/*
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>
*/
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, sCampus, iOffset, bButtonsVisible, sScreen) {
  var oElement = null;
  if (bButtonsVisible == undefined | bButtonsVisible == null) bButtonsVisible = false;
  if (sScreen == undefined | sScreen == null) sScreen = 'index';
  if (iOffset == undefined | iOffset == null) iOffset = 1;
  //we are activating the buttons 15 minutes ahead, when a user presses the actual button, the script executed will look at the database and determine whether the sermon is in progress.
  if (secs < 1) {
    var oElement = $('spanCountdown' + sCampus + 'Desc');
    var oElement2 = $('spanCountdown' + sCampus);
    var oElement3 = $('spanCountdownSpacer' + sCampus);
    if (oElement != undefined && oElement != null) {
      if (sScreen != 'live') {
        oElement.innerHTML = "in progress...<br/><br/>";
      }
      else {
        oElement.innerHTML = "in progress...";
      }
    }
    if (oElement2 != undefined && oElement2 != null) {
      oElement2.style.display = 'none';
    }
    if (oElement3 != undefined && oElement3 != null) {
      oElement3.style.display = 'none';
    }
    oElement = $('div' + sCampus + 'OnButtons');
    oElement2 = $('div' + sCampus + 'OffButtons');
    if (oElement != null && oElement != undefined && oElement2 != null && oElement2 != undefined) {
      oElement2.style.display = 'none';
      oElement.style.display = '';
    }
    return;
  }
  else if (bButtonsVisible == false && secs < iOffset) {
    bButtonsVisible = true;
    var oElement = $('div' + sCampus + 'OnButtons');
    var oElement2 = $('div' + sCampus + 'OffButtons');
    if (oElement != null && oElement != undefined && oElement2 != null && oElement2 != undefined) {
      oElement2.style.display = 'none';
      oElement.style.display = '';
    }
  }

  if (calcage(secs,86400,100000) > 0) {
    DisplayStr = DisplayFormat.replace(/%%D%%/g, calcage(secs,86400,100000));
  }
  else {
    DisplayStr = DisplayFormat.replace(/%%D%% days, /g, "");
  }
  if (calcage(secs,3600,24) > 0) {
    DisplayStr = DisplayStr.replace(/%%H%%/g, calcage(secs,3600,24));
  }
  else {
    DisplayStr = DisplayStr.replace(/%%H%% hours, /g, "");
  }
  if (calcage(secs,60,60) > 0) {
    DisplayStr = DisplayStr.replace(/%%M%%/g, calcage(secs,60,60));
  }
  else {
    DisplayStr = DisplayStr.replace(/%%M%% minutes, /g, "");
  }
  DisplayStr = DisplayStr.replace(/%%S%%/g, calcage(secs,1,60));
  oElement = $('spanCountdown' + sCampus);
  if (oElement != null && oElement != undefined) {
    if (sScreen != "live" && secs < 3600) DisplayStr += "<br/><br/>";
    oElement.innerHTML = DisplayStr;    
  }
  if (CountActive) {
    setTimeout("CountBack(" + (secs+CountStepper) + ", '" + sCampus + "', " + iOffset + ", " + bButtonsVisible + ", '" + sScreen + "')", SetTimeOutPeriod);
  }
}

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