Subpages Gallery Template Page Final

<?php
/*
Template Name: Subpages Thumbnail Page
*/
?>

<?php get_header(); ?>

<div id="main-container-subpages">

   <div class="main">

    	<span style="display:none;"><?php the_ID(); ?></span>
    	<?php $parent = $post->ID; ?>

		<?php
		query_posts( array(
			'posts_per_page' => 8,
			'post_type' => 'page',
			'paged' => get_query_var('paged'),
			'post_parent' => $parent,
			'meta_key' => '_thumbnail_id'
			));

    	while (have_posts()) : the_post(); ?>

			<?php $width = (ceil($wp_query->current_post/2)%2) ? 'thin-detail' : 'wide-detail'; ?>

			<?php $thumb = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), $width );
				$url = $thumb['0']; ?>

			<div class="detailthumb-<?php echo (ceil($wp_query->current_post)%4)+1; ?>"
			     style="background-image: url('<?php echo $url; ?>');">

				<a class="subpage-link" href="<?php the_permalink(); ?>">
					<span class="detail-title"><?php the_title(); ?></span>
				</a>

			</div>


       <?php endwhile; ?>


		<?php next_posts_link('<div class="more">MORE</div>'); ?>

   </div>  <!--Main-->

   <div class="clear">&nbsp;</div>

</div>  <!--Main Container (Subpages)-->

<?php get_footer(); ?>