drop-down menu not working anymore
Looks like you are getting a javascript error in your superfish.js file.

Uncaught TypeError: Cannot read property 'msie' of undefined


The $.browser method has been removed as of jQuery 1.9.

https://www.drupal.org/node/2111995

As stated in the Upgrade Guide you can try using the jQuery Migrate plugin to restore this functionality and let jQuery Tools work or you can use an earlier version of jQuery for your site (1.8 for example)