How to create a cascade dropdown menu in a sharepoint list

I have a deparment's list and a category's list.
I have a look up field for the department that gets all of the departments in the department's list.
I would like to have a choice field that will get populated according to the department.

departments list looks like:

Categories list looks like:
Department                    Category
IS                                   Network Issue
IS                                   Datawarehouse
HR                                 New Hire
HR                                 Benefits
Can this be acomplished using content types?
I appreciate your input or any suggestions you might have.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Not OOTB.  You will have to write some javascript, write some c#, download something from codeplex or purchase something.

I would look at the codeplex approach

or writing c#

The javascript approach is pretty nasty and I would advise against it.  

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
arnulfoespiAuthor Commented:
This soulution works like a charm!
Exactly what I was looking for.
Thanks for the input.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SharePoint

From novice to tech pro — start learning today.