 [];								// List of the columns already shown in the chart, excluding the 'line' dataset
			var type = "bar";										// Type of the dataset
			var order = document.getElementById('select-order-column').value;	// Column selected to be ordered
			var direction = document.getElementById('select-order-direction');	// Element containing the direction of the sorting
			var direction_label = document.getElementById('select-order-direction-label');	// "Ascending" or "Descending" label
			var quantity_data_show