<?php
if ($post->post_parent) {
$ancestors=get_post_ancestors($post->ID);
$root=count($ancestors)-1;
$parent = $ancestors[$root];
} else {
$parent = $post->ID;
}
$children = wp_list_pages(“title_li=<h3>&child_of=”. $parent .”&echo=0″);
?>
<div id=”sidebar”>
<div id=”wrapbox”>
<?php if ( !function_exists(‘dynamic_sidebar’) || !dynamic_sidebar() ) : ?> <?php endif; ?>
<div>
<ul>
<? if ($children) { ?>
<?php echo $children; ?>
<? }?>
</ul>
</div>