可以每天连接到不同连接的代码不能超过31天

<SCRIPT LANGUAGE="javascript">

<!--

//more javascript from http://knowsky.com

var Time=86400; //设置每次弹出的相间隔的时间以秒为单位,现在是一天

function Set(){

var Then=new Date();

Then.setTime(Then.getTime()+Time*1000);

documents.cookie="knowsky=1;expires="+Then.toGMTString();

}

var cookieString=new String(documents.cookie);

var cookieHeader="knowsky=";

var beginPosition=cookieString.indexOf(cookieHeader);

if (beginPosition<0){

window.open("http://www.knowsky.com/","","width=400,height=300"); //设置弹出窗口的大小

Set();

}

//-->

</SCRIPT>