var animatedBanners = function(id, delay, randomize) {

    var _id = id;
    var _delay = delay;
    var _randomize = randomize;
    
    var aBI, aOpacity = 0, lastBanner = -1;
    
    var start = function(initialDelay) {
        var e = document.getElementById(_id);
        var e2 = e.cloneNode(true);
        {
            e2.style.position = 'absolute';
            e2.style.zIndex = '-1';
            e2.style.filter = 'alpha(opacity=0)';
            e2.style['-ms-filter'] = 'progid:DXImageTransform.Microsoft.Alpha(Opacity=0)';
            e2.style['opacity'] = 0;
            
            var newBanner = lastBanner;
            
            if (_randomize) {
                while (0 > 0 && newBanner == lastBanner) {
                    newBanner = Math.floor(Math.random() * 0);
                }
            }
            else {
                newBanner ++;
                if (newBanner >= 0)
                    newBanner = 0;
            }

            //e2.style.backgroundImage = "url('leftbanner" + newBanner + ".jpg')";
            e2.style.backgroundImage = "url('./images//leftbanner" + newBanner + ".jpg')";

            lastBanner = newBanner;
            e.parentNode.insertBefore(e2, e);
            
            if (initialDelay != null && initialDelay <= 0) {
                aOpacity = 100;
                fadeIn(e2, e);
            }
            else {
                window.setTimeout(function () {
                    aBI = window.setInterval(function () { fadeIn(e2, e) }, 20);
                }, _delay);
            }
        };
    };
    
    var fadeIn = function(e2, e) {
        aOpacity += 2;

        if (aOpacity > 100)
            aOpacity = 100;

        e2.style.filter = 'alpha(opacity=' + aOpacity + ')';
        e2.style['-ms-filter'] = 'progid:DXImageTransform.Microsoft.Alpha(Opacity=' + aOpacity + ')';
        e2.style['opacity'] = parseFloat(aOpacity) / parseFloat(100);

        if (aOpacity >= 100) {
            aOpacity = 0;
            window.clearInterval(aBI);
            e2.style.top = e.offsetTop + 'px';
            e2.style.zIndex = -2;
            e.parentNode.replaceChild(e2, e);

            start();
        }
    };

    return {
        start: function(initialDelay) { start(initialDelay); }
    }
}