jquery 倒計時

<script type="text/javascript">
$(function(){
	countDown("2015/9/8 11:11:59","#colockbox1");
});
function countDown(time,id){
	var day_elem = $(id).find('.day');
	var hour_elem = $(id).find('.hour');
	var minute_elem = $(id).find('.minute');
	var second_elem = $(id).find('.second');
	
	//if(typeof end_time == "string")
	var end_time = new Date(time).getTime(),//月份是實際月份-1
	sys_second = (end_time-new Date().getTime())/1000;
	var timer = setInterval(function(){
		if (sys_second > 1) {
			sys_second -= 1;
			var day = Math.floor((sys_second / 3600) / 24);
			var hour = Math.floor((sys_second / 3600) % 24);
			var minute = Math.floor((sys_second / 60) % 60);
			var second = Math.floor(sys_second % 60);
			day_elem && $(day_elem).text(day);//計算天
			$(hour_elem).text(hour<10?"0"+hour:hour);//計算小時
			$(minute_elem).text(minute<10?"0"+minute:minute);//計算分鐘
			$(second_elem).text(second<10?"0"+second:second);//計算秒殺
		} else { 
			clearInterval(timer);
		}
	}, 1000);
}
</script>

html:

<div class="colockbox" id="colockbox1"> 
    <span class="day">00</span> 
    <span class="hour">00</span> 
    <span class="minute">00</span>
    <span class="second">00</span>
</div>

公司做了個秒殺頁面，需要做一個倒計時效果，特此收藏

代碼下載：http://download.csdn.net/detail/helpzp2008/5721185