js 计时显示 倒着 正者 都行

  //倒计时显示
  function leftTimer(year,month,day,hour,minute,second){ 
      var leftTime = (new Date(year,month-1,day,hour,minute,second)) - (new Date()); //计算剩余的毫秒数 
      var days = parseInt(leftTime / 1000 / 60 / 60 / 24 , 10); //计算剩余的天数 
      var hours = parseInt(leftTime / 1000 / 60 / 60 % 24 , 10); //计算剩余的小时 
      var minutes = parseInt(leftTime / 1000 / 60 % 60, 10);//计算剩余的分钟 
      var seconds = parseInt(leftTime / 1000 % 60, 10);//计算剩余的秒数 
      days = checkTime(days); 
      hours = checkTime(hours); 
      minutes = checkTime(minutes); 
      seconds = checkTime(seconds); 
      setInterval("leftTimer(<?=date('Y',$cbtimes)?>,<?=date('m',$cbtimes)?>,<?=date('d',$cbtimes)?>,<?=date('H',$cbtimes)?>,<?=date('i',$cbtimes)?>,<?=date('s',$cbtimes)?>)",1000); 
      document.getElementById("cuiban").innerHTML = '剩余时间: '+days+"天" + hours+"小时" + minutes+"分"+seconds+"秒";  
  } 
  function checkTime(i){ //将0-9的数字前面加上0，例1变为01 
    if(i<10) 
    { 
      i = "0" + i; 
    } 
    return i; 
  }