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

function calcage(secs, num1, num2) {
  var LeadingZero = true;

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

function CountBack(id, secs) {
  var CountActive = true;
  var CountStepper = -1;
  var DisplayFormat = "%%D%% <small>days</small> %%H%% <small>hours</small> %%M%% <small>minutes</small>";

  var SetTimeOutPeriod = (Math.abs(CountStepper)-1)*1000 + 990;

  if (secs < 0) {
    document.getElementById("cntdwn-" + id).innerHTML = 'No Coupons Left!';
    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-" + id).innerHTML = DisplayStr;

  if (CountActive)
    setTimeout("CountBack('" + id + "', " + (secs+CountStepper) + ")", SetTimeOutPeriod);
}

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

function startCountdown(id, tdate, edate, back, fore) {
  var CountStepper = -1;
  var BackColor = back;
  var ForeColor= fore;

  if (CountStepper == 0)
    CountActive = false;

  putspan(id, BackColor, ForeColor);
  var dthen = new Date(tdate);
  var dnow = new Date(edate);
  if(CountStepper>0)
    ddiff = new Date(dnow-dthen);
  else
    ddiff = new Date(dthen-dnow);
  gsecs = Math.floor(ddiff.valueOf()/1000);
  CountBack(id, gsecs);
}