ถามเรื่อง Datepicker Block Startdate ห้ามมากกว่า Enddate และ Endate ห้ามน้อยกว่า StartDate แบบหลาย Input ครับ

for(x=0;x<form2.count_sel.value;x++){

			var a = x;
			var start_date_sel = "#start_date_sel";
			var start_date_sel = start_date_sel+a;

			var end_date_sel = "#end_date_sel";
			var end_date_sel = end_date_sel+a;

			var start_date_stopsale_sel = "#start_date_stopsale_sel";
			var start_date_stopsale_sel = start_date_stopsale_sel+a;

			var end_date_stopsale_sel = "#end_date_stopsale_sel";
			var end_date_stopsale_sel = end_date_stopsale_sel+a;

			$(start_date_sel).datepicker({
				numberOfMonths: 1,
				onSelect: function(selected) {

				  id = $(this).attr('id');		
				   
				  var lastChar = id.substr(id.length - 1);
				  var lastChar2 = "#end_date_sel"+lastChar;

				   $(lastChar2).datepicker("option","minDate", selected)
			   }
			});
			$(end_date_sel).datepicker({
				numberOfMonths: 1,
				onSelect: function(selected) {

				  id = $(this).attr('id');		
				   
				  var lastChar = id.substr(id.length - 1);
				  var lastChar2 = "#start_date_sel"+lastChar;

				   $(lastChar2).datepicker("option","maxDate", selected)
				}
			}); 
			$(start_date_stopsale_sel).datepicker({
				numberOfMonths: 1,
				onSelect: function(selected) {

				  id = $(this).attr('id');		
				   
				  var lastChar = id.substr(id.length - 1);
				  var lastChar2 = "#end_date_stopsale_sel"+lastChar;

				  $(lastChar2).datepicker("option","minDate", selected)
			   }
			});
			$(end_date_stopsale_sel).datepicker({
				numberOfMonths: 1,
				onSelect: function(selected) {

				   id = $(this).attr('id');		
				   
				   var lastChar = id.substr(id.length - 1);
				   var lastChar2 = "#start_date_stopsale_sel"+lastChar;

				   $(lastChar2).datepicker("option","maxDate", selected)
				}
			}); 
	}