Sortierung der Galerie - Attachment IDs

<?php get_header(); ?>
<?php get_sidebar(); ?>
			<div id="galeriecontainer">
				<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
					<div id="galerie" class="der-beitrag center galerie">
						<div id="panorama"> 
							<div id="panoramapicture">
								<a href="<?php echo wp_get_attachment_url($post->ID); ?>"><?php echo wp_get_attachment_image( $post->ID,'panorama' ); ?></a>
								<h3><a href="<?php the_permalink() ?>" rel="bookmark" title="Der Verweis (Permalink) zu: <?php the_title(); ?>"><?php the_title(); ?></a></h3>
							</div><!-- /#panoramapicture -->
							<div id="panoramatext">
								<?php if ( !empty($post->post_excerpt) )the_excerpt(); /* Bild-Überschrift */ ?>
								<?php the_content(); ?>
							</div><!-- /#panoramatext -->
						<div id="thumbnails">
							<?php function is_html($string)
									{
  										return preg_match("/<[^<]+>/",$string,$m) != 0;
									}
							?>
							<div id="left-thumbnail">
								<div id="left-thumbnail-image">
									<?php ob_start() ?>
									<?php previous_image_link('my_thumbnail') ?>
									<?php $previous_image = ob_get_clean() ?>
									<?php if (is_html($previous_image) == false): ?>
										<img src="/../wordpress/wp-content/themes/gemaeldeGallery/images/basic/Anfang1.png" align="middle" />
									<?php else: ?>
										<?php echo $previous_image ?>
										<p>Vorheriges Bild</p>
									<?php endif; ?>
								</div><!-- /#left-thumbnail-image -->
							</div><!-- /#left-thumbnail -->
							<div id="right-thumbnail">
								<div id="right-thumbnail-image">
									<?php ob_start() ?>
									<?php next_image_link('my_thumbnail') ?>
									<?php $next_image = ob_get_clean() ?>
									<?php if (is_html($next_image) == false): ?>
										<img src="/../wordpress/wp-content/themes/gemaeldeGallery/images/basic/Ende1.png" align="middle" />
									<?php else: ?>
										<?php echo $next_image ?>
										<p>Nächstes Bild</p>
									<?php endif; ?>
								</div><!-- /#right-thumbnail-image -->
							</div><!-- /#right-thumbnail -->
						</div><!-- /#thumbnails -->
						</div><!-- /#panorama -->
					</div> <!-- /#galerie -->
				<?php endwhile; else: ?>
						<p>Tut mir leid, es wurde kein passender Beitrag gefunden.</p>
				<?php endif; ?>
			</div><!-- /#galeriecontainer -->
<?php get_footer(); ?>