Annoying Home Page Validation (Just one Error)

[limelites]

Something's telling me it's in this file, but I can't seem to fix it. Everything I try seems to make it worse. Can you see anything in this file that can be causing it?

<?php
/**
 * @copyright Copyright 2009 Glenn Herbert
 * @copyright Copyright 2003-2006 Zen Cart Development Team
 * @copyright Portions Copyright 2003 osCommerce
 * @license http://www.gnu.org/licenses/ GNU Public License V3.0
 * includes/functions/extra_functions/categories_dressing_functions.php
 * Categories Dressing v2.6  - Glenn Herbert (gjh42)   - 20090128 
 */

function cat_active_level_manage($path) {
  $skip_cat = 0;
  if (defined('CAT_BOX_ACTIVE_LEVEL')) {
    $cat_box_active_level = explode('|',constant('CAT_BOX_ACTIVE_LEVEL'));
    $current_top = (int)$_GET['cPath'];
    $iteration_top = (int)$path; // set = this iteration's topcat
    $cat_depth = substr_count($path,'_');
    //tests for various kinds of skipping - more can be added
    $skip_cat = $skip_cat + ($cat_box_active_level[0] == 1 and $current_top != $iteration_top)?1:0;
    $skip_cat = $skip_cat + ($cat_box_active_level[0] == 2 and $current_top != $iteration_top and $current_top != 0)?1:0;
    $skip_cat = $skip_cat + ($cat_box_active_level[1] > $cat_depth and $cat_box_active_level[0] != 2)?1:0;
    $skip_cat = $skip_cat + ($cat_box_active_level[2] < $cat_depth)?1:0;
  }//defined
  return $skip_cat;
}


function cat_ul_manage($current_path, &$prev_cat_depth, $new_group) {
  $ul_content = '';
  $cat_depth = substr_count($current_path,'_');
  if ($cat_depth > $prev_cat_depth) {
    $ul_content .= str_repeat('<ul>',(($cat_depth - $prev_cat_depth) - $new_group)) . "\n";
  } elseif ($cat_depth < $prev_cat_depth) {
    $ul_content .= str_repeat('</ul>',(($prev_cat_depth - $cat_depth) + $new_group)) . "\n";
  } else {
    $ul_content .= $new_group?'</ul>':'';
  }
  $ul_content .= $new_group?'<ul id="catGroup' . $current_path . '">' . "\n":'';
  $prev_cat_depth = $cat_depth;
  return $ul_content;
}

function cat_box_heading($current_path) {
  $heading_content = '';
  $new_group = 0;
  if (defined('CAT_BOX_HEADING_' . $current_path)) {
    $cat_box_heading = explode('|',constant('CAT_BOX_HEADING_' . $current_path));
    if ($cat_box_heading[0]) {
      $new_group = 1;
    }
    if ($cat_box_heading[1]) {
      $heading_content .= '<hr class="catBoxDivider' . $cat_box_heading[1] . '" />' . "\n"; 
    }
    if ($cat_box_heading[2]) {
      //display image if exists for category name in current language - with title tag
      $heading_content .= file_exists(DIR_WS_TEMPLATE . 'buttons/' . $_SESSION['language'] . '/' . $cat_box_heading[2]) ? '<div class="catBoxHeadingImg">' . zen_image(DIR_WS_TEMPLATE . 'buttons/' . $_SESSION['language'] . '/' . $cat_box_heading[2], $cat_box_heading[3]) . '</div>' . "\n":$cat_box_heading[3] . "\n";
    }
    $i=4;
    while ($i<(sizeof($cat_box_heading)-1)) {
      $heading_content .= '<div class="catBoxHeading' . $cat_box_heading[$i+1] . '">' .  $cat_box_heading[$i] . '</div>' . "\n";
      $i = $i+2;
    }
  }
  return array($new_group,$heading_content);
}
    
function cat_name_display($cat_name_display, $current_path) {
  $cat_img_bg = '';
  //display image if exists for category name in current language - with title tag
  if (file_exists(DIR_WS_TEMPLATE . 'buttons/' . $_SESSION['language'] . '/catimg' . $current_path . '.gif')) {
    $cat_name_display = zen_image(DIR_WS_TEMPLATE . 'buttons/' . $_SESSION['language'] . '/catimg' . $current_path . '.gif', '', '', '', 'title="' . $cat_name_display . '"'); 
  //display background image if exists for category name in current language - with title tag
  } elseif (file_exists(DIR_WS_TEMPLATE . 'buttons/' . $_SESSION['language'] . '/catbg' . $current_path . '.gif')) {
    $cat_name_display = zen_image(DIR_WS_TEMPLATE_IMAGES . 'pixel_trans.gif', '', '100%', '100%', 'title="' . $cat_name_display . '"');
    $cat_img_bg = ' catBg' . $current_path;
  } else {
    $cat_img_bg = '-text';//append to main classname
  }
  return array($cat_img_bg, $cat_name_display);
}

function cat_box_subtext($current_path) {
  $subtext = '';
  if (defined('CAT_BOX_SUBTEXT_' . $current_path)) {
    $cat_box_subtext = explode('|',constant('CAT_BOX_SUBTEXT_' . $current_path));
    $subtext .= '<div class="catBoxSubtext' . $cat_box_subtext[1] . '">' . $cat_box_subtext[0] . '</div>' . "\n";
  }
  return $subtext;
}
?>