EventHook: handle events after the underlying layout and more
EventHook: handle events after the underlying layout and more

- check the first time the Bool is True
- coding and naming style

darcs-hash:20080224230854-32816-9ae0e111f33f6ea3d4ac1dae76ed4e4fab496742

yzhou61/xmonad-contrib,yzhou61/xmonad-contrib,yzhou61/xmonad-contrib