function addEvent(obj, evType, fn){
	if(obj.addEventListener)obj.addEventListener(evType,fn,true)
	if(obj.attachEvent)obj.attachEvent("on"+evType,fn)
}
function getSource(e){
	if(typeof e=='undefined')var e=window.event;
	var source=typeof e.target!='undefined'?e.target:typeof e.srcElement!='undefined'?e.srcElement:true
	if(source.nodeType == 3)source=source.parentNode;
	return source
}