<script type="text/javascript">
function popwin()
{
var cookieString = new String(document.cookie)
var cookieHeader = 'lamking='
var beginPosition = cookieString.indexOf(cookieHeader)
if (beginPosition <0){
window.open('http://www.8bio.com/','','location=yes,resizable=yes,width=350,height=320');
var Then = new Date()　　　　
Then.setTime(Then.getTime() + 12*60*60*1000 )
document.cookie = 'lamking=yes;expires='+ Then.toGMTString()　
 }
}
</script>

 

 

2。把下面代码加入BODY区域