var timeDelay = 3; // change delay time in seconds

var Pix = new Array
("images/31.jpg","images/32.jpg","images/33.jpg","images/34.jpg","images/35.jpg","images/36.jpg","images/37.jpg","images/38.jpg","images/39.jpg","images/40.jpg","images/41.jpg","images/42.jpg");
var howMany = Pix.length;
var StartPic = randomnum(howMany);

timeDelay *= 1000;
var PicCurrentNum = StartPic;
var PicCurrent = new Image();
PicCurrent.src = Pix[StartPic];

function startPix() 
{
	document["ChangingPix"].src = PicCurrent.src;
	setInterval("slideshow()", timeDelay);
}

function slideshow() 
{
	PicCurrentNum = randomnum(howMany);
	PicCurrent.src = Pix[PicCurrentNum];
	document["ChangingPix"].src = PicCurrent.src;
}

function randomnum(max)
{
	random_num = (Math.round((Math.random()*(max-1))+1))
	return random_num
}