Need AJAX drop downs incorporated onto front page of oscommerce

I have an AJAX search engine backed by SQL. At current this is a seperate page, with 3 drop down menus. I need this incorporated onto the front of my store, I already have a photoshop design of what I would like the search system to look like - and should then forward through to the respective pages as normal. PM me for details on the AJAX drop down and the design i have.