/*
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 = "08/06/2010 07:00 PM";
    BackColor = "";
    Font = "verdana";
    FontSize = "12pt";
    FontWeight = "bold";
    FontColor = "#ffffff";
    CountActive = true;
    CountStepper = -1;
    LeadingZero = true;
    DisplayFormat = "%%D%% DAYS %%H%% HRS %%M%% MINS %%S%% SECS";
    FinishMessage = "";
</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 " &nbsp; &nbsp; " + s + "";
}

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

  document.getElementById("cntdwn").innerHTML = DisplayStr;
  if (CountActive)
    setTimeout("CountBack(" + (secs+CountStepper) + "," + SetTimeOutPeriod+ ")", SetTimeOutPeriod);
}

function putspan(BackColor,FontColor,FontSize,FontWeight,FontColor) 
{
 document.write("<span id='cntdwn' style='background-color:" + BackColor + "; font-family:" + Font + "; font-size:" + FontSize + "; font-weight:" + FontWeight + "; color:" + FontColor + ";'></span>");
}

function ShowCountDownTimer(targetdate)
{

    if (typeof(BackColor)=="undefined")
      BackColor = "";
    if (typeof(Font)=="undefined")
      Font = "verdana";
    if (typeof(FontSize)=="undefined")
      FontSize = "12pt";
    if (typeof(FontWeight)=="undefined")
      FontWeight = "bold";
    if (typeof(FontColor)=="undefined")
      FontColor= "white";
    if (typeof(TargetDate)=="undefined")
      TargetDate = targetdate;
    if (typeof(DisplayFormat)=="undefined")
      DisplayFormat = "%%D%% DAYS %%H%% HRS %%M%% MINS %%S%% SECS";
    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,FontColor,FontSize,FontWeight,FontColor);
    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,SetTimeOutPeriod);

}