function avaliacao_setup(div)
{
    div = $(div);
    div._imgs = div.getElementsByTagName('img');
    $A(div.getElementsByTagName('img')).each(function (img) {
        img._src = img.src;
        Event.observe(img, 'mouseover', avaliacao_mouseover);
        Event.observe(img, 'click', avaliacao_click);
    });
    Event.observe(div, 'mouseout', avaliacao_mouseout);
}
function avaliacao_mouseover(e)
{
    var src = 'img/estrelas.gif';
    var img = Event.element(e);
    for (var i = 0; i < img.parentNode._imgs.length; i++) {
        img.parentNode._imgs[i].src = src;
        if (img.parentNode._imgs[i] == img) {
            src = 'img/estrelas2.gif';
        }
    }
}
function avaliacao_mouseout(e)
{
    var div = Event.findElement(e, 'div');
    for (var i = 0; i < div._imgs.length; i++) {
        div._imgs[i].src = div._imgs[i]._src;
    }
}
function avaliacao_click(e)
{
    var nota = 0;
    var img = Event.element(e);
    for (var i = 0; i < img.parentNode._imgs.length; i++) {
        img.parentNode._imgs[i]._src = img.parentNode._imgs[i].src;
        if (img.parentNode._imgs[i] == img) {
            nota = i + 1;
        }
    }
    filme = img.parentNode.id.match(/\d+$/)[0];
    img.parentNode._effect = new Effect.Pulsate(img.parentNode, {duration: 1});
    new Ajax.Request('sobre_filme.php', {
        parameters: 'filme=' + filme + '&nota=' + nota
    });
}