Depth Attribute

Hello,

I am adapting WP as a CMS for our libraries website… the issue I have is that, on the furthes most pages of a branch (of the tree), there are no children… this makes my navigation look bear… I want to show the children of the previous layer (IE… The same NAV that was on the page that led to the outermost page)

my code is:

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

			if (is_page() && $post->post_parent ) {
				// This is a subpage
				echo "<ul>";
				wp_list_pages('depth=-2title_li=&&child_of='.$post->ID.'&echo=0');
				echo "</ul>";
			}
			?>

			<?php
			$children = wp_list_pages('depth=-2&title_li=&&child_of='.$post->ID.'&echo=0');
			if ($children) { ?>
<!--[if IE]>
<style> .highlight_2_col{margin-left: -00px !important;}</style>
<![endif]-->

			<div id="children">
				<ul>
					<?php echo $children; ?>
				</ul>
			</div>

can anyone help?

Thanks,
Wes Crockett