AJAX Calendar with PHP and mySQL

A PHP calendar with AJAX 'day status' selection using a mySQL database, simply click on a day to mark it as 'busy'. This calendar function enables you to display calendars including month navigation and AJAX day status selection. Multiple calendars can be displayed at once, each with individual owner IDs enabling you to use calendars to display varying schedules/events. When a calendar is loaded by the 'calendar owner' then the AJAX functionality is also loaded enabling the user to simply click on a day to mark it as busy or free, adding/removing the event from the mySQL database.