c.site_name = config.get('title')

        log.debug('### %s ###' % (resp and resp.status or 'no response'))

        e = request.environ

        c.serv_p = r'%(protocol)s://%(host)s/' % {

            'protocol': e.get('wsgi.url_scheme'),

            'host': e.get('HTTP_HOST'), }

        if resp:

            c.error_message = cgi.escape(request.GET.get('code',

                                                         str(resp.status)))

            c.error_explanation = self.get_error_explanation(resp.status_int)

        return render('/errors/error_document.html')

    def img(self, id):

        """Serve Pylons' stock images"""

        return self._serve_file(os.path.join(media_path, 'img', id))

    def style(self, id):

        """Serve Pylons' stock stylesheets"""

        return self._serve_file(os.path.join(media_path, 'style', id))

    def _serve_file(self, path):