jsカウントダウンソースコード

<DIV class=demo>
<P class="pl20 b f14">    ，         <SPAN class=red>2050 7 30   12  </SPAN></P>
<DIV class=tuan_img_x>
<DIV class="time_x tc lh24 b">
<span id=year class="year time_td">0</span>
<span id=month class="month time_td">00</span>
<span id=day class="day time_td">00</span>
<span id=hour class="hour time_td">00</span>
<span id=mini class="time_td mini ml5">00</span>
<span id=sec class="sec time_td">00</span>
<span id=minisec class="sec time_td">000</span>
</DIV>
</DIV>
</DIV>

<SCRIPT type=text/javascript>

var fnTimeCountDown = function(d, o){
	var f = {
		zero: function(n){
			var n = parseInt(n, 10);
			if(n > 0){
				if(n <= 9){
					n = "0" + n;	
				}
				return String(n);
			}else{
				return "00";	
			}
		},
		dv: function(){
			d = d || Date.UTC(2050, 0, 1); //       ，           2050 1 1 
			var future = new Date(d), now = new Date();
			//       
			var dur = Math.round((future.getTime() - now.getTime()) / 1000) + future.getTimezoneOffset() * 60, 
			dur_minisec = (Math.random())*1000,  pms = {
				minisec: "000",
				sec: "00",
				mini: "00",
				hour: "00",
				day: "00",
				month: "00",
				year: "0"
			};
			if(dur > 0){
				pms.minisec = f.zero(dur_minisec);
				pms.sec = f.zero(dur % 60);
				pms.mini = Math.floor((dur / 60)) > 0? f.zero(Math.floor((dur / 60)) % 60) : "00";
				pms.hour = Math.floor((dur / 3600)) > 0? f.zero(Math.floor((dur / 3600)) % 24) : "00";
				pms.day = Math.floor((dur / 86400)) > 0? f.zero(Math.floor((dur / 86400)) % 30) : "00";
				//  ，           
				pms.month = Math.floor((dur / 2629744)) > 0? f.zero(Math.floor((dur / 2629744)) % 12) : "00";
				//  ，     365 5 48 46  
				pms.year = Math.floor((dur / 31556926)) > 0? Math.floor((dur / 31556926)) : "0";
			}
			return pms;
		},
		ui: function(){
			if(o.minisec){
				o.minisec.innerHTML = f.dv().minisec;
			}
			if(o.sec){
				o.sec.innerHTML = f.dv().sec;
			}
			if(o.mini){
				o.mini.innerHTML = f.dv().mini;
			}
			if(o.hour){
				o.hour.innerHTML = f.dv().hour;
			}
			if(o.day){
				o.day.innerHTML = f.dv().day;
			}
			if(o.month){
				o.month.innerHTML = f.dv().month;
			}
			if(o.year){
				o.year.innerHTML = f.dv().year;
			}
			setTimeout(f.ui,1);
		}
	};	
	f.ui();
};

var zxx = {
	$: function(id){
		return document.getElementById(id);	
	},
	futureDate: Date.UTC(2050, 6, 30, 12),
	obj: function(){
		return {
			minisec: zxx.$("minisec"),
			sec: zxx.$("sec"),
			mini: zxx.$("mini"),
			hour: zxx.$("hour"),
			day: zxx.$("day"),
			month: zxx.$("month"),
			year: zxx.$("year")
		}
	}
};

fnTimeCountDown(zxx.futureDate, zxx.obj());

</SCRIPT>