Confirming your users choice to navigate away from a node edit form.
Frank:
I know it is typically poor form to prevent a user from leaving a page with an annoying javascript popup, but sometimes it is exactly what you need. If you have an inexperienced editorial staff working under deadline, sometimes they are going 1000mph and do things that they later regret, one of which is leaving a node edit form before they have actually saved their edits. It’s pretty easy to do and can be very unobtrusive when done correctly.

