I need a side box that has one drop down menu for category, and a separate drop down menu for sub-category as seen here on the left column:
www.vividracing.com

The only side boxes I could find were for exploded tree views of category and sub-category. This is for an automotive website with tons of categories and sub-categories, so that menu system is not an option.

Any help finding the right menu will be GREATLY appreciated!
Thanks in advance.