Not sure what to call this :-x

Sorry about the title i relaly couldnt think of what to call it,

anyways what im trying to do is have a page, that has a bunch of css files, filled with codes, theres a dropdown list, they click the title they want to preview, and itll load that css list, as well as change some content in the top table like the link to get the css code, the title of the layout, the layout creators credit, etc etc.
So what would the easiest way be for going about this, I have over 100 “laouyts” (or css codes) that I want to have used, so I do I have ot make 100 different pages, or is it a nice php script to make it easy, or what. Thanks guys.

This is a good example of what I want: