<SCRIPT LANGUAGE="JavaScript"> 
<!-- 
var time="3600"; 
var atime="300"; //定義時間 
var etime="0"; 
function count(){ 
setTimeout("count()",1000); //1000毫秒＝1秒加載一次計數 
document.form1.rest.value=format(Math.floor(time/60))+"分:"+format(time%60)+"秒"; 
time--; 
if(time==atime){ 
alert("還剩5分鐘"); 
} 
if(time==etime-1){ 
alert("時間到，已經自動提交"); 
document.form1.submit(); \\\\
} 
} 

function format(time){ 
var len=time.toString().length; 
for(i=0;i<2-len;i++){ 
time="0"+time; 
} 
return time; 
} 

//--> 
</SCRIPT> 
<form action="Save.Asp" method="post" name="form1" /> 
<INPUT TYPE="button" Value="開始" onClick="count()" /> 
<INPUT TYPE="text" NAME="rest" Value="60分:00秒" /> 
</form>