<?php
            $args = array(
                'orderby' => 'id',
                'order' => 'ASC',
                'taxonomy' => 'album'
            );

            $categories=get_categories($args);
            foreach($categories as $category) {
            if($category->parent!=0) {
        ?>
            <li class="span3">
                <div class="thumbnail">
                    <a href="<? bloginfo('url'); ?>/album/<?php echo $category->category_nicename; ?>" rel="nofollow">
                        <img src="<?php bloginfo('url'); ?>/covers/<?php echo $category->category_nicename; ?>.jpg" alt="">
                    </a>

                    <div class="caption">
                        <a href="<? bloginfo('url'); ?>/album/<? echo $category->category_nicename; ?>">
                            <? echo $category->parent . ' - ' . $category->name; ?>
                        </a>
                    </div>
                </div>
            </li>
        <?
                }
            }
        ?>