Amazon/Ebay comparison site (no auction)

I have an Amazon & Ebay (non auction) price comparison site at [login to view URL] (for products shipped to Spain from all eBay sites and Amazon Spain). I require: Translate all text into the languages shown at top of page As a search term needs to be entered to get Amazon results, ensure there are no results loaded on homepage until a search has been made. URL needs to be updated everytime a new selection has been made Replace the "Go" button with "Categories & sub-categories dropdown list" to force the user to search by category at start, and reduce api calls Insert all categories and sub-categories from Amazon and Ebay into database (and map them) Add 3 more sub-categories dropdown lists to the existing dropdown lists (which need to be tied in to results), which are populated depending on which categories are selected at start (with counts of amazon+ebay). Link the 3 existing dropdown boxes, and 3 new sub-category dropdown boxes on the left side of the page to the results (to be autorefreshed) If the sub-category link is clicked within the product row in the results, then that should be the search criteria, and the relevant dropdown box on left of page should be updated. Pagination (with totals) required for results of ebay and amazon. 100 results per page. Sort by total price by default, but ability to reverse the sort order Amazon default sort order by lowest new price