How to find the new size of a div via the resizeable stop function call?

How to find the new size of a div via the resizeable stop function call?


I'm working on my first JQuery UI routine and have divs that are
stretched by the user. The size snaps nicely to a grid, but I'm having
trouble making sense of the e and ui variables that are passed by the
stop function.
Can anyone point me to information on these structures, or some
examples of people using the values when resizing stops. All the demos
I've found just size the divs but do nothing afterwards.
Thanks