var timeDelay = 50;
var Pix = new Array
("twin_jet1.gif" 
,"twin_jet2.gif" 
,"twin_jet3.gif" 
);
var howMany = Pix.length;
timeDelay *= 50;
var PicCurrentNum = 0;
var PicCurrent = new Image();
PicCurrent.src = Pix[PicCurrentNum];
function startPix() {
setInterval("slideshow()", timeDelay);
}
function slideshow() {
PicCurrentNum++;
if (PicCurrentNum == howMany) {
PicCurrentNum = 0;
}
PicCurrent.src = Pix[PicCurrentNum];
document["ChangingPix"].src = PicCurrent.src;
}