extend an xslt template defined elsewhere?

I have a 'customization layer' as described in Docbook context for my
XSLT stylesheets....

I'd like to know if there is a way I can extend an existing
xslt:template definition (inheriting all its properties, plus adding
my own).

Basically there is a rather large template defined for orderedlist in
docbook xhtml xslt files, and I'd like to add a simple " if @role =>
convert to @class in html" (pseudo code) without having to copy the
entire template definition.



-- 
Anthony Ettinger
Ph: 408-656-2473
var (bonita, farley) = new Dog;
farley.barks("very loud");
bonita.barks("at strangers");

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