I'd like to see what you come up with.
I plan to refine it myself.

What I'm trying to do with the timer  is
write another Handler which will enable
me to click  on an ImageButton and pass
the X, Y coordinates and the size and
image path to the Handler. This Handler
will cut a rectangle out of a larger image
and pass it back so that I can show
increased detail.

After thinking about it I decided I would
be better off opening a new window
on the ImageButton click and accessing
the coordinates thru Session variables.
I would then pass this to the Handler from the
new window, receive the detail image back
and then close the new window with
setTimeout('window.close()', 3000). This
makes this easy and saves me 1 form
post.