Javascript обратного отсчета шалить стал - Общие вопросы веб разработки

<script type="text/javascript">
var strTargetDate = "28/02/2014 12:00 AM";
var strFormat = "$DAYS$";
var strExpired = "Акция закончена";

function doCountDown(seconds) 
{
   if (seconds < 0) 
   {
      document.getElementById("countdown").innerHTML = strExpired;
      return;
   }
   var strMsg = strFormat;
   strMsg = strMsg.replace("$DAYS$",    ((Math.floor(seconds/86400))%100000).toString());
   strMsg = strMsg.replace("$HOURS$",   ((Math.floor(seconds/3600))%24).toString());
   strMsg = strMsg.replace("$MINUTES$", ((Math.floor(seconds/60))%60).toString());
   strMsg = strMsg.replace("$SECONDS$",  ((Math.floor(seconds))%60).toString()); 

   document.getElementById("countdown").innerHTML = strMsg;

   setTimeout("doCountDown(" + (seconds-1).toString() + ")", 1000);
}
function initCountDown()
{
   var dtTarget = new Date(strTargetDate);
   var dtNow = new Date();
   var dtDiff = new Date(dtTarget-dtNow);
   var totalSeconds = Math.floor(dtDiff.valueOf()/1000);

   doCountDown(totalSeconds);
}
initCountDown();
</script>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Untitled Page</title>
<meta name="generator" content="WYSIWYG Web Builder 9 - http://www.wysiwygwebbuilder.com">
<style type="text/css">
div#container
{
   width: 58px;
   position: relative;
   margin-top: 0px;
   margin-left: auto;
   margin-right: auto;
   text-align: center;
}
body
{
   text-align: center;
   margin: 0;
   background-color: transparent;
   color: #000000;
}
</style>
<style type="text/css">
a
{
   color: #0000FF;
   text-decoration: underline;
}
a:visited
{
   color: #800080;
}
a:active
{
   color: #FF0000;
}
a:hover
{
   color: #0000FF;
   text-decoration: underline;
}
</style>
</head>
<body>
<div id="container">
<div id="wb_timer2" style="position:absolute;left:0px;top:0px;width:57px;height:25px;z-index:0;">
<div style="color:#1F1F1F;font-size:48px;font-family:Trebuchet MS;font-weight:bold;font-style:normal;text-decoration:none" id="countdown"></div>
<script type="text/javascript">
var strTargetDate = "30/01/2014 12:00 AM";
var strFormat = "$DAYS$";
var strExpired = "Акция закончена";

function doCountDown(seconds) 
{
   if (seconds < 0) 
   {
      document.getElementById("countdown").innerHTML = strExpired;
      return;
   }
   var strMsg = strFormat;
   strMsg = strMsg.replace("$DAYS$",    ((Math.floor(seconds/86400))%100000).toString());
   strMsg = strMsg.replace("$HOURS$",   ((Math.floor(seconds/3600))%24).toString());
   strMsg = strMsg.replace("$MINUTES$", ((Math.floor(seconds/60))%60).toString());
   strMsg = strMsg.replace("$SECONDS$",  ((Math.floor(seconds))%60).toString()); 

   document.getElementById("countdown").innerHTML = strMsg;

   setTimeout("doCountDown(" + (seconds-1).toString() + ")", 1000);
}
function initCountDown()
{
   var dtTarget = new Date(strTargetDate);
   var dtNow = new Date();
   var dtDiff = new Date(dtTarget-dtNow);
   var totalSeconds = Math.floor(dtDiff.valueOf()/1000);

   doCountDown(totalSeconds);
}
initCountDown();
</script>

</div>

</div>
</body>
</html>

var strTargetDate = "Mon Feb 05 2015 19:29:49 GMT+0400 (MSK)"