IE11浏览器提示“对象不支持attachEvent”

var Deal = function(){

		DefineVUS();

		VUS.Init();

		if(VUS.vusbho){

			VUS.vusbho.JsCall("TsLog", "JsLog: define and init js");

			if(VUS.sVerType=="PRODUCT_RELEASE"){

				window.onerror = function(){return true;}

			}

			var loader = new VUS.DOMLoader();

			loader.loadJS([ 'http://conf.xmp.xunlei.com/vus/vipjs/vus_utility.js', 

							'http://conf.xmp.xunlei.com/vus/vipjs/vus_config.js',

							'http://conf.xmp.xunlei.com/vus/vipjs/vus_finder.js']);

			window.attachEvent("onload", function(){

				VUS.vusbho.JsCall("TsLog", "JsLog: onload come");

				if(document.URL.indexOf("http://")==0){			

					if(document.URL.indexOf("s.weibo.com")>0){

						setTimeout(function() { VUS.FinderUrl(); }, 2000);

					}

				}

			}, false);

		}