custom oscomerce module

This is oscommerce [login to view URL] See on the side where it says "Select Fountains by:" I have that as a included php module file that needs programing done to it, we need to build in the filter by price as well as the material, size which should use the product extra fields contrib that we already have installed in the store, you can see on the product pages how the product extra fields are showing [login to view URL] see where it says: Material: Stone Size: Small This module should only show when in store categories and it should submit and filter according to what category they are in. The options material, size etc should come out in real time based on the defined product extra fields and should only come out if those product extra fields are assigned to any products in there current category. I already have the php file ready for you to begin work on other then altering that file and [login to view URL] or [login to view URL] I don't believe you will have to change any further files. Probably best to use the [login to view URL] script since it already has sort by price as well as search within categories [login to view URL] plus it already outputs products using [login to view URL] Also note they should be able to select multiple checkboxes to return results If you know of a better way or perhaps you have already created something like this you can implement please let me know your thoughts in pm. Thanks