function allRatings() {
    var isRatingAll = $("#ratingAll").attr("checked");
    var ratings = $("input[id*=rating_]");
    for (var i = 0; i < ratings.length; i++) {
        var rating = ratings[i];
        rating.checked = isRatingAll;
    }
}

function clickRating() {
    var ratings = $("input[id*=rating_]");
    var ratingAll = true;
    for (var i = 0; i < ratings.length; i++) {
        var rating = ratings[i];
        if (!rating.checked) {
            ratingAll = false;
            break;
        }
    }
    if ($("#ratingAll").length > 0) {
        $("#ratingAll").attr("checked", ratingAll);
    }
}