I found the problem.
I built the navigation tree under “Pages” which doesn’t work.
After rebulding it under “Appearance” => “Menus” it’s working fine.
Thx.
I deacticated the maintenance mode.
Look at it now please. In full screen mode, there are no sub menus.
If you narrow the windows, you’ll see sub menus.
No submenus in full screen:
http://www.avhallersolutions.ch/_dev/no_submenus.png
Submenus after narrowing the window:
http://www.avhallersolutions.ch/_dev/submenus.png
*When you narrow the window (740 px width) you’ll see some arrows and you can see the sub menus by clicking on it.