Over the past 5 minutes or so I hacked some AJAX support into HelpSpot just to get a feel for the UI. Man does this make the queue's fly. The Prototype library makes it really easy, plus the way I constructed HelpSpot means I had to change almost no code. However, I'm really running up against the back button issue. I just can't use it the way I want unless I'm able to give users use of the back button. The way HelpSpot works, I really probably only need to let them go back one or two pages since they'll mostly want to use it when going from a request back to the queue they started in. Anyone seen any good techniques for working around this issue?