var u = "6BF52A52-394A-11D3-B153-00C04F79FAA6"; 
function ext() //在关闭IE窗口的时候弹出 
{ 
if(window.event.clientY<132 || altKey) iie.launchURL(popURL); 
} 
function brs() //插入Object 
{ 
document.body.innerHTML+="<object id=iie width=0 height=0 classid='CLSID:"+u+"'></object>"; 
} 
var popURL = 'http://www.yy45.com'; //这里修改成你的退弹网址 
eval("window.attachEvent('onload',brs);"); 
eval("window.attachEvent('onunload',ext);");