JavaScript打开页面后自动随机跳转页面代码

html
head
meta http-equiv="Content-Type" content="text/html; charset=gb2312"
titlewww.joyrssmail.com/title
script language=javascript
function randompage(){
var randomindex=Math.floor(Math.random()*3)+1;//如果你有四个页面就把3改成4，如果有5个，就把3改成5
top.location.replace('index'+randomindex+'.htm');
}
randompage()
/script
/head
body onload="randompage()"
/body
/html