Topic: Undisable submit after timeout
Opera browser has feature called DOM cache. It completly preserves state of page when user goes back in history.
The problem is that punBB disables submit button. Because of that user is unable to go back, correct form and re-submit, because button stays disabled forever.
Solution to this is to add timeout that activates submit button again (this must be timeout, it can't be done in onload event).