For the 3-state-function of buttons like close-button.png..what are the limits for pixel size of the image?
I'm trying to create buttons with glow around them like in the skin i adapted or like in real vista. For that i need spaces between the buttons where the glow will fit in.
When i try to increase the pixle size of the .png it wont display anymore.

(sorry for butting in in english here, but i think it's still better than my completely messed up french ;) )