js实现倒计时（转）

function JSTime(vYear,vMonth-1,vDate,vHour,vMinute,vSecond, vState)
{
        if (vState == 0)
        {        
            //设置过期日期
            var expireDate = new Date(vYear,vMonth-1,vDate,vHour,vMinute,vSecond);
            //设置当前日期
            var thisTime = new Date();
            //总计剩余时间(毫秒)
            var remainTime = expireDate-thisTime;
            if(remainTime>0){
                var remainDay,remainHour,remainMinute,remainSecond;
                remainDay = Math.floor(remainTime/1000/3600/24);
                remainTime = remainTime - (remainDay*1000*3600*24);
                remainHour = Math.floor(remainTime/1000/3600);
                remainTime = remainTime - (remainHour*1000*3600);
                remainMinute = Math.floor(remainTime/1000/60);
                remainTime = remainTime - (remainMinute*1000*60);
                remainSecond = Math.floor(remainTime/1000);
                remainTime = remainDay+"天"+remainHour+"小时"+remainMinute+"分"+remainSecond+"秒";
                document.all["time"].innerHTML =remainTime;
            }
            else
                document.all["time"].innerHTML ="问题结束";
        }
        else
                   document.all["time"].innerHTML ="问题结束";
}