/// <reference path="jquery-1.5.1.min.js" />

// from http://www.progressive-coding.com/tutorial.php?id=6
var NUMBER_OF_STARS = 6;

function init_rating() {
    var ratings = document.getElementsByTagName('div');
    for (var i = 0; i < ratings.length; i++) {
        if (ratings[i].className != 'rating')
            continue;

        var rating = ratings[i].firstChild.nodeValue;
        ratings[i].removeChild(ratings[i].firstChild);
        if (rating > NUMBER_OF_STARS || rating < 0)
            continue;
        for (var j = 0; j < NUMBER_OF_STARS; j++) {
            var star = document.createElement('img');
            if (rating >= 1) {
                star.setAttribute('src', '/images/stars/rating_on.gif');
                star.className = 'on';
                rating--;
            }
            else if (rating < 1 && rating >= 0.25) {
                star.setAttribute('src', '/images/stars/rating_half.gif');
                star.className = 'half';
                rating = 0;
            }
            else {
                star.setAttribute('src', '/images/stars/rating_off.gif');
                star.className = 'off';
            }
            var widgetId = ratings[i].getAttribute('id').substr(7);
            star.setAttribute('id', 'star_' + widgetId + '_' + j);
            star.onmouseover = new Function("evt", "displayHover(" + widgetId + ", " + j + ");");
            star.onmouseout = new Function("evt", "displayNormal(" + widgetId + ", " + j + ");");
            ratings[i].appendChild(star);
        }
    }
}

function displayHover(ratingId, star) {
    for (var i = 0; i <= star; i++) {
        document.getElementById('star_' + ratingId + '_' + i).setAttribute('src', '/images/stars/rating_over.gif');
    }
}

function displayNormal(ratingId, star) {
    for (var i = 0; i <= star; i++) {
        var status = document.getElementById('star_' + ratingId + '_' + i).className;
        document.getElementById('star_' + ratingId + '_' + i).setAttribute('src', '/images/stars/rating_' + status + '.gif');
    }
}