code: def olark(parser, token):
      
      bits = token.split_contents()
      if len(bits) > 1:
          raise TemplateSyntaxError("'%s' takes no arguments" % bits[0])
      return OlarkNode()
docs: Olark set-up template tag.
  
      Renders Javascript code to set-up Olark chat.  You must supply
      your site ID in the ``OLARK_SITE_ID`` setting.