drag 'n' drop reordering

[Josh Mellicker]

I have a set of buttons that I'd like the user to be able to reorder  
by dragging and dropping


a la

http://demo.script.aculo.us/ajax/sortable_elements

http://tool-man.org/examples/sorting.html



I can think of several ways to approach this... but I think my noob  
brain is overcomplicating things.


Does anyone have a more elegant way to achieve this?


(I also need to know the final order once the user is done sorting)