[jQuery] UI Sortable - Limit drag to item header

[jQuery] UI Sortable - Limit drag to item header


Hi!
I'm wondering how I can limit the "dragability" of an sortable item,
to ex. a element inside the item.
Meaning, I only want the item to sort when the header of the item is
draged.
Is there a simple way to do this, or do I have to modify core code/
create a helper to accomplish this functionallity? Have read the docs,
but haven't found anything that mentions this..
Best regards,
Robin