function countdown_start(year, month, day, hour, minute, format)
{
	countdown(year, month, day, hour, minute, format);                
}
         
function countdown(year, month, day, hour, minute, format)
{
	Today = new Date();
	Todays_Year = Today.getYear() - 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.
	    document.all.countdown.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 ='';

	    if (document.all.countdown)
	    {
	    	document.all.countdown.innerHTML = days;
	    }
	    break;
	default: 
	    document.all.countdown.innerHTML = Time_Left + ' seconds';
	}

	//Recursive call, keeps the clock ticking.
	setTimeout('countdown(' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ',' + format + ');', 1000);
}