dyadica.net

<?php
$this_category = get_category($cat);
if (get_category_children($this_category->cat_ID) != "") {
?>

<ul class='catsublist'>
<h2>Subcategories</h2>
<?php wp_list_categories('orderby=id&show_count=0&title_li=
&use_desc_for_title=1&child_of='.$this_category->cat_ID); ?>
</ul>

<?php } ?>