var d1 = new Date();
		//var d2 = new Date(stamp);
		//计算当前时间距结束时间多少秒
		var miao = (Date.parse(d1) - stamp)/1000;
		
		//计算相差多少天
		var day = parseInt(miao/86400);//获得天数
		var hour = parseInt(miao/3600-day*24);//获得小时数
		var minute = parseInt(miao/60-(hour*60+day*1440));//获得分钟数
		if(minute<=60)
			return minute + "分钟之前";
		else if(hour<=24)
			return hour + "小时之前";
		return day + "天之前";