static S ai_html_webThumbUpDownLinks(S webID) {
  ret ai_html_webThumbUpDownLinks(webID, null);
}

static S ai_html_webThumbUpDownLinks(S webID, S upLink) {
  bool authed = webAuthed();
  S imgUp = hsnippetimg(#1000223), imgDown = hsnippetimg(#1000224);
  S textUp = "Web " + webID + " is correct";
  S textDown = "Web " + webID + " is invalid";
  S html;
  if (upLink != null)
    html = ahref(upLink, imgUp);
  else
    html = html_smartBotInputLink_authBased(textUp, imgUp);
  ret html + " "
    + html_smartBotInputLink_authBased(textDown, imgDown);
}