This is the NestedSortable Widget, a plugin for jQuery. 
It will draw a component which allows you to sort and 
nest a list of multi-column items at the same time.

You will need to include the dependencies 
(jQuery, Interface, NestedSortable) in order 
to be able to use it.

Please, refer to the documentation at: 
http://nestedsortables.googlecode.com/

There you will find detailed information and examples.

(c) 2007 - Bernardo de Padua dos Santos - http://bitsinashortbit.wordpress.com