// BOF categories tree
      $category_tree = '';
      $products_category_name = clean(zen_get_categories_name_from_product($product_id));
      $categories = $db->Execute("select c.categories_name from " . TABLE_CATEGORIES_DESCRIPTION . 
" c, " . TABLE_PRODUCTS_TO_CATEGORIES . " f where f.products_id = '" . (int)$product_id .
 "' and f.categories_id = c.categories_id AND c.language_id = '" . $_SESSION['languages_id']. "'");
      $cat_path = zen_get_product_path($product_id);
      $cat_path_array = zen_parse_category_path($cat_path);
      $path_pos = 0;
      
      while ($path_pos < sizeof($cat_path_array)) {
        $tmp_catid = $cat_path_array[$path_pos];
        if ($category_tree > '')
          $category_tree.= ' > ';
        $category_tree .= zen_get_category_name($tmp_catid, $_SESSION['languages_id']);
        $path_pos = $path_pos +1;
      }
      // EOF categories tree