Change the banner custom background in Beautiful Pro Wordpress theme to use featured image

gistfile1.php

<?php

// Adding option to use featured image (if it exists)
// in place of background image

remove_action( 'genesis_after_header', 'beautiful_site_header_banner'); // removes existing banner image

add_image_size( 'featured-banner', 2000, 200, TRUE ); // creates a featured image size for the banner

function amcs_featured_img() {
	if ( has_post_thumbnail() ) { // checks post has thumbnail
	// gets URL for that image
	$background = wp_get_attachment_image_src( get_post_thumbnail_id( $page->ID ), 'featured-banner' ); 
	if (is_array($background)) {   
    // thanks to @magicroundabout for the fix
    // echo the output
	echo '<div class="featured-header-banner"  style="background: url(' ;
	echo $background[0];
	echo ') no-repeat scroll center center #FFFFFF"></div>'; 
	}}
	else { // if no featured image, adds class to use existing banner
	echo '<div class="site-header-banner"></div>';
}}

add_action( 'genesis_after_header', 'amcs_featured_img' );

Updated 15/01/14 to add featured image as a background image, which replicates existing responsive behaviour. Requires .beautiful .featured-header-image {height:200px;} in style.css

Thanks for this! But I found that I had to use

.beautiful .featured-header-banner {
height:200px;
}

for the style.css (banner instead of image). Otherwise this worked great!