I have created for myself a small google chrome extension which generates a treeview toc pane of the online python docs as well as the matplotlib docs. This is intended to facilitate doc navigation, much the same way the navigation pane in a chm viewer does.
Read more and install it at https://bitbucket.org/altaurog/sphdoctoc/overview enjoy, Aryeh Leib Taurog -- http://mail.python.org/mailman/listinfo/python-list