function ValidateDates11a() {
				arrival_date="" + document.availability.arrival_daymonthyear.value;
				departure_date="" + document.availability.departure_daymonthyear.value;
				
				var d1 = new Date(arrival_date.substr(3,2) + "/" + arrival_date.substr(0,2) + "/" + arrival_date.substr(6,4));
				var d2 = new Date(departure_date.substr(3,2) + "/" + departure_date.substr(0,2) + "/" + departure_date.substr(6,4));
				var todayD=new Date();
				
				var d1_month = d1.getMonth() + 1; if(d1_month<10) d1_month="0" + d1_month;
				var d1_day = d1.getDate(); if(d1_day<10) d1_day="0" + d1_day;
				var d1_year = d1.getFullYear();	var d1_full=d1_year + '' + d1_month + '' + d1_day;
			
				var d2_month = d2.getMonth() + 1; if(d2_month<10) d2_month="0" + d2_month;
				var d2_day = d2.getDate(); if(d2_day<10) d2_day="0" + d2_day;
				var d2_year = d2.getFullYear();	var d2_full=d2_year + '' + d2_month + '' + d2_day;
			
				var todayD_month = todayD.getMonth() + 1; if(todayD_month<10) todayD_month="0" + todayD_month;
				var todayD_day = todayD.getDate(); if(todayD_day<10) todayD_day="0" + todayD_day;
				var todayD_year = todayD.getFullYear();	var todayD_full=todayD_year + '' + todayD_month + '' + todayD_day;
				
			//	alert(d1_full + "," + d2_full + "," + todayD_full + "-" + todayD);
				if(d2_full<=d1_full) {
					alert("check input dates");
					return false;
				}
				if(d2_full<todayD_full) {
					alert("check input dates");
					return false;
				}
				if(d1_full<todayD_full) {
					alert("check input dates");
					return false;
				}
				
				return true;
			}