I added the mega menu to my SharePoint site, which works fine. See this thread: http://social.msdn.microsoft.com/Forums/en-US/8ae57f2c-51ce-4d94-be19-634ac58bb8c3/need-help-with-script-editor?forum=sharepointdevelopment
But now I have one small issue which I cannot solve.
As you can see the header of the page shifts to the right (behind the last "button"). Just an css issue but I can't find it. Can someone help me out?