Comparing Items

Hi everybody, this is a short and nice project for real programmers. I have a database where I have some inputs like : Name, Performance 1, Performance 2 etc. They are different companies with some info about them and posted by a hierarchical order. I would like to make users select as much as they want from a list (in a hierarchical order) and then compare them. So if they select 3-4 of them, there should be like a table view with all this fields compared to each other. So if I'm an user of the X company, I would like to see mine compared to the Y company and so on. this is pretty easy for you, as I will do the database and the php code to feed it. I just need the compare part. I prefer people who know ajax, as I would like to have the compare functions with some ajax for better loading. Thank you and good bidding. P.s : I'm getting the project small, but the lowest bid wins. I know this is around 100$, as it takes little time for smo who knows what to do.