Hi,

I am developing a module that requires adding a custom namespace to the current active theme. Is there an easy way to do this other than asking module users to manually make the change.

E.g., Change html xmlns="http://www.w3.org/1999/xhtml" to
html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml"

Appreciate any help here.