text: DROP TABLE IF EXISTS `webim_settings`;
  DROP TABLE IF EXISTS `webim_histories`;
  DROP TABLE IF EXISTS `webim_rooms`;
  DROP TABLE IF EXISTS `webim_members`;
  DROP TABLE IF EXISTS `webim_visitors`;
  DROP TABLE IF EXISTS `webim_blocked`;
  DROP TABLE IF EXISTS `webim_buddies`;
  DROP TABLE IF EXISTS `webim_asks`;
  