window.addEventListener ? window.addEventListener('load', so_init, false) : window.attachEvent('onload', so_init);

var d = document, imgs = new Array(), zInterval = null, current = 0, pause = false;

function so_init() {
    if (!d.getElementById || !d.createElement) return;

    css = d.createElement('link');
    css.setAttribute('href', '/css/slideshow4.css');
    css.setAttribute('rel', 'stylesheet');
    css.setAttribute('type', 'text/css');
    d.getElementsByTagName('head')[0].appendChild(css);

    imgs = d.getElementById('rotator').getElementsByTagName('a');
    for (i = 1; i < imgs.length; i++) imgs[i].xOpacity = 0;
    imgs[0].style.display = 'block';
    imgs[0].xOpacity = .99;

    setTimeout(so_xfade, 9000);
}

function so_xfade() {
    cOpacity = imgs[current].xOpacity;
    nIndex = imgs[current + 1] ? current + 1 : 0;
    nOpacity = imgs[nIndex].xOpacity;

    cOpacity -= .05;
    nOpacity += .05;

    imgs[nIndex].style.display = 'block';
    imgs[current].xOpacity = cOpacity;
    imgs[nIndex].xOpacity = nOpacity;

    setOpacity(imgs[current]);
    setOpacity(imgs[nIndex]);

    if (cOpacity <= 0) {
        imgs[current].style.display = 'none';
        current = nIndex;
        setTimeout(so_xfade, 9000);
    }
    else {
        setTimeout(so_xfade, 50);
    }

    function setOpacity(obj) {
        if (obj.xOpacity > .99) {
            obj.xOpacity = .99;
            return;
        }

        obj.style.opacity = obj.xOpacity;
        obj.style.MozOpacity = obj.xOpacity;
        obj.style.filter = 'alpha(opacity=' + (obj.xOpacity * 100) + ')';
    }
}