I have a Wordpress installed in my local pc for testing. I'm using Emagazine theme from iDesignnow.

Everything ran well, until recently I noticed that the responsive Pulldown menu not working anymore.

If I hover on menu, the submenu doesn't show up anymore. When I checked on the demo site, it also experiences the same problem.

You could check it here: http://emagazine.idesignow.com/
Hovering on GAMES, MOVIE, MUSIC, etc. won't show the sub menu up.

When I checked using Mozilla Error Console, it reported TypeError: menu is undefined
It seems the problem originated from superfish.js

looking forward some advice on this issue.