Something

$HTTP["host"] == "stage.atarack.com" {
        server.document-root = "/home/xbmodder/panel/www"
        $HTTP["url"] !~ "^/static_media" {
                proxy.server = (
                        "" => (
                                "cherrypy" => ( 
                                        "host" => "127.0.0.1",
                                        "port" => 8080
                                        )
                                )
                )
        }
}