Hi fellas,
I am trying to build a e-commerce site. The site is for the sale of football uniforms. The owner wants the buyer to be able to design custom jerseys, pants, and the lettering by being able to to click a drop down menu and making a selection. example:

http://www.donalleson.com/uniform/football/index.php

I'm sure it's pretty simple, but if someone could point me in the right direction it would be a big help.

Thanks