display a breadcrumb trail of page ancestors, with alternative cases for custom post types

breadcrumbs.php

<?php

$type = get_post_type();
$ancestors = array_reverse(get_post_ancestors($post->ID));

if( $type == 'page'   ) : ?>
		<nav id="breadcrumbs">
			<ul>
			<?php foreach($ancestors as $ancestor): ?>
				<li><a href="<?php echo get_permalink($ancestor); ?>"><?php echo get_the_title($ancestor); ?></a></li>
			<?php endforeach ?>
				<li><a href="<?php echo get_permalink($post->ID); ?>"><?php echo $post->post_title; ?></a></li>
			</ul>
		</nav>
<?php elseif( $type == 'journal' ): ?>
		<nav id="breadcrumbs">
			<ul>
				<li><a href="<?php echo get_permalink(PageIDs::resources); ?>">Resources</a></li>
				<li><a href="<?php echo get_permalink(443); ?>">Learning Cultures Journal</a></li>
				<li><a href="<?php echo get_term_link(43,'journal_issue'); ?>"><?php echo '2012'; ?></a></li>
				<li><a href="<?php echo get_permalink($post->ID); ?>"><?php echo truncate_text($post->post_title,40); ?></a></li>
			</ul>
		</nav>
<?php elseif( $type == 'practitioner' ): ?>
		<nav id="breadcrumbs">
			<ul>
				<li><a href="<?php echo get_permalink(PageIDs::practitioners); ?>">Practitioners</a></li>
				<li><a href="<?php echo get_permalink(443); ?>">type</a></li>
				<li><a href="<?php echo get_permalink($post->ID); ?>"><?php echo $post->post_title; ?></a></li>
			</ul>
		</nav>
<?php endif; ?>