function calculatePostCost(OrderCost, sumWeight)
		{
			var obj = document.getElementById('pst_type');
			if (obj != null) { var pst_type = obj.value;}
			else var pst_type = '';
			obj = document.getElementById('pst_address');
			if (obj != null) var pst_address = obj.value;
			else var pst_address = '';
			AJAX_run('/ajax/calculatePostCost.php?pst_type='+pst_type+'&pst_address='+pst_address+'&OrderCost='+OrderCost+'&sumWeight='+sumWeight);			
		}