help with modifying path

[Matt Flush]

Is there a way to strip the path from a request only on the backend? In the
example below I want to direct traffic to
www.domain.com/swf<http://www.domain.com/v2>/*
to the "flash" backend but drop the "swf" so that the request is just
"backend:80/" not backend:80/swf/".  I've tried different variations of
"path_beg" and "url_beg" with no luck.

Thanks!
--

acl url_swf              path_beg       -i /swf

use_backend flash      if url_swf
default_backend         app

backend flash
        mode http
        balance roundrobin
            cookie BALANCEID prefix
            server flash01 10.1.1.1:80 cookie A check
            server flash02 10.1.1.2:80 cookie B check