function ValidateDates() {
				arrival_date=document.availability.arrival_date.value;
				departure_date=document.availability.departure_date.value;
				
				document.availability.arrival_day.value=parseInt(arrival_date.substr(0,2));
				document.availability.arrival_monthyear.value=arrival_date.substr(3,7);
				document.availability.departure_day.value=parseInt(departure_date.substr(0,2));
				document.availability.departure_monthyear.value=departure_date.substr(3,7);
				
				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();
				
				if(d2<=d1) {
					alert("Check if you have enter the correct days");
					return false;
				}
				if(d2<todayD) {
					alert("Check if you have enter the correct days");
					return false;
				}
				if(d1<todayD) {
					alert("Check if you have enter the correct days");
					return false;
				}
				
				return true;
			}