related-posts two col

<h3> Related Posts</h3>
<?php if ($related_query->have_posts()):?>
<ul class="related-posts">
    <?php while ($related_query->have_posts()) : $related_query->the_post(); ?>
    <li class="<?php echo ($oddeven = ($oddeven == 'odd') ? 'even' : 'odd'); ?>">  <?php $postimageurl = get_post_meta($post->ID, 'image', true); if ($postimageurl) { ?>
            <a href="<?php the_permalink(); ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><img src="<?php bloginfo('stylesheet_directory'); ?>/thumb.php?src=<?php echo $postimageurl; ?>&h=150&w=300&zc=1&q=100" alt="<?php the_title(); ?>" width="300" height="150"/><br /></a>
            <?php } else { ?>
            <a href="<?php the_permalink(); ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><img src="<?php bloginfo('stylesheet_directory'); ?>/thumb.php?src=<?php bloginfo('stylesheet_directory'); ?>/default.jpg&h=100&w=100&zc=1&q=100" alt="<?php the_title(); ?>" width="200" height="100"/></a>
            <?php } ?>
            <a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a>

            <p class="post_meta"><span class="details"><?php _e('Archived in ', 'woothemes' ); ?> <?php the_category(', ') ?></span></p></li>

    <?php endwhile; ?>
</ul>
<div class="clear-list"></div>

<?php else: ?>
<p>No related posts.</p>
<?php endif; ?>

styles for this:
.related-posts li.odd { float:left; width: 50%; clear:left; }
.related-posts li.even { float:left; width: 50%; }
.clear-list { float:none; clear: both; display:block; visibility: hidden; }