function getDayString(days)
{
	switch (days)
	{
	case 1:
		return 'deň';
		break;
	case 2:
	case 3:
	case 4:
		return 'dni';
		break;
	default:
		return 'dní';
	}
}

function getHourString(hours)
{
	switch (hours)
	{
	case 1:
		return 'hodina';
		break;
	case 2:
	case 3:
	case 4:
		return 'hodiny';
		break;
	default:
		return 'hodín';
	}
}

function getMinuteString(minutes)
{
	switch (minutes)
	{
	case 1:
		return 'minúta';
		break;
	case 2:
	case 3:
	case 4:
		return 'minúty';
		break;
	default:
		return 'minút';
	}
}

function getSecondString(seconds)
{
	switch (seconds)
	{
	case 1:
		return 'sekunda';
		break;
	case 2:
	case 3:
	case 4:
		return 'sekundy';
		break;
	default:
		return 'sekúnd';
	}
}

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.
         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)
         {
         Today = new Date();
         Todays_Year = Today.getFullYear() - 2000;
         Todays_Month = Today.getMonth();                  
         
         //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 - 1, day, hour, minute, 00)).getTime();                  
         
         //Find their difference, and convert that into seconds.                  
         Time_Left = Math.abs(Math.round((Target_Date - Todays_Date) / 1000));
                  
         var countdown = document.getElementById('countdown');
         
         switch(format)
               {
               case 0:
                    //The simplest way to display the time left.
                    countdown.innerHTML = Time_Left + ' sekúnd';
                    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;

                    countdown.innerHTML = days + ' ' + getDayString(days) + ' ';
                    countdown.innerHTML += hours + ' ' + getHourString(hours) + ' ';
                    countdown.innerHTML += minutes + ' ' + getMinuteString(minutes) + ' a ';
                    countdown.innerHTML += seconds + ' ' + getSecondString(seconds);
                    break;
               default: 
                    countdown.innerHTML = Time_Left + ' sekúnd';
               }
               
         //Recursive call, keeps the clock ticking.
         setTimeout('countdown(' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ',' + format + ');', 1000);
         }