How do I duplicate item when using jquery sortable?

Question

I am using this method http://jqueryui.com/demos/sortable/#connect-lists to connect two lists that i have. I want to be able to drag from list A to list B but when the item

Answer 1

I know this is old, but I could not get Erez's answer to work, and Thorsten's didn't cut it for the project I need it for. This seems to work exactly how I need:

$("#sortable2, #sortable1").sortable({
    connectWith: ".connectedSortable",
    remove: function (e, li) {
        copyHelper = li.item.clone().insertAfter(li.item);
        $(this).sortable('cancel');
        return li.clone();
    }
}).disableSelection();