Nested Sortable JQuery Plugin

For a project, we needed to present a multilevel product category list and allow full flexibility for ordering a category both within the current category as well as to another category or another level.

To solve this, we implemented this plugin:
http://mjsarfatti.com/sandbox/nestedSortable/

Few modifications were required to integrate it into the existing siteadmin ordering functionality included  mostly around setting up the categories in the correct format to work with the plugin.