attachment.php

<?php get_header(); ?>
<?php global $post; ?>
	<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
		<h1 class="ok-title">
			<?php the_title(); ?> <span class="meta-sep">|</span>
			<a href="<?php echo get_permalink( $post->post_parent ); ?>"
			   title="<?php printf( __( 'Return to %s', 'openkitchen' ), esc_html( get_the_title( $post->post_parent ), 1 ) ); ?>" 
			   rev="attachment"><span class="meta-nav">&larr; </span><?php echo get_the_title( $post->post_parent ); ?></a>
		</h1>
		<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
			<header class="header">
				<nav id="nav-above" class="navigation">
					<div class="nav-previous"><?php previous_image_link( false, '&larr;' ); ?></div>
					<div class="nav-next"><?php next_image_link( false, '&rarr;' ); ?></div>
				</nav>
			</header>
			<section class="entry-content">
				<div class="entry-attachment">
				<?php if ( wp_attachment_is_image( $post->ID ) ) : $att_image = wp_get_attachment_image_src( $post->ID, "large" ); ?>
					<p class="attachment">
						<a href="<?php echo wp_get_attachment_url( $post->ID ); ?>"
					 	   title="<?php the_title(); ?>" rel="attachment">
							<img src="<?php echo $att_image[0]; ?>"
							     width="<?php echo $att_image[1]; ?>"
							     height="<?php echo $att_image[2]; ?>"
							     class="attachment-medium"
							     alt="<?php $post->post_excerpt; ?>">
						</a>
					</p>
				<?php else : ?>
					<a href="<?php echo wp_get_attachment_url( $post->ID ); ?>"
					   title="<?php echo esc_html( get_the_title( $post->ID ), 1 ); ?>"
					   rel="attachment"><?php echo basename( $post->guid ); ?></a>
				<?php endif; ?>
				</div>
				<div class="entry-caption"><?php if ( !empty( $post->post_excerpt ) ) the_excerpt(); ?></div>
				<?php if ( has_post_thumbnail() ) { the_post_thumbnail(); } ?>
			</section>
		</article>
		<?php comments_template(); ?>
	<?php endwhile; endif; ?>
<?php get_sidebar(); ?>
<?php get_footer(); ?>