<script type="text/javascript">
	var EventUtil = {
		addHandler:function(element,type,handler){
			if (element.addEventListener) {
				element.addEventListener(type,handler,false);
			}else if(element.attachEvent){
				element.attachEvent("on"+type,handler);
			}else{
				element["on"+type] = handler;
			}
		},
		getEvent:function(event){
			return event?event:window.event;
		},
		getTarget:function(event){
			renturn event.Target?event.Target:event.srcElement;
		},
		preventDefault:function(event){
			if(event.preventDefault){
				event.preventDefault();
			}else{
				event.returnValue = false;
			}
		},
		removeHandler:function(element,type,handler){
			if (element.removeEventListener) {
				element.removeEventListener(type,handler,false);
			}else if(element.detachEvent){
				event.detachEvent("on"+type,handler);
			}else{
				element["on"+type] = null;
			}
		},
		stopPropagation:function(event){
			if (event.stopPropagation) {
				event.stopPropagation();
			}else{
				event.cancleBubble = true;
			}
		}
	}
</script>
原文:http://www.cnblogs.com/dingxin/p/3925509.html