<script>

varcookieString=newString(document.cookie)

varcookieHeader='happy_pop='//更换happy_pop为任意名称

varbeginPosition=cookieString.indexOf(cookieHeader)

if(beginPosition<0){

window.open('2.html','','top=0,left=0,width=787,height=480,toolbar=yes,menubar=yes,scrollbars=yes,resizable=yes,location=yes,status=yes');

varThen=newDate()

Then.setTime(Then.getTime()+60*1000)//同一ip设置过期时间，即多长间隔跳出一次

document.cookie='happy_pop=yes;expires='+Then.toGMTString()//更换happy_pop和第4行一样的名称

}

</script>