If I take the splitter basic usage example and put the menu basic usage example inside the toparea of the splitter - the dropdowns of the menu comes behind the next area of the splitter and is not visible.

I've tried to adjust z-index etc on the menu to get the dropdowns over the splitterareas, but I can not get it to expand over the other splitter areas.

I can send you screenshots/code etc if you need it..
Tested with IE9 (9.0.8112.16421) and Chrome 14.0.835.202 and Opera 11.51