slideImages javascript output

// // ########################
// // ########################
// // ########################
// // ########################
// GALLERY SHORTCODE OVERWRITE

// Bind to header
add_action('wp_head', 'header_init');
// Remove default shortcode
remove_shortcode('gallery', 'gallery_shortcode');
// Add custom shortcode (blank)
add_shortcode('gallery', 'gallery_shortcode_overwrite');

// Header init
function header_init () {
  global $post;

	// // ########################
	// GALLERY ARRAY JAVASCRIPT OUTPUT

	// Split content into ID's
	$ids = explode('[gallery ids="',$post->post_content);
	$ids = explode('"]', $ids[1]); // Refactor? - could be done with regexp, and maybe even smarter
	// Clean array to return
	$imgs = array();
	// Explode and loop through attr ID's
	foreach (explode(',',$ids[0]) as $id) {
		// Set caption of image
		$caption = get_post_field('post_excerpt', $id);
		// Set url of image
		$url = wp_get_attachment_image_src($id);
		// Push to array
		array_push($imgs, 
			array(
			'title'	=> $caption,
			'image'	=> $url[0]
		));
	}
	// Echo slideImages javascript variable
	echo "\n" . '<script type="text/javascript">var slideImages = ' . json_encode($imgs) . ';</script>';
	
	// // END ####################
	// // ########################

}

function gallery_shortcode_overwrite ($attr) {
	return '';
}
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// // ########################