Thanks Kresimi.
and for others who might ask how it is being done,
It is simply done by making a js file with code to override the method in the original responsible for formatting..
(which I actually modified instead of creating a separate file)..
then the order of file include is
<script type="text/javascript" language="javascript" src="scripts/calendar_date_select/calendar_date_select.js"></script>
<script type="text/javascript" language="javascript" src="scripts/calendar_date_select/format_iso.js"></script>
and that's it.
for my purpose, I have added this method:
Date.zeroTrail = function(x){r = (x.toString().length>1) ? x:"0"+x;return r;}
it will ensure the date is two digits
[01,02,03...,10,11, etc]
and of course used it on the line for displaying the date
str = Date.zeroTrail(this.getDate()) + "/" + Date.zeroTrail((this.getMonth() + 1)) + "/" + this.getFullYear();
hope someone will find it useful.
thanks again for the fast reply.
Hussain