[Gimp-user] capture screen shot from google books

[mitchell laks]

I would like to capture a screen shot from google books, but the "dragging"
neccesary to define a region to capture is already used by the iceweasel
(browser) window to mean move in image. 

How can I set up  alternative bindings to "drag" so the screenshot gimp dialog
will capture the image i want.

I realize that i can capture the whole window screenshot and cut it down later.
that is a true  but not as  nice...
  

thanks

mitchell laks