2><p>There are currently no XSLT processors that we know of that support <code>date:sum</code> natively.</p><p>
                  Implementations of <code>date:sum</code> are available in the following languages:
               </p><ul><li><a href="date.js">Javascript</a> (by <a href="mailto:chris@bayes.co.uk">Chris Bayes</a>)</li><li><a href="date.msxsl.xsl">Msxsl</a> (by <a href="mailto:chris@bayes.co.uk">Chris Bayes</a>)</li></ul></td></tr></table><div id="colophon"><p><a href="http://www.exslt.org/date/