jquery 倒计时

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<script type="text/javascript">
		$(function(){
			function ShowTimes(){
				//month dd,yyyy hh:mm:ss
				var AfterTime= 1338278104000;
				var LeaveTime = AfterTime - new Date();
				$("#hour").html("00");
				$("#minute").html("00");
				$("#second").html("00");
				$("#min_second").html("0");
				if (LeaveTime > 0) {
					var LeaveDays=Math.floor(LeaveTime/(1000*60*60*24));//天
					var LeaveHours=Math.floor(LeaveTime/(1000*60*60)%24);//时
					var LeaveMinutes=Math.floor(LeaveTime/(1000*60)%60);//分
					var LeaveSeconds=Math.floor(LeaveTime/1000%60);//秒
					var c=new Date();
					var q=c.getMilliseconds();
					if(q<10)//因为毫秒为一位数时只占一个字符位置，会让毫秒二字变动位置
					{
					    q="00"+c.getMilliseconds();
					}
					if(q>=10 && q<100)//因为毫秒为两位数时只占两个字符位置，会让毫秒二字变动位置
					{
					    q="0"+c.getMilliseconds();
					}
					var qs = 9 - parseInt(q/100);
					if (LeaveHours < 10) {
						LeaveHours = "0" + LeaveHours;
					}
					if (LeaveMinutes < 10) {
						LeaveMinutes = "0" + LeaveMinutes;
					}

					$("#hour").html(LeaveHours);
					$("#minute").html(LeaveMinutes);
					$("#second").html(LeaveSeconds);
					$("#min_second").html(qs);
				}
			}
			setInterval(ShowTimes,10);
		});
	</script>