OverlayMask migrating to YUI 3.1, removing over-riding of the Overlay _afterVisibleChange method
OverlayMask migrating to YUI 3.1, removing over-riding of the Overlay _afterVisibleChange method

git-svn-id: eaac6977d0b6fa3343c402860739874625caf655@43395 05bdf26c-840f-0410-9ced-eb539d925f36

giros/alloy-ui,giros/alloy-ui,giros/alloy-ui,giros/alloy-ui