window.addEvent('domready', function (e) {
    actions = new Fx.Slide('actions', {duration:'short'});
    oldaction = '';
    actions.hide();

    if ($('a_login')) {
        $('a_login').addEvent('click', function (e) {
            e.stop();
            show_action('login');
        });
        $('a_register').addEvent('click', function (e) {
            e.stop();
            show_action('register');
        });
    }
});

function show_action(action) {
    if (actions.open && oldaction==action) {
        actions.slideOut();
    }
    else {
        $('actions').load('/'+action);
        actions.slideIn();
    }
    oldaction = action;
}