var slideShowSpeed = 5000
var crossFadeDuration = 3
var Pic = new Array()

Pic[0] = '/images/L1.jpg';
Pic[1] = '/images/L2.jpg';
Pic[2] = '/images/L3.jpg';
Pic[3] = '/images/L4.jpg';

Pic[4] = '/images/R1.jpg';
Pic[5] = '/images/R2.jpg';
Pic[6] = '/images/R3.jpg';
Pic[7] = '/images/R4.jpg';

var t
var j = 0
var p = Pic.length

var preLoad = new Array()
for (i = 0; i < p; i++) {
    preLoad[i] = new Image()
    preLoad[i].src = Pic[i]
}

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 runSlideShow() {
    if (document.all) {
        document.getElementById('imgLeftUrl').style.filter = "blendTrans(duration=2)";
        document.getElementById('imgLeftUrl').style.filter = "blendTrans(duration=crossFadeDuration)";
        document.getElementById('imgLeftUrl').filters.blendTrans.Apply();

        document.getElementById('imgRightUrl').style.filter = "blendTrans(duration=2)";
        document.getElementById('imgRightUrl').style.filter = "blendTrans(duration=crossFadeDuration)";
        document.getElementById('imgRightUrl').filters.blendTrans.Apply();
    }
    document.getElementById('imgLeftUrl').style.backgroundImage = 'url(' + preLoad[j].src + ')';
    document.getElementById('imgRightUrl').style.backgroundImage = 'url(' + preLoad[j + 4].src + ')';
    if (document.all) {
        document.getElementById('imgLeftUrl').filters.blendTrans.Play();
        document.getElementById('imgRightUrl').filters.blendTrans.Play();
    }
    j = j + 1;
    if (j > (p - 5)) j = 0;
    t = setTimeout('runSlideShow()', slideShowSpeed);
}