Nice, clean breadcrumb function

breadcrumb.php

function otm_breadcrumb(){
	global $post;

    $trail = '';

    $page_title = get_the_title($post->ID);

    if($post->post_parent) {
        $parent_id = $post->post_parent;

        while ($parent_id) {
            $page = get_page($parent_id);
            $breadcrumbs[] = '<a href="' . get_permalink($page->ID) . '">' . get_the_title($page->ID) . '</a> > ';
            $parent_id = $page->post_parent;
        }

        $breadcrumbs = array_reverse( $breadcrumbs );
        foreach($breadcrumbs as $crumb) $trail .= $crumb;
    } else {
	    return '';
    }

    $trail .= $page_title;
    $trail .= '';

    echo $trail;

}