var request;
var rat;

function do_request() {
    if (window.ActiveXObject) {
        request = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else {
        request = new XMLHttpRequest();
    }
}


function rating(rating, id) {
    rat = rating;
    var url = "./ajax/rating.php?id=" + id + "&rating=" + rating;
    
    do_request();
    request.onreadystatechange = get_data;
    request.open("GET", url);
    request.send(null);
}

function get_data() {
    var rating = request.responseText;


    var area = document.getElementById("cell_rating");
    
    if (rating == 'ok') {
        area.innerHTML = "<b>&nbsp; &nbsp; &nbsp; Děkujeme za hodnocení !</b>";
    }
}


function over(el) {
    var i;
    var elem;

    for (i = 0; i <= el; i++) {
        elem = document.getElementById("rating" + i);
        elem.src = "grafika/star_middle.png";
    }    
}

function out() {
    var i;
    var el;
    
    for (i = 0; i <= 5; i++) {
        el = document.getElementById("rating" + i);
        el.src = "grafika/star_off.png";
    }
}