I need to be able to create a set of categories which can be accessed in a dropdown menu when the CMS user adds items (products in this case), to their database. I know how to do this, but I also need to be able to create a set of subcategories as well, which are also accessible in a dropdown list. I wouldn't mind if they were all on the same list as long as they were grouped by their parent category.
Ideally, it would be a dynamic javascript driven list which would populate itself based on their selection of categories.
How would I accomplish this? To see where I'm going with this, take a look at
http://www.sharberoil.com/products_services.php. The product subcategories, for instance, are things like BF Goodrich, Cooper Tires, etc.
When I get through, this text will link to a page showing a list of products that are all related. The user will then be able to click onto a product to see detailed information, including a photo, description, etc.
How would I go about this? Any insight would be greatly appreciated.