Sortable behaviours

Sortable behaviours


Hi,
I've recently switched from interface to UI, and I have some problems
with the sortable plugin.
I have 4 floating (sortable) div, 3 in the first row and 1 in the
second (see the image http://img265.imageshack.us/img265/3856/screenshot073ok0.png).
When I drag the box number 4 up, all the boxes moves to the right; and
I get the sequence: 4-1-2-3. This is normal I think, but the behaviour
that I need is different. I would to switch the places of the 2 boxes
without move the other boxes. In this case the sequence after the drag
must be: 4-2-3-1.
Any idea for changing the normal sortable behavoir to match my needs?
Tnx in advance.
-Maurizio