I read that Sarissa was a way to do xml transformations with cross-browser support.  I gave this a try and had some problems with javascript that was unsupported.  I found another solution to xml transformations – using php version 5 and doing the transformations on the server.

 This works OK with Firefox but it has problems in IE.

window.onload = function() {
 var xslt = new XSLTProcessor();
 xslt.importStylesheet(xsl);
 var out = xslt.transformToDocument(xml);
 document.write(Sarissa.serialize(out));
};