display common data accross all pages

[eluser]atno[/eluser]
what i'm trying to do is


MY_Controller

Code:

class MY_Controller extends CI_Controller {
    function __construct()
    {
        parent::__construct();
        $data = array();
        $data['top_right'] = $this->manage_model->top_right();
    }

a_view.php

Code:

var_dump($top_right);

but i get

Code:

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: top_right

Filename: views/arxiki.php

Line Number: 1

what am i doing wrong?