I'm quite new to using jQuery, so i'm hoping someone will be able to help with what i hope is just a simple question!

Basically, I'm working on a site that has a search at the top. Search consists of 2 select boxes, one for counties and then another for towns. These currently pull their data from a MySQL database. What I'd like to do is once the user has selected a county, the second select box would populate with the towns in that county. All data should be pulled from the database.

I'm not sure where to look for code examples, so i'm hoping someone can help!

:-)