If you have say, a 1024x768 wallpaper, you need to crop off the bottom 100 pixels and use that for the bottom panel, and the 1024x668 remainder for the center and top panels.
Whatever size wall you are using, the bottom 100 pixels, or whatever size you set your bottom panel as, need to be cropped off the wall and used as the bottom panel.
Guys, how about the top panels, I also need to crop off 100 pixels or I just change the visible value form true into false ? Any suggestion ?
Many thanks