var pause = 5000;
var n = 0;
var imgs = new Array("images/ball.jpg", "images/hmdave.jpg", "images/fun.jpg");
var preload = new Array();

for( var i = 1; i < imgs.length; i++ )
{
	preload[i] = new Image();
	preload[i].src = imgs[i];
}

function rotate()
{
 	document.images.pic.src = imgs[n];
	if (n == (imgs.length -1) )
		n = 0;
	else
 		n++;
	setTimeout("rotate()", pause);
}