js时间倒计时程序

<script language="javascript" type="text/javascript">
<!---->
</script>

 

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<script language="javascript">
<!---->
</script>

 

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<script language="javascript">
function t()
{a=new Date();
now = new Date((Math.floor(a.getTime()/1000)*10+i+288000)*100);
  i++;
document.all("times").innerHTML = now.toGMTString().substr(0,25)+" "+(i%10)
}
var i=0;
setInterval("t()",99)
</script>