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function remaintime(TimeLeft, format)

{

     html_code = '<div id="countdown"></div>';

     document.write(html_code);

     countdown(TimeLeft, format);                

}

function countdown(Time_Left, format)

{

	TimeLeft=Time_Left;

	if(Time_Left < 0)

	{

	    window.location.reload();

	}

	

	switch(format)

	{

		case 0:

			//The simplest way to display the time left.

			document.all.countdown.innerHTML = Time_Left + ' giây';

			break;

		case 1:

			//More datailed.

			

			days = Math.floor(Time_Left / (60 * 60 * 24));

			Time_Left %= (60 * 60 * 24);

			hours = Math.floor(Time_Left / (60 * 60));

			Time_Left %= (60 * 60);

			minutes = Math.floor(Time_Left / 60);

			Time_Left %= 60;

			seconds = Time_Left;

			

			dps = ''; hps = ''; mps = ''; sps = '';

			//ps is short for plural suffix.

			if(days == 1) dps ='';

			if(hours == 1) hps ='';

			if(minutes == 1) mps ='';

			if(seconds == 1) sps ='';

			

			a = '';

			a = days + ' ngày' + dps + ' ';

			a += hours + ' giÝ' + hps + ' ';

			a += minutes + ' phút' + mps + ' ';

			a += Math.round(seconds) + ' giây' + sps;

			document.getElementById('countdown').innerHTML = a;

			break;

		default: 

			document.all.countdown.innerHTML = Time_Left + ' giây';

	}					

	setTimeout("countdown(" + (TimeLeft-1) +","+format+ ")", 1000);		

}