loading alternative layout

gistfile1.txt

<?php
class MembersController extends AppController {
	
	var $name       = 'Members';
	var $helpers    = array('Html','Javascript','Form','Time');
	var $components = array('Session','RequestHandler');
	var $uses       = array();	
	
	function index() {
		// Works, will load the ajax.ctp layout
		// http://localhost/members/index
		$this->layout = 'ajax';
	}
	
	
	function signup() {
		// Does not work, loads the default.ctp layout
		//http://localhost/members/signup
		$this->layout = 'ajax';
	}
}
?>