Need help with build your own feature for a website

This is a very simple project. We are looking for assistance with build your own feature for our website. Part of the code is attached with this project. We basically need someone to figure out the functionality of the rest of it. 9 buttons are attached to this project. We need another set of 9 buttons (which will be provided) that toggle 9 different elements into the same area as the first set. So the two toggled sets of elements should overlay each other (they will be png files) Ultimately, the effect will look similar to customize your own car on the Mercedez website where you can select a color & select a wheel. The two elements will be placed in the same area as transparent png files. [login to view URL] Basically this can be done separately, but we want those 2 elements to be on one page. Graphics will be provided. Thank you.