code: def crazy_egg(parser, token):
      
      bits = token.split_contents()
      if len(bits) > 1:
          raise TemplateSyntaxError("'%s' takes no arguments" % bits[0])
      return CrazyEggNode()
docs: Crazy Egg tracking template tag.
  
      Renders Javascript code to track page clicks.  You must supply
      your Crazy Egg account number (as a string) in the
      ``CRAZY_EGG_ACCOUNT_NUMBER`` setting.