external variables

I am doing server-side XSL processing where I have an XSL stylesheet and
some in-memory, generated XML. The transformation is to HTML. I would like
the be able to add some if-then coding to my XSL depending on the browser
type.

What is the right way for getting to information like this? Should I set an
environment variable and use system-properties() to access it, or is there a
better way I can't figure out? I'm trying to set up for using XSchema so I
want to avoid using DTD's. I'm using James Clark's XT/XP.

Also, how would this work from a command like app? I would like to set
variables on the command line and then access them from the XSL sheet.

Jon Smirl
jonsmirl@xxxxxxxxxxxx



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