function ulticountdown(time, id, format, keepCounting){
		if (!document.getElementById("counter"+ id)){
			alert('Het element \'counter' + id + '\' bestaat niet!');
		}
		else{
			timeleft = time;
			var countUp = false;
			if (timeleft < 0) {
				if (keepCounting == 0) {
					timeleft = 0;
				}
				else {
					timeleft *= -1;
					countUp = true;
				}
			}
			seconds = timeleft%60;
			timeleft -= seconds;
			timeleft = timeleft/60;
			minutes = timeleft%60;
			timeleft -= minutes;
			timeleft = timeleft/60;
			hours = timeleft%24;
			timeleft -= hours;
			days = timeleft/24;
			var counterstring = '';
			
			if (format == 1) {
				if (days != 0) {
					counterstring = days+" dag";
					if (days != 1) {
						counterstring = counterstring + "en";
					}
				}
				if (hours != 0) {
					counterstring = counterstring+" "+hours+" u";
					if (hours < 2) {
						counterstring = counterstring + "ur";
					}
					else{
						counterstring = counterstring + "ren";
					}
				}
				if (minutes != 0) {
					counterstring = counterstring+" "+minutes+" minu";
					if (minutes< 2) {
						counterstring = counterstring + "ut";
					}
					else{
						counterstring = counterstring + "ten";
					}
				}
				counterstring = counterstring+" "+seconds+" seconde";
				if (seconds != 1) {
					counterstring = counterstring + "n";
				}
			}
			else if (format == 2) {
				if (days != 0){
					counterstring = days + " dag";
					if (days != 1){
						counterstring += "en";
					}
				}
				if (hours != 0) {
					counterstring += " "+hours+" u";
					if (hours < 2){
						counterstring += "ur";
					}
					else{
						counterstring += "ren";
					}
				}
				if (minutes != 0) {
					counterstring += " "+minutes+" minu";
					if (minutes < 2){
						counterstring += "ut";
					}
					else{
						counterstring += "ten";
					}
				}
			}
			else if (format == 3) {
				if (days != 0) {
					counterstring = days+" dag";
					if (days != 1)
						counterstring += "en";
				}
				counterstring += " "+hours+" u";
				if (hours < 2)
					counterstring += "ur";
				else
					counterstring += "ren";
			}
			else if (format == 4) {
				counterstring = days+" dag";
				if (days != 1)
					counterstring += "en";
			}
			else if (format == 5) {
				if (days != 0) {
					counterstring = days+" dag";
					if (days != 1)
						counterstring += "en";
				}
				counterstring += " "+hours+":"+minutes+":"+seconds;
			}
			else if (format == 6) {
				counterstring = days;
			}
			else{
		
				// we should never get here, but for safety add the last one as default case.
				var counterstring = days+" day";
				if (days != 1)
					counterstring += "s";
				counterstring += " "+hours+":"+minutes+":"+seconds;
			}
		
			var newdiv = document.createElement("div");
			newdiv.innerHTML = counterstring;
			var olddiv = document.getElementById("counter"+ id);
			var parent = olddiv.parentNode;
			parent.removeChild(olddiv);
			newdiv.id = "counter"+id;
			parent.appendChild(newdiv);
		
		
			if (countUp == true) {
				newtime = time+1;
			} else {
				newtime = time-1;
			}
			setTimeout("ulticountdown("+newtime+",'"+id+"',"+format+")",1000);
		}
	}