Problem with Openbox and maximize

[basi]

Hello everybody.

I have a small problem with Openbox and maximize windows.
Althought I'm quite sure that the problem is situated in my rc.xml, i don't know how to solve it.

At the top of my desktop i have pypanel, and at the bottom tint/ttm and visibility.
If i open a window and want to make it fullscreen tint & visibility always overlap the window, so that i can't see the last few lines.
Is it possible to set a max vertical size in the rc.xml?

Thanks already
greetz
basi

[NuclearGorilla]

I don't know if there's another way, but if you're using Openbox 3.4, you could try setting margins at the edges of the screen the same dimensions as your obstructions.