function udregn(secs, num1, num2) {
  s = ((Math.floor(secs/num1))%num2).toString();
  if (s.length < 2)
    s = "0" + s;

  if (num1==1) {
  if (s=="01")
    return "<b>" + s + "</b> øjeblik";
  else
    return "<b>" + s + "</b> øjeblikke";
  } else if (num1==60){
  if (s=="01")
    return "<b>" + s + "</b> minut";
  else
    return "<b>" + s + "</b> minutter";
  } else if (num1==3600){
  if (s=="01")
    return "<b>" + s + "</b> time";
  else
    return "<b>" + s + "</b> timer";
  } else if (num1==86400){
  if (s=="01")
    return "<b>" + s + "</b> dag";
  else
    return "<b>" + s + "</b> dage";
  }

  return "<b>" + s + "</b>";
  
}

function CountBack(secs) {
  if (secs < 0) {
    document.getElementById("cntdwn").innerHTML = FinishMessage;
    return;
  }
  DisplayStr = DisplayFormat.replace(/%%D%%/g, udregn(secs,86400,100000));
  DisplayStr = DisplayStr.replace(/%%H%%/g, udregn(secs,3600,24));
  DisplayStr = DisplayStr.replace(/%%M%%/g, udregn(secs,60,60));
  DisplayStr = DisplayStr.replace(/%%S%%/g, udregn(secs,1,60));

  document.getElementById("cntdwn").innerHTML = DisplayStr;
  if (CountActive)
    setTimeout("CountBack(" + (secs-1) + ")", 990);
}

function putspan(backcolor, forecolor) {
 document.write("<span id='cntdwn' style='background-color:" + backcolor + 
                "; color:" + forecolor + "'></span>");
}

if (typeof(BackColor)=="undefined")
  BackColor = "white";
if (typeof(ForeColor)=="undefined")
  ForeColor= "black";
if (typeof(TargetDate)=="undefined")
  TargetDate = "12/31/2020 5:00 AM";
if (typeof(DisplayFormat)=="undefined")
  DisplayFormat = "%%D%%, %%H%%, %%M%%, %%S%%.";
if (typeof(CountActive)=="undefined")
  CountActive = true;
if (typeof(FinishMessage)=="undefined")
  FinishMessage = "";
putspan(BackColor, ForeColor);
var dthen = new Date(TargetDate);
var dnow = new Date();
ddiff = new Date(dthen-dnow);
gsecs = Math.floor(ddiff.valueOf()/1000);
CountBack(gsecs);