$(function() {
    $.datepicker.setDefaults($.datepicker.regional["ja"]);
    $("#gkrkcal").datepicker( {
      autoSize: true,
      dateFormat: 'yy/mm/dd',
      minDate: '2024/04/29',
      maxDate: '2021/03/14',
      beforeShowDay : function(date) {
        var dateFormat   = 'yy/mm/dd';
        var disableDates = [
          "2018/12/30","2018/12/31","2019/01/01","2019/01/02","2019/01/03","2019/01/04","2019/01/05","2019/01/06","2019/01/12","2019/01/13","2019/01/19","2019/01/14","2019/01/20","2019/02/10","2019/01/27","2020/12/27","2020/12/29","2021/01/23","2021/01/03","2021/01/10","2021/01/17","2021/01/24","2021/01/31","2021/02/11","2021/01/30","2021/02/07","2021/02/06","2021/02/13","2021/02/14","2021/02/21",
          "2021/01/14","2021/01/15",
          "2021/01/18","2021/01/19","2021/01/20","2021/01/21","2021/01/22",
          "2021/01/25","2021/01/26","2021/01/27","2021/01/28","2021/01/29",
          "2021/02/01","2021/02/02","2021/02/03","2021/02/04","2021/02/05",
          "2021/02/08","2021/02/09","2021/02/10","2021/02/12" ,
          "2021/03/01","2021/03/02","2021/03/03","2021/03/04","2021/03/05",
          "2021/03/08","2021/03/09","2021/03/10","2021/03/11","2021/03/12"
          ];
        var disableDate = $.datepicker.formatDate(dateFormat, date);
        return [( disableDates.indexOf(disableDate) == -1 ), "予約不可", ""];
      }
    });
    $('#gkrkcal').attr('readonly',true);
  });