var SlideShowSpeed = 3500;
var CrossFadeDuration = 3;
var Picture1 = new Array(); 
Picture1[1]  = 'images/img1.jpg';
Picture1[2]  = 'images/img2.jpg';
Picture1[3]  = 'images/img3.jpg';
Picture1[4]  = 'images/img4.jpg';
var tss;
var iss;
var jss = 1;
var pss = Picture1.length-1;
var preLoad = new Array();
for (iss = 1; iss < pss+1; iss++){
preLoad[iss] = new Image();
preLoad[iss].src = Picture1[iss];}

function runSlideShow(){
if (document.all){
document.images.PictureBox1.style.filter="blendTrans(duration=2)";
document.images.PictureBox1.style.filter="blendTrans(duration=CrossFadeDuration)";
document.images.PictureBox1.filters.blendTrans.Apply();}
document.images.PictureBox1.src = preLoad[jss].src;
if (document.all) document.images.PictureBox1.filters.blendTrans.Play();
jss = jss + 1;
if (jss > (pss)) jss=1;
tss = setTimeout('runSlideShow()', SlideShowSpeed);
}