I modded this menu bar button for a theme...i got this result in photoshop:

http://www.pctunerup.com/up//results/_200809/20080924164157_menuBarButtonphotoshop.png
the shadow looks good

when i apply the theme, litestep shows me this:
http://www.pctunerup.com/up//results/_200809/20080924163714_litestep.png
as u can see, the shadow doesn't looks good.

How can i fix this problem? Thanks!