[ic] condensing the URL in an ActionMap

[interchange-users@icdevgroup.org (Grant)]

I've got my ActionMap set up like this:

ActionMap category <<EOR
sub {
        $CGI->{mv_nextpage} = 'category_page';
}
EOR

The URLs it will be fielding are like this:

/category/posters/p1.html

and I'd like to have the "category" portion removed which I think is a
pretty standard component of most ActionMaps.  Here's an example ActionMap
from Mike Heins:

ActionMap  category <<EOR
sub {
	my $path = shift;
	my ($catname, $page) = split m:/:, $path;
	$CGI->{somespec} = $catname;
	$page--;
	$CGI->{starting_match} = $page * 9;
	$CGI->{mv_nextpage} = 'some_display_page';
	return;
}
EOR

What can I change my ActionMap to in order to give it the "condensing"
functionality?  I don't know anything about Perl.  Thanks!

- Grant