showing the galleries separately

Hi Folks

I'm attempting to create a block that will show the thumbnails from a given gallery in the sidebar on the client's site.

Here's the original page I'm converting. Here's my development page. (never mind the design glitches for now)

What I want it to do is on "galleryx.html" (where x is a numeric value identifying that particular gallery -these are hardcoded based on the client's old site), the nav will show a thumbnail of each of the photos in that gallery. When you view any of the photos in that gallery, it still shows the thumbs from that gallery. This is the way the client's old site works, and it makes logical sense.

Through much frustrated Googling, I found some code that kind of did what I wanted. From that example, I created the following "module"(?)

/**
 * Implementation of hook_block.
 *
 * Offers 3 blocks: latest image and random image and a thumbnail gallery navigation
 */
function image_block($op, $delta = 0) {
  switch ($op) {
    case 'list':
      $block[0]['info'] = t('Latest image');
      $block[1]['info'] = t('Random image');
	  $block[2]['info'] = t('Gallery Thumbnail Nav');

      return $block;
    case 'view':
      if (user_access('access content')) {
        switch($delta) {
          case 0:
            $images = image_get_latest();
            $block['subject'] = t('Latest image');
            $block['content'] = l(image_display($images[0], 'thumbnail'), 'node/'.$images[0]->nid, array(), NULL, NULL, FALSE, TRUE);
            break;
          case 1:
            $images = image_get_random();
            $block['subject'] = t('Random image');
            $block['content'] = l(image_display($images[0], 'thumbnail'), 'node/'.$images[0]->nid, array(), NULL, NULL, FALSE, TRUE);
            break;
          case 2:
            $images = image_get_gallerynav();
            $block['subject'] = t('Gallery Nav');
            //$block['content'] = l(image_display($images[0], 'thumbnail'), 'node/'.$images[0]->nid, array(), NULL, NULL, FALSE, TRUE);
			$block['content'] = whistlerbrides_block_image_list();
            break;
        }
      }
      return $block;
  }
}

Which calls

/**
 * Fetch the current N image(s).
 */
function whistlerbrides_block_image_list() {

  $images = image_get_gallerynav(16, $this_nid);
  $output = '';
  foreach ($images as $image) {
   $output .= l(image_display($image, 'thumbnail'), 'node/'.$image->nid, array(), NULL, NULL, FALSE, TRUE);
  }

  return $output;
}

Which calls

/**
 * Fetch the images from the currently selected gallery.
 */
 
function image_get_gallerynav($count = 16, $tid=0) {
			
  if ($tid != 0) {
    $result = db_query_range(db_rewrite_sql("SELECT n.nid FROM {term_node} tn LEFT JOIN {node} n ON n.nid=tn.nid WHERE n.type='image' AND n.status=1 AND tn.tid=%d ORDER BY n.sticky DESC, n.changed DESC"), $tid, 0, $count);
  }
  else {
    $result = db_query_range(db_rewrite_sql("SELECT n.nid FROM {node} n WHERE n.type='image' AND n.status=1 ORDER BY changed DESC"), 0, $count);
  }
  $output = array();
  while ($nid = db_fetch_object($result)) {
    $output[] = node_load(array('nid' => $nid->nid));
  //print '<p>' . node_load(array('nid' => $nid->nid)) . '</p>';
  }
  return $output;
}

What I get for output is what you see in the example. I see thumbnails (hallelujah!) but they're from ALL the galleries. The problem is, of course,

function whistlerbrides_block_image_list()

There's nothing in this that collects "this current gallery". Clearly the code exists here someplace -- this is how the normal galleries work! I just want to move the gallery behaviour out of the main content area and into the nav section -- everything else should behave normally, I think. (except for my Issue regarding making the thumbnails appear as black and white (monochrome)...

So, to clarify, I need to figure out the correct variable that says "I am now viewing an image in Gallery X". I've tried $node->nid (which I've seen everywhere) like this:

function image_get_gallerynav($count = 16, $node->nid) {

And it throws an error.

I've tried snagging the current nid using $this_nid = arg(1) , but that doesn't get the gallery; it gets the -current- nid.

Help? Please?