Using following code you can able to display the subpages of parent page. Tutorial for wordpress get child pages of current page. We have given code sample in this article.
<?php $subpages = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0'); ?>
<?php if ($subpages) { ?>
<ul>
<?php echo $subpages; ?>
</ul>
<?php } ?>
Note: This code you need to copy paste in loop only.
Using following code you can able to display the subpages and subpages of that.
<?php
if($post->post_parent)
$subpages = wp_list_pages(“title_li=&child_of=”.$post->post_parent.”&echo=0″);
else
$subpages = wp_list_pages(“title_li=&child_of=”.$post->ID.”&echo=0″);
if ($subpages) { ?>
<ul>
<?php echo $subpages; ?>
</ul>
<?php } ?>
Using css you modify the UI of menu.
More details you can found on following page
http://codex.wordpress.org/Template_Tags/wp_list_pages
I have read a few of the articles on your website now, and I really like your style of blogging. I added it to my favorites website list and will be checking back soon. Please check out my site as well and let me know what you think.