The Superfish module unleashes the otherwise hidden submenu items in your main menu and automatically produces backward compatible drop-down menus for your existing theme. In this recipe, we will first install the required Superfish library, and then go on to create and configure a new Superfish menu block. Finally, we will need to disable the existing main menu.
To complete this recipe, you will need to install and enable the following modules:
You will also need to ensure that you are running jQuery 1.3.x or higher (this is included with the Drupal 7 core).
Also make sure that you have some main-menu items and some submenu items in your menu so we can demonstrate that the Superfish drop-downs are working.
In order to upload the Superfish library you will need FTP access to your site and an FTP client.