jQuery UI - Can it reproduce this behavior?

jQuery UI - Can it reproduce this behavior?

Hi all,

I'd like to recreate the following drag and drop behavior.

1. Have two sortable lists linked together. (I have this figured out)
2. Initially one list has all the options, the second one is empty. (No problem)
3. One can drop at most 5 items onto the second list. (How do I do this?)

I am basically looking to recreate this exact functionality:
http://www.dhtmlgoodies.com/scripts/drag-drop-nodes/drag-drop-nodes-demo2.html

The only difference is that I only need two lists. (Just Team A, not B - E)

I've spent two days now trying to figure this out. Any hele would be MUCH appreciated.

Thanks!