How do I change the behavior of the 'python-docs' action in IDLE?

[samwyse]

In the Windows version of Python 2.5, pressing F1 brought up the
python.chm file.  I've just installed 2.6, and the same action opens
http://www.python.org/doc/current/.  I'd prefer the former behavior.
I know how to change the key bindings in config-keys.def, but I think
I want to change the action, not the key binding.  Thanks.