Navigation Menu for sections based on parent and grandparent 02

This code inserts the the sub pages of a parent page, and also the parent page as a link.

	// will display the subpages of this top level page
	$children = wp_list_pages("title_li=&child_of=".$post->ID."&echo=0");
	// diplays only the subpages of parent level
	//$children = wp_list_pages("title_li=&child_of=".$post->post_parent."&echo=0");
		// now you can get the the top ID of this page
		// wp is putting the ids DESC, thats why the top level ID is the last one
		$ancestors = end($post->ancestors);
		$children = wp_list_pages("title_li=&child_of=".$ancestors."&echo=0");
		// you will always get the whole subpages list
if ($children) { ?>
		$parent_link = get_permalink($post->post_parent);
		$parent_title = get_the_title($post->post_parent);
		if ($post->post_parent) {
			echo "<li><a href='".$parent_link."'>".$parent_title."</a></li>";
		} else {
			echo "<li class='current_page_item'><a href='".$parent_link."'>".$parent_title."</a></li>";
		<?php echo $children; ?>
<?php } ?>


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