“You add <?xml:stylesheet href=“blabla.css” type=“text/css”?> to blabla.xml. You will notice that, once again, this will not work in Firefox for some weird reason. I suggest using Internet Explorer for this. Nevertheless, there’s a workaround for Firefox, using xml-stylesheet for you Firefox fans…”

Well well, let’s all blame Firefox (well, Gecko, to be precise) for not parsing this correctly! Especialy when xml-stylesheet is the only valid option set by W3C…