having problem creating a default controller

[eluser]UdayD[/eluser]
i have written my controller like

Code:

class main extends Controller
{
    function main()
    {
         parent::controller();
    }

function page()
{
$this->load->view('main/index');
}

do i need that name of function as index can i change it to name page.
or from where i need to change the function name from where the index function is called so that i can change to name " page" function