ad after more

<?php
$content = get_extended($post->post_content);
if(empty($content)) :  ?>
<?php the_content(); ?>
<?php else : ?>
<?php
$content['main'] = $content['main'] . '<span id="more-' . $post->ID . '"></span>';
$first_content = apply_filters('the_content', $content['main']);
$second_content = apply_filters('the_content', $content['extended']);
echo $first_content;
?>
<?php endif; ?>

<div style="display:block;float:left;margin-top:0px;margin-right:15px;">
<script type="text/javascript">
  GA_googleFillSlot("CI_Article_Top");
</script>
</div>

<?php
if(!empty($content)) {
echo $second_content;
}
?>