JS 跳转页面延迟2种方法

<SPAN style="FONT-SIZE: 12px"><script type="text/javascript">
<!--
function go(t,url){
//t设置跳转时间：秒
//url设置跳转网址
document.write("<div id=text>本页将在<strong id='tt'></strong>后，跳转至：<span id='link'></span></div>");
document.getElementById("link").innerHTML="<a href="+url+">"+url+"</a>";
$(t,url);
}
function $(t,url){
ta = t-1;
tb = t + "000";
d = document.getElementById("tt");
d.innerHTML=t;
window.setInterval(function()
{
go_to(url);
},1000);
}
function go_to(url){
d.innerHTML=ta--;
if(ta<0){
document.write("正在跳转至：<a href="+url+">"+url+"</a>");
location.href=url;
}
else{
return;
}
}
//-->
</script>
<script type="text/javascript">
go(5, "/Login.aspx")
</script> </SPAN>

window.setTimeout("window.location='index.shtml'",2000);
//两秒后跳转新页面