This framework is just what I've been needing. I'm working on a big tutorial that just used popup windows and relied on the user to find what they needed on the page.

I'm going to start using this and if the OP doesn't add a previous button I'll probably submit something myself.

Well, we didn't think about that when we wrote the library for use in our app. :) Now that you mention it, I think it would be a great addition.