function countdown_clock(year, month, day, hour, minute, format)
{
	html_code = '<div id="countdown"></div>';
	document.write(html_code);
	countdown(year, month, day, hour, minute, format);				   
}
		 
function countdown(year, month, day, hour, minute, format)
{
	// Initialise some of our objects.
	Today = new Date();
	Todays_Year = Today.getFullYear() - 2000;
	Todays_Month = Today.getMonth() + 1;				   
	 
	//Convert both today's date and the target date into miliseconds.
	Todays_Date = (new Date(Todays_Year, Todays_Month, Today.getDate(), Today.getHours(), Today.getMinutes(), Today.getSeconds())).getTime();								   
	Target_Date = (new Date(year, month, day, hour, minute, 00)).getTime();				  
	 
	//Find their difference, and convert that into seconds.				  
	Time_Left = Math.round((Target_Date - Todays_Date) / 1000);
	 
	if(Time_Left < 0)
	{
		Time_Left = 0;
	}
	 
	switch(format)
	{
		case 0:
				//The simplest way to display the time left.
				mydiv = document.getElementById('countdown');
				mydiv.innerHTML = Time_Left + ' seconds';
				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 = 's'; hps = 's'; mps = 's'; sps = 's';
				
				//ps is short for plural suffix.
				if(days == 1) dps ='';
				if(hours == 1) hps ='';
				if(minutes == 1) mps ='';
				if(seconds == 1) sps ='';
			
				mydiv = document.getElementById('countdown');
			
				mydiv.innerHTML = days + ' day' + dps + ' ';
				mydiv.innerHTML += hours + ' hour' + hps + ' ';
				mydiv.innerHTML += minutes + ' minute' + mps + ' and ';
				mydiv.innerHTML += seconds + ' second' + sps;
				mydiv.innerHTML += ' until Race Day';
				break;
		default: 
				mydiv = document.getElementById('countdown');
				mydiv.innerHTML = Time_Left + ' seconds';
	}
	   
	//Recursive call, keeps the clock ticking.
	setTimeout('countdown(' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ',' + format + ');', 1000);
}