function countdown_clock(year, month, day, hour, minute, format)
{
	 //I chose a div as the container for the timer, but
	 //it can be an input tag inside a form, or anything
	 //who's displayed content can be changed through
	 //client-side scripting.
	var b_version=navigator.appVersion;
	var version=parseFloat(b_version);
	
	if(navigator.appName != "Microsoft Internet Explorer")
	{
	 html_code = '<div id="countdown" class="countdown"></div>';

	 document.write(html_code);
	 
	 countdown(year, month, day, hour, minute, format);                
	}
	
	if(navigator.appName == "Microsoft Internet Explorer")
	{
	 html_code = '<div id="countdown" class="countdown"></div>';

	 document.write(html_code);
	 
	 countdown2(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;
	  
	todayEpoch  = Today.getTime();
	target = new Date("22 May, 2009"); 
	targetEpoch = target.getTime();
	daysLeft = Math.floor(((targetEpoch - todayEpoch)/(60*60*24))/1000);
	 
	 switch(format)
		   {
			   case 0:
					//The simplest way to display the time left.
					document.getElementById('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 ='';
					
					document.getElementById('countdown').innerHTML = daysLeft + ' day' + dps + ' ';
					document.getElementById('countdown').innerHTML += hours + ' hour' + hps + ' ';
					document.getElementById('countdown').innerHTML += minutes + ' minute' + mps + ' and ';
					document.getElementById('countdown').innerHTML += seconds + ' second' + sps + ' till';
					break;
				default: 
					document.getElementById('countdown').innerHTML = Time_Left + ' seconds';
			}
               
	//Recursive call, keeps the clock ticking.
	setTimeout('countdown(' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ',' + format + ');', 1000);
}

function countdown2(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;
	  
	todayEpoch  = Today.getTime();
	target = new Date("22 May, 2009"); 
	targetEpoch = target.getTime();
	daysLeft = Math.floor(((targetEpoch - todayEpoch)/(60*60*24))/1000);
	 
	 switch(format)
		   {
			   case 0:
					//The simplest way to display the time left.
					document.getElementById('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 ='';
					
					document.getElementById('countdown').innerHTML = daysLeft + ' day' + dps + ' till';
					break;
				default: 
					document.getElementById('countdown').innerHTML = daysLeft + ' day' + dps + ' till';
			}
               
	//Recursive call, keeps the clock ticking.
	//setTimeout('countdown(' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ',' + format + ');', 1000);
}