[flexcoders] Animate items coming in from a list

[dorkie dork from dorktown]

I want to have the items in my list slide in (with a bounce tween)
from the bottom up. I'm not sure how to do this. So let's say I have
30 items in my list. I want to have them one after another tween in
from below the bottom of the list (mask) and ease in to position (1st
item in 1st row position, 2nd item in 2nd row position, etc).