Vitrine/app/View/Helper/HtmlExtHelper.php

<?php

App::uses('HtmlHelper', 'View/Helper/');

/**
 * Application helper
 *
 * Add your application-wide methods in the class below, your helpers
 * will inherit them.
 *
 * @package       app.View.Helper
 */
class HtmlExtHelper extends HtmlHelper {

	private $activeClass = 'active';
	
	public function currentPage($action) {
		return ($this->request->params['action'] == $action ? $this->activeClass : '');
	}

	public function simpleURL($action) {
		return $this->url(array('controller' => 'pages', 'action' => $action));
	}

}