var timerID = null;
	var timerRunning = false;
	function showtime() 
	{
		today = new Date();
		BigDay = new Date("March 28, 2011 12:06:00 GMT+2");
	if((BigDay.getTime() - today.getTime()) <= 0)
	{	 

		BigDay.setTime(BigDay.getTime() + 10 *24*60*60*1000)
	}
		msPerDay = 24 * 60 * 60 * 1000 ;
		timeLeft = (BigDay.getTime() - today.getTime());

		e_daysLeft = timeLeft / msPerDay;
		daysLeft = Math.floor(e_daysLeft);
		e_daysLeft = timeLeft / msPerDay;
		daysLeft = Math.floor(e_daysLeft);

		e_hrsLeft = (e_daysLeft - daysLeft)*24;
		hrsLeft = Math.floor(e_hrsLeft);
		minsLeft = Math.floor((e_hrsLeft - hrsLeft)*60);
		hrsLeft = hrsLeft;
		e_minsLeft = (e_hrsLeft - hrsLeft)*60;
		secLeft = Math.floor(e_hrsLeft);
		secLeft = Math.floor((e_minsLeft - minsLeft)*60);
		secLeft = secLeft;
	
	Temp='Akce končí za: '+daysLeft+' dní '+hrsLeft+' hod. '+minsLeft+' min. '+secLeft+' s'
	var myTextField = document.getElementById('cas');
	myTextField.value = Temp;
	

	timerID = setTimeout("showtime()",1000);
	timerRunning = true;
	}

var timerID = null;
var timerRunning = false;
function stopclock () {
if(timerRunning)
clearTimeout(timerID);
timerRunning = false;
}

function stopClock() {
        stopclock();    
        return;
}

function startclock () {
stopclock();
showtime();
}