function counter() {
	var i;
	var objArray = document.getElementsByTagName("span");
	for (i = 0; i < (objArray.length); i++) {
		if (objArray[i].id.indexOf("tuan_") > -1) {
			id = objArray[i].id.substring(objArray[i].id.indexOf("_") + 1);
			objHid = document.getElementById("hid_" + id);
			var d = Date.parse(objHid.value);
			var today = new Date();
			var time = d - today;
			var datetime = objArray[i];
			if (Math.floor(time) <= 0) {
				datetime.innerHTML = '时间已过,谢谢您的关注!';
			}
			else {
				var tday = Math.floor(time / (1000 * 60 * 60 * 24));
				var thour = Math.floor(time / (1000 * 60 * 60)) % 24;
				var tminute = Math.floor(time / (1000 * 60)) % 60;
				var tsecond = Math.floor(time / 1000) % 60;
				str = tday + "天" + thour + "小时" + tminute + "分" + tsecond + "秒";
				document.getElementById("tuan_" + id).innerHTML = str;

			}
		}
	}
	setTimeout('counter()', 1000);
}
counter();