Date Calculator For Webpage

Hello,

I am looking for a date calculator that will allow the user to input one of the following:

30,60,90,120,240,360

The calculator should take the current date and add the user's input and return the calculated future date (does not need to show the time).

I think I also saw a script that calculated the actual number of business days (less weekends and holidays) between today and a future date.

Could these functions be combined into a single script? If so, where might I find a script like this? Any assistance would be greatly appreciated!

:D

I'm guessing you're looking for this? http://jonc101.tripod.com/JavaPlay/dateCalc/