Nice looking spec. I just tried it in my Firefox 2. Based on the advice there I would expect one of the following two to cause script tags to default to version 1.7 but neither does:
in reply to Re^6: [OT] Perl / Computer Science Science Fair Projects
in thread [OT] Perl / Computer Science Science Fair Projects
(Either content version will work in a type tag to a script.)
Given that failure, I am not going to rewrite my code sample to be inlined in a script tag. I'm just going to assume that it won't work.