[tannhaeuser]

You might also want to consider whether markup/HTML is the right tool for the job in the first place. Don't get me wrong - I'm as much of an SGML geek as it gets - but there's no point in using multiple serialization formats (HTML and CSS and JS) just for the sake of it when you're coding an "app" as opposed to writing a "doc" and the app ultimately needs JS, and not just for progressive enhancement anyway.