function changeOpac(opacity, id) {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
}

function blendimage(divid, imageid, imagefile, millisec) {
    var speed = Math.round(millisec / 60);
    var timer = 0;

    document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
    changeOpac(0, imageid);
    document.getElementById(imageid).src = imagefile;


    for (i = 0; i <= 100; i++) {
        setTimeout("changeOpac(" + i + ",'" + imageid + "')", (timer * speed));
        timer++;
    }
}

var slideCache = new Array();
function RunSlideShow(divid, imageid, imageFiles, displaySecs) {
    var imageSeparator = imageFiles.indexOf(";");
    var nextImage = imageFiles.substring(0, imageSeparator);

    changeOpac(0, imageid);
    blendimage(divid, imageid, nextImage, 500);

    var futureImages = imageFiles.substring(imageSeparator + 1, imageFiles.length) + ';' + nextImage;
    setTimeout("RunSlideShow('" + divid + "','" + imageid + "','" + futureImages + "'," + displaySecs + ")", displaySecs * 1000);

    imageSeparator = futureImages.indexOf(";");
    nextImage = futureImages.substring(0, imageSeparator);
    if (slideCache[nextImage] == null) {
        slideCache[nextImage] = new Image;
        slideCache[nextImage].src = nextImage;
    }
}