Undefined index

[eluser]matt2012[/eluser]
Still having problems with this - thanks for your help but im still not getting it,

here's the problem again,

Code:

class Welcome extends Controller {

var $data = array();

    
    function  Welcome()
     {

    /////want this for all functions in controller - actually maybe all functions in all controllers?/////

    $data['js'] = array('init');
    $data['css'] = array('style');
    $data['page'] = 'home';
    $data['topform'] = 'login';
    $data['title'] = 'mysite| home';
    $data['keywords'] = 'great site';
    $data['description'] = 'this site is a ...';    
    $data['message'] = '';
  
        parent::Controller();    
        }

        function index()
        {
        //leave default settings set in constructor
        $this->load->view('container', $data);

        }

        function foo()
        {
        //overwrite title variable pass on rest unchanged
        $data['title'] = 'easy2health | foo';
        $this->load->view('container', $data);
        }

hope you can help its a real stumbling block that I think will help me understand classes and how they work a lot better!