How to make this countdown timer auto reset when done?

[hitmanle]

I have this countdown timer script:\[code\]<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 "<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 = "white";if (typeof(ForeColor)=="undefined") ForeColor= "black";if (typeof(TargetDate)=="undefined") TargetDate = "12/27/2012 1:36 PM";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);\[/code\]I want to make it so once the timer reaches 0, it adds 2 days to the original date and resets itself. Here is what I came up with:\[code\]CountStepper = Math.ceil(CountStepper);if (CountStepper == 0) CountActive = true;var SetTimeOutPeriod = (Math.abs(targetdate)-1)*2000 + 990;putspan(BackColor, ForeColor);var dthen = new Date(TargetDate);var dnow = new Date();if(CountStepper>0)CountBack(gsecs);\[/code\]But it doesn't seem to be working. Any help or tips on how to fix this?