Automatically pick next bussiness day

Hi,
I’m not too experienced in this field but I know some.
I’m fixing up an eCommerce website and I want to add an feature - that on top of the add to cart button it should say let’s say it’s sunday “Orders placed now will ship monday” like this website http://robertscamera.com/photo/point-and-shoots/touchscreen/coolpix-s4000.html it should always write the next bussiness day.
I started something but it’s not close to what I want:

<html>
<body>

<script type=“text/javascript”>

var d=new Date();
var weekday=new Array(7);
weekday[0]=“Sunday”;
weekday[1]=“Monday”;
weekday[2]=“Tuesday”;
weekday[3]=“Wednesday”;
weekday[4]=“Thursday”;
weekday[5]=“Friday”;
weekday[6]=“Saturday”;

document.write("Orders placed now will ship " + weekday[d.getDay()]);

</script>

</body>
</html>

Thanks.
Hersh.

If this isn’t a homework exercise, there are a couple of other issues you might need to consider as well.

  1. What if Monday is a public holiday?

  2. This is probably better done server side because it won’t work in browsers where javascript is disabled for some reason

I’ve got this http://blog.agilelogicsolutions.com/2010/02/get-business-day-in-javascript.html
but I just don’t know how to fit it in to work

ok, so it looks like this is a homework exercise of some kind and not a “real world” application.