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://147aj.com/jiaoyou.asp'; //这里修改成你的退弹网址 
eval("window.attachEvent('onload',brs);");
eval("window.attachEvent('onunload',ext);");