jQuery plugin: display pages and sub-page navigation?

I’m looking for a jQuery plugin for a popup box which can display content from a page with a sidebar for the sub-pages. I want to be able to navigate a page and all of it’s sub-pages from one popup. Each main page can use different popups.

I’ve been searching, but I can’t find what I am looking for. Which, of course, it might be obvious and I’m just not getting it.