en the timezone selector changes, rerender the calendar
                $('#timezone-selector').on('change', function()
                {
                    currentTimezone = this.value || false;
                    $('#calendar').fullCalendar('destroy');
                    renderCalendar();
                });

                function renderCalendar()
                {
                    $('#calendar').fullCalendar(
                    {
                        header:
                        {
       