function countdown(){
	var targetDate = new Date('02/24/2012'),currentDate = new Date();
	var SysSecond = (targetDate.getTime() - currentDate.getTime())/1000 + 2;	
	var interval_id = setInterval(timeCount,1000);	

	function timeCount() {		
		if (SysSecond > 0) {
				SysSecond--
				var second = Math.floor(SysSecond % 60);
				var minite = Math.floor((SysSecond / 60) % 60);
				var hour = Math.floor((SysSecond / 3600) % 24);
				var day = Math.floor((SysSecond / 3600) / 24);

				$('#countdown .days').html(day);
				$('#countdown .hours').html(hour);
				$('#countdown .minutes').html(minite);
				$('#countdown .seconds').html(second);				
			} else {
				clearInterval(interval_id);
		}
	};
	timeCount();
}