Auto collapse animation when selecting other menu options?

I was wondering whether there was a way to have the collapse animation draw not only when you hit the "minus" button, but also when you select a menu option that's outside the sub-hierarchy being closed. So for instance:

• Item 1
• (+) Item 2
  • Sub item 1
  • Sub item 2
  • Sub item 3
• Item 3

Let's say the submenu for Item 2 is open. I'd like it so that when you click on Item 1 or 3, however, that the Item 2 submenu automatically collapses with an animation. Is this possible with some code tweaking? Or, since clicking on the link changes nodes/pages anyway, is it simply not doable? (I confess I'm a n00b to both Drupal and jQuery, hence my question.)

Thanks!

Michael Huang
TMBC.com
Web Developer