Show post categories tree on left and post content on right (same page)


I’m trying to set up a page where on the left side is a list of post categories and the posts that have been tagged to them (like a tree navigation). Ideally, when a user clicks on a post name (under a category), I would like a div to the right of the tree to populate with the post content. Essentially, so the user doesn’t have to leave the page to view the post.

Any ideas on how this can be accomplished (or known plugins that do this)?


Crickets? Anyone have any ideas?