I'm building a site to support a very large outline of legal cases. There are thousands of nodes in the outline, each with a very small amount of text. The outline is about 5 or 6 levels deep. I've written some code to import the outline into the book module. So the book hierarchy reflects the outline and the node bodies contain these small chunks of text. I'd like to display the entire outline in a single page. This is not practical because of the overall size. Still I'd like the user to feel as if they are scrolling through the entire thing, not visiting thousands of different pages. My idea is to use AJAX to accomplish this. Imagine how google maps works (start somewhere but scroll to anywhere, use ajax to refresh the view after the scroll). I'd like the same thing for arbitrary HTML. In other words the browser starts with mostly placeholder divs and a small amount of content. As the user scrolls around, the placeholders get replaced with real content. And the real content which scrolls out of view gets cleaned up so the browser does not run out of memory. Has anyone encountered such a thing? Or would be interested in collaborating on it? Any reason why it would not work? Thanks, -Dave