I use Zeropoint theme and the drop-down menu in this theme.
When I hover the mouse over a menu, and the menu is expanded, my submenu is placed under the slideshow and is not show completely.
Do you have any suggestion on how to solve it?
I have this problem using things like Views Slideshow and NiceMenus. You can perhaps fix it by changing the CSS of the menu to include the following:
z-index: 99. If you post a link to the site I can give you a more detailed answer.