On a front page I have a main menu being modified by Nice Menus module. There is also a Views Slideshow display in a different region. When drop-downs are triggered from a Nice Menus item, the drop-down doesn't display properly over the Views Slideshow. (see screen capture - dropdown from "All Applications & Forms") It seems to go behind it. Doing an almost identical thing in Drupal 7, I didn't have this issue. How can this be fixed?