var rating = 0;


function SetRating(stars)
{
    rating = 0;
    HideStars(stars);
    ShowStars(stars);
    document.getElementById('rating').innerHTML = "Your rating: " + stars;
    document.getElementById('r').value = stars;
    rating = stars;
    return false;
}


function ShowStars(stars)
{
    if (rating == 0) {
        for (var i = 1; i <= stars; i++) {
            document.images['star'+i].src = "/img/gold.png";
        }
    }
    return false;
}


function HideStars()
{
    if (rating == 0) {
        for (var i = 1; i <= 5; i++) {
            document.images['star'+i].src = "/img/gray.png";
        }
    }
    return false;
}


function getCookie(name) {
	var cookie = " " + document.cookie;
	var search = " " + name + "=";
	var setStr = null;
	var offset = 0;
	var end = 0;
	if (cookie.length > 0) {
		offset = cookie.indexOf(search);
		if (offset != -1) {
			offset += search.length;
			end = cookie.indexOf(";", offset)
			if (end == -1) {
				end = cookie.length;
			}
			setStr = unescape(cookie.substring(offset, end));
		}
	}
	return(setStr);
}

function CheckForm()
{
    var cookie = getCookie('SESSID');
    // add additional field
    var hid = document.createElement("input");
    hid.type = "hidden";
    hid.name = "r_check";
    hid.value = getCookie("SESSID");
    document.forms['comment'].appendChild(hid);
    
    return true;
}