Scriptaculous sortables

I’m wondering if anyone has experience w/ the scriptaculous sortables function. I’m having a bit of trouble singling out a single sortable ID once it’s dragged into the desired container.

The snippet of code that is relevant to this is:


Sortable.create('trashBG',{tag:'div',dropOnEmpty: true,constraint: false,containment: sections,only:'lineitem', onUpdate:function(element){ getGroupOrder(); Ajax.request('updated.php?order='+idOrder); new Effect.Fade('trashBG',{});  } } );

I can get the parent object to fade out easily which is ‘trashBG’ but I need he child if ‘trashBG’ to fade out instead.