;/*****************************************************************
 * カスタム関数 ENO
 *******************************************************************/
function checkDate(field, rules, i, options){
	var holiday = ["2026-06-01","2026-06-02","2026-06-08","2026-06-09","2026-06-15","2026-06-16","2026-06-22","2026-06-23","2026-06-29","2026-06-30","2026-07-06","2026-07-07","2026-07-13","2026-07-14","2026-07-20","2026-07-21","2026-07-27","2026-07-28","2026-08-00"];
	var fieldDate = field.val();
	var xmasStart = "2026-12-23";
	var xmasEnd = "2026-12-25";
	if (holiday.includes(fieldDate)) {
		 return "定休日のため、ケーキの予約はできません。";
	}
	if ((fieldDate >= xmasStart) && (fieldDate <= xmasEnd)) {
		 return "クリスマス期間中のため、通常のケーキは予約できません。";
	}
}