Rails spinoffs - Jul 2006 - Sortables: Detecting which sortable object came from and which it was dropped on

ok, i have 3 sortable elements

this is how thier all three set up..

| Sortable.create(''blocks1'',{
			dropOnEmpty:true,
			tag:''div'',
		
containment:[''blocks1'',''blocks2'',''blocks3''],
			only:''sortable'',
			constraint:false,
			handle:''handle'',
			ghosting: false,
			onChange: function(e) {
				dragging = e.id;
			},
			onUpdate: function(c){
				new Insertion.Bottom(''div_sort1'', dragging+''
dropped on ''+c.id+''<br>'');
			}
		});

now this works great it fills my div_sort1 with all the info that''s
going on. but since sortables fires off the on update event for ALL the
sortables on the page i end up getting alot of useless (and server heavy)
information

now when i move one draggable from sortable "blocks1" to sortable
"blocks2" i get this

|block_1 dropped on blocks1
block_1 dropped on blocks2

is there a way to make is so that i''d be able to get info like this..

block_1 removed from blocks1
block_1 dropped on blocks2

so that basically the sortable that it take the "block_1" out of will
report that "block_1" has been removed from it, not that it has moved
to it