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>