twentythirteen_custom_header_setup()

23function twentythirteen_custom_header_setup() {24	$args = array(25		// Text color and image (empty to use none).26		'default-text-color'     => '220e10',27		'default-image'          => '%s/images/headers/circle.png',28 29		// Set height and width, with a maximum value for the width.30		'height'                 => 230,31		'width'                  => 1600,32 33		// Callbacks for styling the header and the admin preview.34		'wp-head-callback'       => 'twentythirteen_header_style',35		'admin-head-callback'    => 'twentythirteen_admin_header_style',36		'admin-preview-callback' => 'twentythirteen_admin_header_image',37	);38 39	add_theme_support( 'custom-header', $args );40 41	/*42	 * Default custom headers packaged with the theme.43	 * %s is a placeholder for the theme template directory URI.44	 */45	register_default_headers(46		array(47			'circle'  => array(48				'url'           => '%s/images/headers/circle.png',49				'thumbnail_url' => '%s/images/headers/circle-thumbnail.png',50				'description'   => _x( 'Circle', 'header image description', 'twentythirteen' ),51			),52			'diamond' => array(53				'url'           => '%s/images/headers/diamond.png',54				'thumbnail_url' => '%s/images/headers/diamond-thumbnail.png',55				'description'   => _x( 'Diamond', 'header image description', 'twentythirteen' ),56			),57			'star'    => array(58				'url'           => '%s/images/headers/star.png',59				'thumbnail_url' => '%s/images/headers/star-thumbnail.png',60				'description'   => _x( 'Star', 'header image description', 'twentythirteen' ),61			),62		)63	);64}