#!/usr/bin/perl -Tw

#accepts application/xhtml?
if ($ENV{'HTTP_ACCEPT'} =~ /application\/xhtml\+xml/)
{
    print "content-type:application/xhtml+xml; charset=utf-8\n\n";
}
#no? then text/html they get
else
{
    print "content-type:text/html; charset=utf-8\n\n";
}