/** Automatic Login.
 *  Supposing that the user is not signed on, simply redirect to a page
 *  containing the user slot (may be also only the PHP and not the template)
 */
function login($username, $passwd) {
    $goto = & new url();
    header("Location: index.php?page=home&action=login&username=".$username."&passwd="
        .$passwd."&goto=".urlencode($goto->Build()));
    exit();
}