I have two issues I'm trying to solve here...
1. If I take a sub-item right now I can drag that sub-item to the main level. I only want to allow the sub-items to be sortable within main groupings.
2. The second issue is that if I drag a main grouping over a sub-item area the "placeholder" css is showing a default state within in the sub-item listings depending the area. I would like to not mislead the user in thinking they can take a main grouping and place it within another main grouping even though the jquery ui is not allowing it on dropping it there (being canceled).
Thanks for the help!