Wordpress: Separate comments from trackbacks

gistfile1

<?php
// Find:
foreach ($comments as $comment) :
    // Comments are displayed here
endforeach;
?>

<?php 
// And replace with: 
?>
<ul class="commentlist">
    <?php //Displays comments only
	foreach ($comments as $comment) : ?>
       	<?php $comment_type = get_comment_type(); ?>
       	<?php if($comment_type == 'comment') { ?>
	    <li>//Comment code goes here</li>
	<?php }
    endforeach;
  ?>
</ul>

<ul>
<?php //Displays trackbacks only
	foreach ($comments as $comment) : ?>
    <?php $comment_type = get_comment_type(); ?>
      <?php if($comment_type != 'comment') { ?>
	      <li><?php comment_author_link() ?></li>
  <?php }
  endforeach;
  ?>
</ul>