//获得当前时间,刻度为一千分一秒 
var initializationTime=(new Date()).getTime(); 
function showLeftTime()
{
 var now=new Date();
 var year=now.getYear();
 var month=now.getMonth();
 var day=now.getDate();
 var hours=now.getHours();
 var minutes=now.getMinutes();
 var seconds=now.getSeconds();
 document.all.show.innerHTML="北京时间:"+year+"年"+month+"月"+day+"日"+hours+"时"+minutes+"分";
 //设定结束时间
 //1秒=1000毫秒
 endTime=initializationTime+60000;
 //设定并显示剩余时间
 var leftTime=endTime-(new Date()).getTime();
 if(leftTime>0)
 {
  document.all.showLeft.innerHTML=leftTime+"微秒后停止!";
 }
 else
 { 
  clearTimeout(timeID);
  document.all.showLeft.innerHTML="TimeOut!";
  return false;
 }
 //一秒刷新一次显示时间 
 var timeID=setTimeout(showLeftTime,1000); 
}