[ic] ActionMap question

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

What can I add to an ActionMap like this:

ActionMap error <<EOR
sub {
        $CGI->{mv_nextpage} = 'error_page';
}
EOR

to make it get rid of the "error" in the URL?  The bounce would be to
something like this to trigger the ActionMap:

www.mystore.com/cgi-bin/catalog/error/somepage.html

but I don't want the "error" to visibly show up in the URL.  I want it to
look like this:

www.mystore.com/cgi-bin/catalog/somepage.html

Can the ActionMap shift the URL down like that?

- Grant