add_action ( 'genesis_after_header', 'sk_featured_image', 9 );
/**
 * Display Featured image after header
 * only on the first page when the Page or Post is divided into multiple using <!--nextpage-->
 *
 * Scope: static Pages and single Posts.
 *
 * @author Sridhar Katakam and Gary Jones
 * @link   http://sridharkatakam.com/, http://gamajo.com/
 */
function sk_featured_image() {

    if ( has_post_thumbnail() && ( is_page() || is_single() ) && 0 === get_query_var( 'page' ) ) {

        // Get the URL of featured image
        $image = genesis_get_image( 'format=url' );

        // Get the alt text of featured image
        $thumb_id = get_post_thumbnail_id( get_the_ID() );
        $alt = get_post_meta( $thumb_id, '_wp_attachment_image_alt', true );

        // If no alt text is present for featured image, set it to Post/Page title
        if ( '' == $alt ) {
            $alt = the_title_attribute( 'echo=0' );
        }

        // Display featured image
        printf(
            '<div class="my-featured-image"><img src="%s" alt="%s" class="aligncenter" /></div>',
            esc_url( $image ),
            $alt
        );

    }

}