function calcage(secs, num1, num2) 
{
  var s = ((Math.floor(secs/num1))%num2).toString();
  if (LeadingZero && s.length < 2)
  {
	s = "0" + s;
  }
  return s;
}

function CountBack(secs) 
{
  if (secs < 0) 
  {
    document.getElementById("cntdwn").innerHTML = FinishMessage;
    return;
  }
  DisplayStr = DisplayFormat.replace(/%%D%%/g, '<div id="days">'+calcage(secs,86400,100000)+'</div>');
  DisplayStr = DisplayStr.replace(/%%H%%/g, '<div id="cd"><span id="hours">'+calcage(secs,3600,24)+'</span>');
  DisplayStr = DisplayStr.replace(/%%M%%/g, '<span id="mins">'+calcage(secs,60,60)+'</span>');
  DisplayStr = DisplayStr.replace(/%%S%%/g, '<span id="secs">'+calcage(secs,1,60)+'</span></div>');

/* days = DisplayFormat.replace(/%%D%%/g, calcage(secs,86400,100000));
  hours = DisplayStr.replace(/%%H%%/g, calcage(secs,3600,24));
  mins = DisplayStr.replace(/%%M%%/g, calcage(secs,60,60));
  secs = DisplayStr.replace(/%%S%%/g, calcage(secs,1,60));
*/
  document.getElementById("cntdwn").innerHTML = DisplayStr;
  
  if (CountActive)
    setTimeout("CountBack(" + (secs+CountStepper) + ")", SetTimeOutPeriod);
}

function putspan(backcolor, forecolor) {
 document.write("<span id='cntdwn' style='background-color:" + backcolor +"; padding-left:125px; color:" + forecolor + "'></span>");
}

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 = "";
if (typeof(CountStepper)!="number")
  CountStepper = -1;
if (typeof(LeadingZero)=="undefined")
  LeadingZero = true;


CountStepper = Math.ceil(CountStepper);
if (CountStepper == 0)
  CountActive = false;
var SetTimeOutPeriod = (Math.abs(CountStepper)-1)*1000 + 990;
putspan(BackColor, ForeColor);
var dthen = new Date(TargetDate);
var dnow = new Date();
if(CountStepper>0)
  ddiff = new Date(dnow-dthen);
else
  ddiff = new Date(dthen-dnow);
gsecs = Math.floor(ddiff.valueOf()/1000);
CountBack(gsecs);