Invisible Mozilla fonts

[Ross Boylan <RossBoylan@stanfordalumni.org>]

I'm using mozilla 1.6-5 in testing, including mozilla-xft which
activates the xft support.

Considerable chunks of the subversion.tigris.org are invisible in this
browser.  These are pieces formatted with <pre>.

E.g.,
http://cvs2svn.tigris.org/servlets/ReadMsg?list=users&msgNo=73&raw=true
the text of the message (either raw or formatted) is invisible to me.
(OK, that wasn't subversion.tigris.org...)

The page source includes
 @import "/branding/css/tigris.css";
 @import "/branding/css/inst.css";

http://www.tigris.org/branding/css/tigris.css includes
code, pre {
	font-family: 'Andale Mono', Courier, monospace;
}


xfontsel shows no Andale fonts.

Does anyone have any suggestions for how I can go about diagnosing (or
curing :) ) this problem?  For starters, how do I figure out what font
mozilla actually asks for?  I'm not sure if I should be focussing on
Mozilla or my xft setup.

By the way, I can see the page in Konqueror (though it's very tiny).
The small size probably is a result of this additional style:

body, .app h3, .app h4, #rightcol h3, pre, code, #apphead h2 small, h4, table {
	font-size: x-small;
	voice-family: "\"}\"";
	voice-family: inherit;
	font-size: small;
}

Huh?  font-size x-small and small at the same time?

Oh, final question for extra credit: I thought the whole purpose of
style sheets was to make it easy for me to put my own in place of the
one on the site.  Is there a way to do that?