jQuery draggable + droppable: how to snap dropped element to dropped-on element

Question

I have my screen divided into two DIVs. In the left DIV I have a few 50x50 pixel DIVs, in the right DIV I have an empty g

Answer 1

$("form li").draggable({snap:'.ui-droppable', snapMode:'inner', revert:true});
$('.drop').droppable({drop:function(ev, ui)
                           {$(ui.draggable).appendTo($(this))
                                           .css({position:'static', left:'0px', top:'0px'})
                                           .draggable('option', 'disabled', false)
                                           .css({position:'relative'});
                           }
                     }
                    );