function showtime(txt_control, year, month, day, hour, minute, second) 
{
	Today = new Date();
	var NowHour = Today.getHours();
	var NowMinute = Today.getMinutes();
	var NowMonth = Today.getMonth();
	var NowDate = Today.getDate();
	var NowYear = Today.getYear();
	var NowSecond = Today.getSeconds();
	if (NowYear <2000)
		NowYear=1900+NowYear;
	Today = null;
	Hourleft = hour - NowHour
	Minuteleft = minute - NowMinute
	Secondleft = second - NowSecond
	Yearleft = year - NowYear
	Monthleft = month - NowMonth - 1
	Dateleft = day - NowDate
	if (Secondleft<0)
	{
		Secondleft=60+Secondleft;
		Minuteleft=Minuteleft-1;
	}
	if (Minuteleft<0)
	{
		Minuteleft=60+Minuteleft;
		Hourleft=Hourleft-1;
	}
	if (Hourleft<0)
	{
		Hourleft=24+Hourleft;
		Dateleft=Dateleft-1;
	}
	if (Dateleft<0)
	{
		Dateleft=31+Dateleft;
		Monthleft=Monthleft-1;
	}
	if (Monthleft<0)
	{
		Monthleft=12+Monthleft;
		Yearleft=Yearleft-1;
	}
	if (Yearleft < 0 || Monthleft < 0)
	{
		str=''
	}else if (Dateleft > 0)
	{
		str='还剩 '+Dateleft+'天'+Hourleft+'小时'
	}else if(Hourleft > 0)
	{
		str='还剩 '+Hourleft+'小时'+Minuteleft+'分'
	}else if(Minuteleft > 0)
	{
		str='还剩 '+Minuteleft+'分'+Secondleft+'秒'
	}else if (Secondleft > 0)
	{
		str='还剩 '+Secondleft+'秒'
	}else
	{
		str=''
	}
	$('#'+txt_control).html(str); 
	setTimeout("showtime(\""+txt_control+"\","+year+","+month+","+day+","+hour+","+minute+","+second+")", 1000);
}