网上搜来的，看样子不错，记一笔。//------------------------------------

//heavilybasedontheQuirksmodeaddEventcontestwinner,JohnResig

//addEvent

functionaddEvent(obj,type,fn){

if(obj.addEventListener)obj.addEventListener(type,fn,false);

elseif(obj.attachEvent){

obj["e"+type+fn]=fn;

obj[type+fn]=function(){obj["e"+type+fn](window.event);}

obj.attachEvent("on"+type,obj[type+fn]);

}

}

//------------------------------------

//removeEvent

functionremoveEvent(obj,type,fn){

if(obj.removeEventListener)obj.removeEventListener(type,fn,false);

elseif(obj.detachEvent){

obj.detachEvent("on"+type,obj[type+fn]);

obj[type+fn]=null;

obj["e"+type+fn]=null;

}

}