Dropdown menu stopped working after WordPress update

Updated a client’s site to 3.5.2 – everything works, but now the navigation bar’s dropdown menu’s are not longer working. Books and Events are the dropdown menus that are not working. Trying to get support from Envato, but without the client’s original login info I’ve gotten nothing. Any help would be truly appreciated! Not even sure where to start on this one!

http://alfonsoderose.com