/*****

Image Cross Fade Redux
Version 1.0
Last revision: 02.15.2006
steve@slayeroffice.com

Please leave this notice intact. 

Rewrite of old code found here: http://slayeroffice.com/code/imageCrossFade/index.html


*****/


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;

    imgs = d.getElementById("imageContainer").getElementsByTagName("img");
    for (i = 1; i < imgs.length; i++) imgs[i].xOpacity = 0;
    
    // Download the first and the next Images
    download(imgs[0], 0);
    download(imgs[1], 1);
    
    imgs[0].style.display = "block";
    imgs[0].xOpacity = .99;

    //22/11/2010 jezp - Increased to 4 secs
    //setTimeout(so_xfade, 2000);
    setTimeout(so_xfade, 4000);
}

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

    //Download next image after this one
    var dIndex = imgs[nIndex + 1] ? nIndex + 1 : 0;
    download(imgs[dIndex], dIndex);

    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;
        //22/11/2010 jezp - Increased to 4 secs
        //setTimeout(so_xfade, 2000);
        setTimeout(so_xfade, 4000);
    } else {
        setTimeout(so_xfade,75);
    }

    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) + ")";
    }

}

function SetWindowStatus() {
    var div = document.getElementById('imageContainer');
    var d = div.getElementsByTagName('a');
    for (var i = 0; i < d.length; i++) {
        d[i].onmouseover = function() { window.status = ' '; return true; };
    }
}

function download(Image, img_src) {
    // preload the image file
    Image.src = images[img_src];
}