<?php
// Get $post if you're inside a function
global $post;

if ( is_single('63') ) {
//
<div class="adsense-post">


<ul>

<?php
global $post;
$myposts = get_posts('numberposts=5&offset=1&category=187');
foreach($myposts as $post) :
?>
<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
<?php endforeach; ?>
</ul>


</div>
}

?>

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