This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
Which version of S2? Are you really using "html" as the S2 tag prefix?! I would strongly advise against that, since it will create confusion (S1 used "html" as the traditional prefix for the S1 HTML-oriented tags) and it's inaccurate, since many S2 tags don't produce HTML.