Плагин который добавляет в HEAD - link type=text/css - Разработка расширений для Joomla 2.5

<link type='text/css' href='typography.css' rel='stylesheet'>

$doc = JFactory::getDocument();
$doc->addStyleSheet('/path/you.file.css');

$doc->addCustomTag("<link type='text/css' href='typography.css' rel='stylesheet'>" );

$styleSheets = JFactory::getDocument()->_styleSheets;
$newStyles = array();
$url = 'путь к стилю который надо вывести первым';
$newStyles[$url] = array( 'mime'=>'text/css', 'media'=>'', 'attribs'=>'' );
JFactory::getDocument()->_styleSheets = $newStyles + $styleSheets;

function Mytypography()
{
	$styleSheets = JFactory::getDocument()->_styleSheets;
	$newStyles = array();
	$url = '/plugins/system/mytypography/typography.css';
	$newStyles[$url] = array( 'mime'=>'text/css' );
	JFactory::getDocument()->_styleSheets = $newStyles + $styleSheets;
}
Mytypography();

<?php
defined( '_JEXEC' ) or die;

class plgSystemMytypography extends JPlugin
{
	/**
	 * Class Constructor
	 * @param object $subject
	 * @param array $config
	 */
	public function __construct( & $subject, $config )
	{
		parent::__construct( $subject, $config );
		$this->loadLanguage();
	}

$wwwww=$this->params->get('typography_fontawesome');

}

<?php
defined( '_JEXEC' ) or die;

class plgSystemMytypography extends JPlugin
{
	/**
	 * Class Constructor
	 * @param object $subject
	 * @param array $config
	 */
	public function __construct( & $subject, $config )
	{
		parent::__construct( $subject, $config );
		$this->loadLanguage();
	}
	function onAfterInitialise(){ 
		$wwwww=$this->params->get('typography_fontawesome');
		var_dump($wwwww); 
	}
}