yapb plugin – thumbnail and category issue

Hello,

I am using a very nice plugin to create a photoblog: YAPB
The issue with this plugin is the use of thumbnails, to restrict thumbnails in a sidebar to a category being displayed is quite difficult.

Although I was able to figure this part out, my current problem is:
when a thumbnail of a category is clicked on, the other thumbnails under that category magically disappear.

I have set up the code to be dynamic so as many categories/subcategories can be added with no need to update the code.
I’m really really close to getting this done….
I just need help from someone who is more capable in php then me!

<?php
$categories=get_categories('');
foreach ($categories as $cat){
    if (is_category($cat->cat_ID)) {
		query_posts('cat='.$cat->cat_ID.'&showposts=-1');
	  while (have_posts()) : the_post();?>
         <?php  if ($post->image): ?>
<li><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><img src="<?php echo $post->image->getThumbnailHref(array('w=100','fltr[]=usm|30|0.5|3')) ?>" alt="<?php the_title() ?>" title="<?php the_title() ?>" width="100"/></a> </li>
<?php endif; endwhile;
    }
}
?>

please, any thoughts, feedback is greatly appreciated!

thanks,
pvfe