Layer > Defringe...
and choose your pixel width. Useless of course if it's not a cut out element on a transparent layer
(
Pasanonic 's been known to cause insanity in laboratory mice,
Fri 7 Oct 2011, 17:09,
archived)
ignore me.
Just checked CS5 and it appears to have moved somewhere else
(
Pasanonic 's been known to cause insanity in laboratory mice,
Fri 7 Oct 2011, 17:10,
archived)