I'm using the grid layout and want to add a unique class or id to the product listing div on a category page.. I've tried editing product_listing.php but I can't figure it out. I am an html/css expert, but a total hack when it comes to php and scripting.

This code is from my product_listing.php
Code:
    // Following code will be executed only if Column Layout (Grid Layout) option is chosen
    if (PRODUCT_LISTING_LAYOUT_STYLE == 'columns') {
      $lc_text = implode('<br />', $product_contents);
      $list_box_contents[$rows][$column] = array('params' => 'class="centerBoxContentsProducts back"' . ' ' . 'id="I want to add a unique ID here but need help!!!!!"'   ,
                                                 'text'  => $lc_text);
      $column ++;
      if ($column >= PRODUCT_LISTING_COLUMNS_PER_ROW) {
        $column = 0;
        $rows ++;
      }
    }
    // End of Code fragment for Column Layout (Grid Layout) option in add on module


my site:
http://www.cynthiadesser.com/store/i...2rkumus5llf512


Any help would be greatly appreciated!!! Thanks!