;/*****************************************************************
 * カスタム関数 ENO
 *******************************************************************/
function checkDate(field, rules, i, options){
	var holiday = ["2026-04-06","2026-04-07","2026-04-13","2026-04-14","2026-04-20","2026-04-21","2026-04-27","2026-04-28","2026-05-04","2026-05-07","2026-05-11","2026-05-12","2026-05-18","2026-05-19","2026-05-25","2026-05-26","2026-06-01","2026-06-08","2026-06-09","2026-06-15","2026-06-22","2026-06-23","2026-06-29"];
	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。";
	}
}