Single post sidebar at the bottom of the page in firefox

My single post page is all messed up in firefox, but it is fine in google chrome. The comments are showing up where the sidebar is supposed to be. I checked for any incomplete </div> marks but I couldn’t find any. The site is charliesheenfacts.com and the single page script is below. I put it in a table to straighten something else out, but took it out and it wasn’t the problem. Thank you. My theme is pagelines.

<table>
<?php get_header(); ?>
<div id=”columns”>
<div id=”centercol”>
<?php $urlHome = get_bloginfo(‘template_directory’); ?>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class=”box post” id=”post-<?php the_ID(); ?>”>
<div class=”content”>
<div class=”comm_count”>” title=”View all posts in <?php the_title_attribute(); ?>” rel=”category tag”>
<?php comments_number(0, 1, ‘%’); ?>
</div>
<div class=”post-title”>
<h2>” rel=”title” title=”<?php the_title_attribute(); ?>”>
<?php the_title(); ?>
</h2>
</div>
<!–/post-title –>
<div class=”post-date”>On
<?php the_time(‘m.d.y’); ?>
 |  In
<?php the_category(‘, ‘) ?>

</div>
<!–/post-date –>
<?php $postimageurl = get_post_meta($post->ID, ‘post-img’, true); if ($postimageurl) { ?>
<div class=”pic”>” rel=”bookmark” title=”Permanent Link to <?php the_title_attribute(); ?>”><img src=”<?php echo $postimageurl; ?>” alt=”<?php the_title_attribute(); ?>” /></div>
<?php } ?>
<!–/post-img –>
<div class=”blog-content”>
<div class=”post-excerpt”>
<?php the_content(‘<p class=”serif”>Read the rest of this entry »</p>’); ?>
</div>
<!–/post-excerpt –>
</div>
<div class=”clr”>
</div>
<!–/content –>
</div>
<!–/box –>
<div class=”clr”></div>
<div class=”box post”>
<div class=”content border”>
<div class=”pic fl”><?php echo get_avatar(get_the_author_email(), $size = ’80’, $default = $urlHome . ‘/images/avatar.gif’ ); ?></div>

<div class=”clr”></div>
</div>
<!–/content –>
<div class=”clr”></div>
</div>
<!–/box –>
<div id=”respond” class=”box” style=”padding:10px 0;”>
<div class=”content border”></div>
<div class=”fl”>If you enjoyed this article, please consider sharing it!</div>
<div class=”fr”>&title=<?php the_title(); ?>” title=”Bookmark at Delicious” rel=”nofollow” target=”_blank”><img src=”<?php bloginfo(‘template_directory’); ?>/images/ico-soc1.gif” alt=”Icon” /> ” title=”Bookmark at Mixx” rel=”nofollow” target=”_blank”><img src=”<?php bloginfo(‘template_directory’); ?>/images/ico-soc2.gif” alt=”Icon” /> &title=<?php the_title(); ?>” title=”Bookmark at StumbleUpon” rel=”nofollow” target=”_blank”><img src=”<?php bloginfo(‘template_directory’); ?>/images/ico-soc3.gif” alt=”” /> &title=<?php the_title(); ?>” title=”Bookmark at Digg” rel=”nofollow” target=”_blank”><img src=”<?php bloginfo(‘template_directory’); ?>/images/ico-soc4.gif” alt=”Icon” /> </div>
<div class=”clr”></div>
</div>
<div class=”clr”></div>
</div>
<!–/box –>
<div class=”box post-rel”>
<div class=”content border”>
<div class=”subcols”>
<div class=”col1″>
</div>
<!–/col1 –>
<div class=”col2″>
<h2>Popular Posts</h2>
<?php
foreach ( (array) taccess_popular_posts() as $_post ) : ?>
<div class=”th fl”>ID); ?>”><img src=”<?php echo get_post_meta($_post->ID, ‘post-img’, true); ?>” alt=”” /></div>
<div>ID); ?>”><?php echo $_post->post_title; ?></div>
<div class=”hl2″></div>
<?php endforeach; ?>
</div>
<!–/col1 –>
</div>
<div class=”clr”></div>
<!–/subcols –>
</div>
<!–/content –>
</div>
<!–/box –>
<?php comments_template(); ?>
<?php endwhile; else: ?>
<p>Sorry, no posts matched your criteria.</p>
<?php endif; ?>
<!–/centercol –>
</div>
<?php get_sidebar(); ?>
<div class=”clr”></div>

<!–/columns –>
<?php get_footer(); ?>
</table>