/*
Countdown Timer
Usage:

<script language="javascript">
BackColor     = "lemonchiffon";
ForeColor     = "maroon";
LeadingZero   = false;
DisplayFormat = "%%D%% Day(s), %%H%% Hour(s), %%M%% Minute(s), %%S%% Second(s)";
CountStepper  = -1;
FinishMessage = "It is finally here!";
TargetDate    = "1/1/2030 12:00 PM";
CountActive   = true;
</script>
<script language="javascript" src="/x/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(/%%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);
}

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

if (typeof(BackColor)     == "undefined")  BackColor     = "lemonchiffon";
if (typeof(ForeColor)     == "undefined")  ForeColor     = "maroon";
if (typeof(LeadingZero)   == "undefined")  LeadingZero   = false;
if (typeof(DisplayFormat) == "undefined")  DisplayFormat = "%%D%% Day(s), %%H%% Hour(s), %%M%% Minute(s), %%S%% Second(s)";
if (typeof(CountStepper)  != "number")     CountStepper  = -1;
if (typeof(FinishMessage) == "undefined")  FinishMessage = "";
if (typeof(TargetDate)    == "undefined")  TargetDate    = "1/1/2030 12:00 PM";
if (typeof(CountActive)   == "undefined")  CountActive   = 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);