public function __construct( $_field ) {

		$_field = wp_parse_args(
			$_field,
			array(
				'date_format'        => 'mm/dd/yy', // jQuery datepicker formats (http://api.jqueryui.com/datepicker/#utility-formatDate).
				'date_max'           => '',
				'date_min'           => '',
				'date_displayformat' => $this->php_to_jquery_date_format( get_option( 'date_format' ) ),
			)
		);

		$this->field = $_field;
	}