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

I found that Keith’s method worked for me. Since his answer doesn’t include an example implementation, I’ll post mine:

$('.dropTarget').droppable({
    drop: function(ev, ui) {
        var dropped = ui.draggable;
        var droppedOn = $(this);
        $(dropped).detach().css({top: 0,left: 0}).appendTo(droppedOn);
    }
});

or, slightly more concisely:

$('.dropTarget').droppable({
    drop: function(ev, ui) {
        $(ui.draggable).detach().css({top: 0,left: 0}).appendTo(this);
    }
});