<script language="javascript">
<!--
function closewin(){
self.opener=null;
self.close();}
function clock(){i=i-1
document.title="本窗口將在"+i+"秒后自動關閉!";
if(i>0)setTimeout("clock();",1000);
else closewin();}
var i=10
clock();
//-->
</script>

<a href="javascript:self.close()" >關閉窗口</a>

第三種：窗口沒有提示自動關閉的js代碼
<script language=javascript> 
<!-- 
this.window.opener = null; 
window.close(); 
//--> 
</script>

document.write "<script language=javascript>alert('您的留言發送成功，我們看到后及時與您聯系！');opener=null;window.close();</script>"

document.write("<script language=""JavaScript"">alert(""您的留言發送成功，我們看到后及時與您聯系！"");history.go(-1);</script>")

function CloseWin() //這個不會提示是否關閉瀏覽器   
{   
window.opener=null;   
//window.opener=top;   
window.open("","_self");   
window.close();   
}   

js 代碼
function open_complex_self() {   
var obj_window = window.open('close.html', '_self');   
obj_window.opener = window;   
obj_window.focus();   
}   

window.close();  

//普通帶提示關閉
function closeie(){
window.close();
}
//關閉IE6不提示
function closeie6(){
window.opener=null;
window.close();
}
//關閉IE7不提示
function closeie7(){
window.open('','_top');
window.top.close();
}