Java script

I am wanting to add a count down function to my forum, how do i go about doing that? Mind you it is in Javascript form.

<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>

is what i want to add.

add this script in an html page, go to administration panel and create a html page then create widged and call that html page in iframe

That is not a code. It is incomplete. Try to search on Google "Countdown Code" to find better ones or you can try this:

http://www.ricocheting.com/js/countdown.html

BEST REGARDS
GUNHACK X