Ajax with not load and redirect needed.

Hey all,

I had posted this issue previously regarding my Ajax site navigation module not loading correctly. It would load on certain parts of the site and not others. After some research I have discovered that I need to redirect from "www.mydomain.com" and make a call to "mydomain.com" instead. I thought a 301 .htaccess redirect would work but according to the site that sold me the template the script in my configure.php file must be changed. This is what configure.php looks like now.

<?php
  define('HTTP_SERVER', 'http://mydomain.com');
  define('HTTPS_SERVER', 'https://mydomain.sslpowered.com/mydomain.com/');
  define('ENABLE_SSL', 'TRUE');
  define('HTTP_COOKIE_DOMAIN', 'mydomain.com');
  define('HTTPS_COOKIE_DOMAIN', 'mydomain.sslpowered.com/mydomain.com/');
  define('HTTP_COOKIE_PATH', '/mydomain.com/mysite/catalog/');
  define('HTTPS_COOKIE_PATH', '/mydomain.sslpowered.com/mydomain.com/mysite/catalog/');
  define('DIR_WS_HTTP_CATALOG', '/mysite/catalog/');
  define('DIR_WS_HTTPS_CATALOG', '/mysite/catalog/');
  define('DIR_WS_IMAGES', 'images/');
  define('DIR_WS_ICONS', DIR_WS_IMAGES . 'icons/');
  define('DIR_WS_INCLUDES', 'includes/');
  define('DIR_WS_BOXES', DIR_WS_INCLUDES . 'boxes/');
  define('DIR_WS_FUNCTIONS', DIR_WS_INCLUDES . 'functions/');
  define('DIR_WS_CLASSES', DIR_WS_INCLUDES . 'classes/');
  define('DIR_WS_MODULES', DIR_WS_INCLUDES . 'modules/');
  define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'languages/');

  define('DIR_WS_DOWNLOAD_PUBLIC', 'pub/');
  define('DIR_FS_CATALOG', '/mnt/w0505/d04/s10/b0308916/www/mydomain.com/mysite/catalog/');
  define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . 'download/');
  define('DIR_FS_DOWNLOAD_PUBLIC', DIR_FS_CATALOG . 'pub/');

  define('DB_SERVER', 'MYSQLHOST');
  define('DB_SERVER_USERNAME', 'u70670810');
  define('DB_SERVER_PASSWORD', '5bbfb4');
  define('DB_DATABASE', 'd60604658');
  define('USE_PCONNECT', 'false');
  define('STORE_SESSIONS', 'mysql');
?>

I am wondering what has to be changed in the script so it will make the call the the correct domain so the ajax script will load on all parts of the site.

Any help would be great.