Costruire Siti Web

I'm building a responsive website for spare parts, built with drupal 7 and bootstrap theme. I need some modules, front-end features, etc. here, an example of module that I require now: selecting a vehicle from a form, we arrive at a page in which a tree of product categories will be displayed, through a classic collapse/expand mechanism. There are 2 level of categories: Level A, which contains the sub-categories (collapsed) Level B, of sub-categories, wich contains the final products With a click, the A level category, for example "Filters", will be expanded to show the respective sub-categories (level B), in the same page. With a click on a sub-category, for example "Air Filters", the products will be requested with an ajax call, and displayed in the same page. The development of ajax calls is required, but the db queries will be given. When click on another B level category, for ex. "Fuel Filters", the previus producs will be collapsed and the Fuel Filters Products appear. When click on other A level category, for example "Pumps", the "Filters" category will be collapsed... - the form to select the vehicle is not requested - no theming is requested - the queries will be provided by me