v) {
	  if (typeof console != 'undefined') {
		 console.log(v);
	  }
	}

	function menu_on(e) {
	  var t = Event.getTarget(e);
	  if (t.tagName == 'IMG') {
		 t.src = t.src.replace('_off','_on');
	  }
	}
	function menu_off(e) {
	  var t = Event.getTarget(e);
	  if (t.tagName == 'IMG') {
		 t.src = t.src.replace('_on','_off');
	  }

	}

	function init() {
	  Event.on('menu','mouseover',menu_on);
	  Event.on('menu','mouseout',menu_off);
	}
	Event.onDOMReady(init);

 })();