function cdtime(container, targetdate)
{
	if (!document.getElementById || !document.getElementById(container)) return
		this.container=document.getElementById(container);
		this.currentTime=new Date();
		this.targetdate=new Date(targetdate);
		this.timesup=false;
		this.updateTime();
	}

	cdtime.prototype.updateTime=function()
	{
		var thisobj=this;
		this.currentTime.setSeconds(this.currentTime.getSeconds()+1);
		setTimeout(function(){thisobj.updateTime()}, 1000); //update time every second
	}

	cdtime.prototype.displaycountdown=function(baseunit, functionref)
	{
		this.baseunit=baseunit;
		this.formatresults=functionref;
		this.showresults();
	}

cdtime.prototype.showresults=function()
{
	var thisobj = this;
	var timediff=(this.targetdate-this.currentTime)/1000 //difference btw target date and current date, in seconds
	if (timediff<0)
	{ //if time is up
		this.timesup=true
		this.container.innerHTML=this.formatresults()
		return
	}

	var oneMinute=60 				//minute unit in seconds
	var oneHour=60*60 				//hour unit in seconds
	var oneDay=60*60*24				//day unit in seconds
	var dayfield=Math.floor(timediff/oneDay)
	var hourfield=Math.floor((timediff-dayfield*oneDay)/oneHour)
	var minutefield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour)/oneMinute)
	var secondfield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute))
	
	if (this.baseunit=="hours")
	{ 	//if base unit is hours, set "hourfield" to be topmost level
		hourfield=dayfield*24+hourfield
		dayfield="n/a"
	}
	else if (this.baseunit=="minutes")
	{ 	//if base unit is minutes, set "minutefield" to be topmost level
		minutefield=dayfield*24*60+hourfield*60+minutefield
		dayfield=hourfield="n/a"
	}
	else if (this.baseunit=="seconds")
	{ 	//if base unit is seconds, set "secondfield" to be topmost level
		var secondfield=timediff
		dayfield=hourfield=minutefield="n/a"
	}
		this.container.innerHTML=this.formatresults(dayfield, hourfield, minutefield, secondfield)
		setTimeout(function(){thisobj.showresults()}, 1000) //update results every second
	}


//Use arguments[0] to access "Days" left
//Use arguments[1] to access "Hours" left
//Use arguments[2] to access "Minutes" left
//Use arguments[3] to access "Seconds" left

//The values of these arguments may change depending on the "baseunit" parameter of cdtime.displaycountdown()
//For example, if "baseunit" is set to "hours", arguments[0] becomes meaningless and contains "n/a"
//For example, if "baseunit" is set to "minutes", arguments[0] and arguments[1] become meaningless etc


function formatresults()
{
if (this.timesup==false){//if target date/time not yet met
var displaystring = "Nog "+arguments[2]+" minuten en "+arguments[3]+" seconden";
}
else{ //else if target date/time met
var displaystring='<a href="scorebord.php?matchid=22" class="nodeco"><small class="greentext">Scorebord is LIVE!</small></a>';
}
return displaystring
}