;							// Column names of the data in a list of strings
		var data = [];														// List of the data to be shown
		var chart_type = "bar";												// Initial dataset type
		var selected_column = "popularity";								// Initial column
		var label = data_columns[data_columns.indexOf(selected_column)];	// Position of the selected column in the data
		var data_labels = [];												// List of the data labels to be shown
		var quantity_data_shown = 10;										// Number of rows that will be shown in 