var timeDelay = 20; // change delay time in seconds
var Pix = new Array
("/images/last_call/01.jpg" 
,"/images/last_call/02.jpg"
,"/images/last_call/03.jpg"
,"/images/last_call/04.jpg"
,"/images/last_call/05.jpg"
);
var howMany = Pix.length;
var PicCurrentNum = 0;
var PicCurrent = new Image();
PicCurrent.src = Pix[PicCurrentNum];


function startPix() {
setInterval("slideshow()", timeDelay);
}


function nextimg() {
PicCurrentNum++;
if (PicCurrentNum == howMany) {
PicCurrentNum = 0;
}
PicCurrent.src = Pix[PicCurrentNum];
document["ChangingPix"].src = PicCurrent.src;
}


function previousimg() {
PicCurrentNum--;
if (PicCurrentNum == -1) {
PicCurrentNum = ( Pix.length - 1);
}
PicCurrent.src = Pix[PicCurrentNum];
document["ChangingPix"].src = PicCurrent.src;
}