var target = []
var s_t;
function s_d_t() {
	s_t = setTimeout("s_d_t()", 1000);
	for (var i = 0, j = target.length; i < j; i++) {
		today = new Date();
		timeold = target[i] - today.getTime();
		sectimeold = timeold / 1000;
		secondsold = Math.floor(sectimeold);
		msPerDay = 24 * 60 * 60 * 1000;
		e_daysold = timeold / msPerDay;
		daysold = Math.floor(e_daysold);
		e_hrsold = (e_daysold - daysold) * 24;
		hrsold = Math.floor(e_hrsold);
		e_minsold = (e_hrsold - hrsold) * 60;
		minsold = Math.floor((e_hrsold - hrsold) * 60);
		seconds = Math.floor((e_minsold - minsold) * 60);
		if (daysold<0) { 
		      clearTimeout(s_t);return;  
		 } 
		if (daysold<10) {daysold="0"+daysold} 
        if (hrsold<10) {hrsold="0"+hrsold} 
        if (minsold<10) {minsold="0"+minsold} 
        if (seconds<10) {seconds="0"+seconds}
        document.getElementById("s_d").innerHTML = daysold;
        document.getElementById("s_h").innerHTML = hrsold;
        document.getElementById("s_m").innerHTML = minsold;
        document.getElementById("s_s").innerHTML = seconds;
	}
}
s_d_t();

// target[target.length]=new Date(年,月-1,日,时,分,秒).getTime()
target[target.length] = new Date(2010, 05, 11, 22, 00, 00).getTime();