Ideas Needed for a SubMenu?

Right now I have this giant movie clip with all of these buttons placed in it. So I’m kinda running out of room.

  1. Any suggestions to streamline this? They’re items that are organized in groups according to category.

  2. I’m also attempting to learn how to make an animated submenu, so that it scrolls upwards or downwards according to the position of the mouse. Any help would be greatly appreciated.