var nextImage = 1;

function pageLoad() {

    var el = document.getElementById(imageContainer);
    while (el.firstChild) { el.removeChild(el.firstChild); }

    for(var i = 0; i < images.length; i++) {
        var t = document.createElement('IMG');
        t.setAttribute('src',images[i]);
        //t.setAttribute('width',imageWidth);
        //t.setAttribute('height',imageHeight);
        t.style.position = 'absolute';
        t.style.visibility = 'hidden';
        el.appendChild(t);
    }

    el.firstChild.style.visibility = 'visible';

    window.setTimeout(startFading, imageTimeout);

}

function startFading() {

    var el = document.getElementById(imageContainer).childNodes[nextImage];

    el.style.visibility = 'visible';
    el.style.zIndex = 2;
    setOpacity(el, 0);
    fadeImage(el,0);

    nextImage = (nextImage < images.length - 1) ? nextImage + 1 : 0;

}

function fadeImage(el, currentOpacity) {

    currentOpacity += 5;

    if (currentOpacity > 100) {
        setOpacity(el, 100);
        var prevEl = el.previousSibling ? el.previousSibling : el.parentNode.lastChild;
        prevEl.style.visibility = 'hidden';
        el.style.zIndex = 1;
        window.setTimeout(startFading, imageTimeout);
    }
    else {
        setOpacity(el, currentOpacity);
        window.setTimeout(function() { fadeImage(el, currentOpacity); }, 50);
    }
    
}

addToOnload(pageLoad);