[Moo] More Fades

[Todd]

Using Jacob's excellent example at http://mooshell.net/m3ngD/ I've
been trying to add a second nav list at the bottom of the page (let's
call it .nav_1) that would perform the same function by fading in 4
additional divs into the same parent container (#frame_preview) on
mouseenter. I've been unable to fade-in this second group of divs.
Instead, what happens is the second list simply triggers the first
group and not the secondary ones. Is this possible to do?