Mybb Blueimp ajax shoutbox help

[Lauri Forsman]

Hi

I dont understand what i should replace here to get Shoutbox to portal:

<?php
function getShoutBoxContent() {
// URL to the chat directory:
if(!defined('AJAX_CHAT_URL')) {
	define('AJAX_CHAT_URL', './chat/');
}

// Path to the chat directory:
if(!defined('AJAX_CHAT_PATH')) {
	define('AJAX_CHAT_PATH', realpath(dirname($_SERVER['SCRIPT_FILENAME']).'/chat').'/');
}

// Validate the path to the chat:
if(@is_file(AJAX_CHAT_PATH.'lib/classes.php')) {
	
	// Include Class libraries:
	require_once(AJAX_CHAT_PATH.'lib/classes.php');
	
	// Initialize the shoutbox:
	$ajaxChat = new CustomAJAXChatShoutBox();
	
	// Parse and return the shoutbox template content:
	return $ajaxChat->getShoutBoxContent();
}

return null;
}
?>

Thanks for help :)