As Facebook announced to support the iframe for page tabs also. http://developers.facebook.com/blog/post/462
I have an existing facebook app built on FBML, and it was working fine until i changed the settings to use the iframe in page tabs. My app uses FBJS for scripting.
But, now after changing the settings, i noticed FBJS doesn't work with iframe page tabs.
Does anyone facing the similar issue?
-Imran
I don't know if there's a point in answering a question this old, but I'm fairly certain that you need to replace your FBJS with plain old JavaScript when you switch from FBML to IFRAME.