/*
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.";
FinishMessage = "It is finally here!";
</script>
<script language="JavaScript" src="http://scripts.hashemian.com/js/countdown.js"></script>
*/

/* 
	CHANGE COUNTDOWN HERE 
*/

var SetTimeOutPeriod;

function calcage(secs, num1, num2) {
  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;
		setCountdown()
    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);
}


window.onload = function() {
	setCountdown();
}

function setCountdown() {
	var d = new Date();
	
	TargetDate = "01/0" + getDayDifference() + "/" + d.getFullYear() + " " + d.getHours() + ":" + d.getMinutes() + ":" + d.getSeconds();
	CountActive = true;
	CountStepper = -1;
	LeadingZero = true;
	DisplayFormat = "Noch: %%D%%T %%H%%Std %%M%%Min %%S%%Sek";
	FinishMessage = "";

	SetTimeOutPeriod = (Math.abs(CountStepper)-1)*1000 + 990;
	var dnow = new Date(TargetDate);
	var dthen = new Date("01/08/" + d.getFullYear() + " 16:00:00");
	
	ddiff = new Date(dthen-dnow);
	
	gsecs = Math.floor(ddiff.valueOf()/1000);
	CountBack(gsecs);
}

function getDayDifference() {
	var d = new Date();
	var weekday = parseInt(d.getDay());

	/*
		<= 4...till thursday
		
		+1 because year starts at day 1 :)
	*/
	
	if (weekday == 4 && d.getHours() >= 16)
		return 1;
	if (weekday <= 4) {
		return 7 - (4 - weekday) + 1
	}
	else 
		return 7 - (11 - weekday) + 1

}