need help with a module edit

<?php
// ----------------------------------------------------------------------
// POST-NUKE Content Management System
// Copyright (C) 2001 by the Post-Nuke Development Team.
// http://www.postnuke.com/
// ----------------------------------------------------------------------
// Based on:
// PHP-NUKE Web Portal System - http://phpnuke.org/
// ----------------------------------------------------------------------
// LICENSE
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License (GPL)
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// To read the license please visit http://www.gnu.org/copyleft/gpl.html
// ----------------------------------------------------------------------
// Filename: modules/NS-Link_To_Us/index.php
// Original Author of file: Crick Da Crack
// Purpose of file: Let's user make links to the PostNuke site
// ----------------------------------------------------------------------
// Changelog
// 03/10/02 - Crick : Started this little module
// ----------------------------------------------------------------------

if (!defined("LOADED_AS_MODULE")) {
  die ("You can't access this file directly...");
}

$ModName = $GLOBALS['name'];

//Change the value of those vars if you need to

$lts_imgdir = "modules/$ModName/img/"; //Use $ModName for the module name. Default : modules/$ModName/img/

//Here the script, don't edit if you don't know what your doing !!!

modules_get_language();

$modurl="modules.php?op=modload&name=$ModName&file=index";
$sitename = pnConfigGetVar('sitename');
$slogan = pnConfigGetVar('slogan');
$baseurl = pnGetBaseURL();

include 'header.php';
OpenTable();
  echo "<font class=\"pn-title\"><a href=\"".$modurl."\">"._LTS_TITLE." ".$sitename."</a></font><br><br>";
  if (!$link) {
    $lts_dir = opendir($lts_imgdir);
    $lts_filelist = array();
    $lts_ext = array('.jpg','.gif','.png');
    $i = 0;
    while ($file = readdir($lts_dir)) {
      if ((strrchr($file,'.gif') == '.gif') || (strrchr($file,'.jpg') == '.jpg') || (strrchr($file,'.png') == '.png') || (strrchr($file,'.bmp') == '.bmp')) {
        $lts_filelist[$i] = $file;
        $i++;
      }
    }
    CloseDir($lts_dir);
    if (empty($lts_filelist)) {
      echo _LTS_NOIMG."<br><br>";
      echo "<form action=\"modules.php?op=modload&name=$ModName&file=index\" method=\"post\">"
        ._LTS_YOURCHOICE."<br><select size=\"1\" name=\"link\">"
        ."<option selected value=\"text\">"._LTS_TEXT."</option>";
    }
    else {
      echo _LTS_BLIST."<br><br>";
      $i = 0;
      while ($lts_filelist[$i]) {
        echo "<img src=\"$lts_imgdir/$lts_filelist[$i]\" alt=\"$lts_filelist[$i]\"> ";
        $i++;
      }
      echo "<form action=\"modules.php?op=modload&name=$ModName&file=index\" method=\"post\">"
        ._LTS_YOURCHOICE."<br><select size=\"1\" name=\"link\">"
        ."<option selected value=\"text\">"._LTS_TEXT."</option>";
      $i = 0;
      while ($lts_filelist[$i]) {
        echo "<option>".$lts_filelist[$i]."</otpion>";
        $i++;
      }
    }
    echo "</select><br><input type=\"submit\" value=\""._LTS_SUBMIT."\">"
      ."</form>";

  }
  else {
    if ($link == "text") {
      echo _LTS_PREVIEW."<br><a href=\"".$baseurl."\">".$sitename." :: ".$slogan."</a><br><br>";
      echo _LTS_CODE."<br><textarea rows=\"4\" cols=\"80\"><a href=\"".$baseurl."\">".$sitename." :: ".$slogan."</a></textarea><br><br>";
    }
    else {
      if (file_exists($lts_imgdir.$link)) {
        echo _LTS_PREVIEW."<br><a href=\"".$baseurl."\"><img src=\"".$baseurl.$lts_imgdir.$link."\" alt =\"".$sitename." :: ".$slogan."\" border=\"0\"></a><br><br>";
        echo _LTS_CODE."<br><textarea rows=\"4\" cols=\"80\"><a href=\"".$baseurl."\"><img src=\"".$baseurl.$lts_imgdir.$link."\" alt =\"".$sitename." :: ".$slogan."\" border=\"0\"></a></textarea><br><br>";
      }
      else echo _LTS_ERRIMG."<br><br>";
    }
  }
CloseTable();
echo "<br>";
OpenTable();
  echo "Link To Us Module 0.1 : Crick Da Crack (<a href=\"http://hell.eenixweb.com\" target=\"_blank\">Web</a>/<a href=\"mailto:hell@[removethis]hell.eenixweb.com\">Email</a>)";
CloseTable();
include 'footer.php';


?>