Verify before page refresh or back - is there a way?

[eluser]Barwick[/eluser]
Typically, I would agree 100%. But this would only be used on a wizard-campaign builder type of thing - which the entire page is all Ajax. Just testing the application I've hit the back button myself a couple times by mistake lol. So an "Are you sure you want to exit?" message or pop-up is a good way to remind/prevent. My thoughts anyways...