/*
Author: Robert Hashemian
http://www.hashemian.com/

You can use this code in any manner so long as the author's
name, Web address and this disclaimer is kept intact.
********************************************************
Usage Sample:

<script language="JavaScript">
TargetDate = "12/31/2020 5:00 AM";
BackColor = "palegreen";
ForeColor = "navy";
CountActive = true;
CountStepper = -1;
LeadingZero = true;
DisplayFormat = "%%D%% %%Days%%, %%H%% %%Hours%%, %%M%% %%Minutes%%, %%S%% %%Seconds%%.";
DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds.";
FinishMessage = "It is finally here!";
</script>
<script language="JavaScript" src="http://scripts.hashemian.com/js/countdown.js"></script>
*/

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

function CountBack(secs) {
  if (secs < 0) {
    document.getElementById("cntdwn").innerHTML = FinishMessage;
    return;
  }
  DisplayStr = DisplayFormat.replace(/%%Lights%%/g, "<b>Lights turn on in </b>");
  //DisplayStr = DisplayFormat.replace(/%%Lights%%/g, "<b>Christmas is in </b>");*/
  //DisplayStr = DisplayFormat.replace(/%%Lights%%/g, "<b>Lights turn out in </b>");
  DisplayStr = DisplayStr.replace(/%%D%%/g, calcage(secs,86400,100000));
  var days = ((Math.floor(secs/86400))%100000);
  if (days==1)
  {
  	DisplayStr = DisplayStr.replace(/%%Days%%/g, "Day");
  }
  else
  {
  	DisplayStr = DisplayStr.replace(/%%Days%%/g, "Days");
  }

  DisplayStr = DisplayStr.replace(/%%H%%/g, calcage(secs,3600,24));
  var hours = ((Math.floor(secs/3600))%24);
  if (hours==1)
  {
    	DisplayStr = DisplayStr.replace(/%%Hours%%/g, "Hour");
  }
  else
  {
  	DisplayStr = DisplayStr.replace(/%%Hours%%/g, "Hours");
  }
  
  DisplayStr = DisplayStr.replace(/%%M%%/g, calcage(secs,60,60));
  var minutes = ((Math.floor(secs/60))%60)
  if (minutes==1)
  {
  	DisplayStr = DisplayStr.replace(/%%Minutes%%/g, "Minute");
  }
  else
  {
  	DisplayStr = DisplayStr.replace(/%%Minutes%%/g, "Minutes");
  }
  
  DisplayStr = DisplayStr.replace(/%%S%%/g, calcage(secs,1,60));
  var seconds = ((Math.floor(secs/1))%60);
  if (seconds==1)
  {
  	DisplayStr = DisplayStr.replace(/%%Seconds%%/g, "Second");
  }
  else
  {
  	DisplayStr = DisplayStr.replace(/%%Seconds%%/g, "Seconds");
  }	

  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 + 
                "; 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%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds.";
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);