[web2py] For interest: Regressive enhancement with Modernizr and yepnope.js

[Tom Atkins]

how to only load JavaScript as a fall-back when browsers don't support an
HTML5 feature - i.e. *regressive* enhancement:

http://blogs.sitepoint.com/2011/03/08/regressive-enhancement-with-modernizr-and-yepnope/