full screen mode hides ediff control frame

[Joe Riel]

I start emacs in full-screen mode, mainly to remove
any border so as to get maximum screen area.
When ediff is started, the separate control frame
is behind the main emacs frame, so I need to M-tab 
to it, which is a mild annoyance.  Is there a simple
way to move it the front automatically?

-- 
Joe Riel