I have an XML (Atom) doc at this URL...
Atom
...which displays as HTML using any one of three XSLT
stylesheets, the principal one being at this URL...
XSLT
...with two daughter-XSLT's, both very short, and employing
<xsl-import ... >. I can edit the XML to pick any of the three
and it works in Firefox (crashing, of course, in MSIE 7).
The stylesheet...