show attachtment ID, and next attachtment ID

Hello dear,
this is my page query, to call all attachtment pictures in a page.
i need to count my images by numbers,
so each attachment, will got a unique number

<?php while ( have_posts() ) : the_post(); ?>
<?php
	$thumb_ID = get_post_thumbnail_id( $post->ID );
	if ( $images = get_children(array(
			'post_parent' => get_the_ID(),
			'post_type' => 'attachment',
			'post_mime_type' => 'image',
			'exclude' => $thumb_ID,
		))) : ?>
		<?php foreach($images as $image) {
$attachment=wp_get_attachment_image_src($image->ID, $size);  ?>
			<li style="list-style:none; width: 180px; height: 230px;float:left;margin-right:10px; background-color:#FFF;">
            <a href="#image-<strong>i</strong>"><img src="<?php bloginfo('template_directory'); ?>/includes/timthumb.php?src=<?php echo $attachment[0]; ?>&h=230&w=180&a=t&zc=1" />
<div class="lb-overlay" id="image-<strong>1</strong>"></a>
							<img src="images/full/1.jpg" alt="image01" />
							<div>
								<a href="#image-Latest-Image" class="lb-prev">Prev</a>
								<a href="#image-i+1" class="lb-next">Next</a>
							</div>
							<a href="#page" class="lb-close">x Close</a>
						</div>
            </li>
		<?php } ?>
<?php else: // No images ?>
	<!-- This post has no attached images -->
<?php endif; ?>
<?php endwhile; // end of the loop. ?>

also , i want to determine the next image, and latest image
Prev
Next

thanks so much