Is there a way of hiding and then re-showing the mouse 'busy'
cursor when your mouse completely leaves the browser window, and
then comes back in? (if it's still busy when you re-enter)
The "normal" behavior for this is for the busy cursor to just
sit on the edge of the Flex app wherever the mouse exited at. It's
pretty weird and stupid looking. It's only a problem if the little
mouse busy cursor timer dial thing is showing.