var _countDowncontainer=0;
var _currentSeconds=0; 

function ActivateCountDown(strContainerID, initialValue) {
    _countDowncontainer = document.getElementById(strContainerID);        
	if (!_countDowncontainer) {        
		alert("count down error: container does not exist: "+strContainerID+            "\nmake sure html element with this ID exists");
        return;    
	}        
	SetCountdownText(initialValue);    
	window.setTimeout("CountDownTick()", 1000);
} 
function CountDownTick() {    
	if (_currentSeconds <= 0) {        
		alert("your time has expired!");        
		return;    
	}        
	SetCountdownText(_currentSeconds-1);    
	window.setTimeout("CountDownTick()", 1000);
} 
function SetCountdownText(seconds) {    
	//store:    
	_currentSeconds = seconds;        
	//get minutes:    
	var minutes=parseInt(seconds/60);        
	//shrink:   
	 seconds = (seconds%60);        
	 //get hours:    
	 var hours=parseInt(minutes/60);        
	 //shrink:   
	 minutes = (minutes%60);   
	//get days
	var days = parseInt(hours/24);
	hours = (hours%24)
	 //build text:    
	 //var strText = AddZero(days) + ":" + AddZero(hours) + ":" + AddZero(minutes) + ":" + AddZero(seconds);  
		var strText = '<span id="daysCountDown">' + AddZero(days) + '</span>d, <span id="hoursCountDown">' + AddZero(hours) + '</span>h <span  id="minutesCountDown">' + AddZero(minutes) + '</span>m <span id="secondsCountDown">' + AddZero(seconds) + '</span>s'
	 //apply:    
	 _countDowncontainer.innerHTML = strText;
 } 
 function AddZero(num) {    
	 return ((num >= 0)&&(num < 10))?"0"+num:num+"";
}