window.addEvent('domready', function() {
	var status = 0;
	$$('#nav li a img').each(function(el){
		el.addEvent('mouseenter',function(){
			var firstStr = el.get('src').split(".jpg");
			str = firstStr[0] + "_on.jpg";
			el.set('src', str);
			status = 1;
		});
		el.addEvent('mouseleave',function(){
			if (status==1) {
				var firstStr = el.get('src').split("_on.jpg");
				str = firstStr[0] + ".jpg";
				el.set('src',str);
				status = 0;
			}
		});
	});
	var myMenu = new MenuMatic({});
});