DELETE FROM #__timetable_categories;
DELETE FROM #__timetable_columns;
DELETE FROM #__timetable_events;
DELETE FROM #__timetable_event_categories;
DELETE FROM #__timetable_event_options;
DELETE FROM #__timetable_event_hours;
DELETE FROM #__content WHERE alias IN ('timetable-for-joomla-sample-1', 'timetable-for-joomla-sample-2', 'timetable-for-joomla-sample-3', 'timetable-for-joomla-sample-4', 'timetable-for-joomla-sample-5');
DELETE FROM #__modules WHERE position='event-sidebar';
DELETE FROM #__menu_types WHERE menutype='timetable-hidden-menu';
DELETE FROM #__menu WHERE alias IN ('timetable-for-joomla-sample-1', 'timetable-for-joomla-sample-2', 'timetable-for-joomla-sample-3', 'timetable-for-joomla-sample-4', 'timetable-for-joomla-sample-5');