// JScript 文件
        var EventUtil=new Object;
        EventUtil.addEventHandler=function(oTarget,sEventType,fnHandler)
        {
                if(oTarget.addEventListener)  //dom兼容
                {
                    oTarget.addEventListener(sEventType,fnHandler,false);
                }
                else if(oTarget.attachEvent)  //IE
                {
                    oTarget.attachEvent("on"+sEventType,fnHandler);
                }
                else
                {
                    oTarget["on"+sEventType]=fnHandler;
                }
            }

            EventUtil.removeEventHandler=function(oTarget,sEventType,fnHandler)
            {
                if(oTarget.removeEventListener)
                {
                    oTarget.removeEventListener(sEventType,fnHandler,false);
                }
                else if(oTarget.detachEvent)
                {
                    oTarget.detachEvent("on"+sEventType,fnHandler);
                }
                else
                {
                    oTarget["on"+sEventType]=null;
                }
        }