my_image_send_to_editor

function my_image_send_to_editor($html, $id, $alt, $title, $align, $url, $size, $desc ){
	$html = get_image_tag($id, $alt, $title, $align, $size);
	$image_attributes = wp_get_attachment_image_src( $id, 'full' );
	$rel = ' rel="lightbox[post] attachment wp-att-' . esc_attr($id).'"';

	if ( $url )
		$html = '<figure class="align'.esc_attr($align).'"><a href="'. $image_attributes[0] .'" title="'. esc_attr($alt) .'" '. $rel .'>' . $html . '<img class="rollover" src="/ins/wp-content/themes/roots/img/overlay.png" alt="overlay"></a><figcaption>'.esc_attr($desc).'</figcaption></figure>';
	return $html;
}