var rand1 = 0;
var useRand = 0;

images = new Array;
images[1] = new Image();
images[1].src = "images/image1.jpg";
images[2] = new Image();
images[2].src = "images/image2.jpg";
images[3] = new Image();
images[3].src = "images/image3.jpg";
images[4] = new Image();
images[4].src = "images/image4.jpg";
images[5] = new Image();
images[5].src = "images/image5.jpg";
images[6] = new Image();
images[6].src = "images/image6.jpg";
images[7] = new Image();
images[7].src = "images/image7.jpg";
images[8] = new Image();
images[8].src = "images/image8.jpg";
images[9] = new Image();
images[9].src = "images/image9.jpg";
images[10] = new Image();
images[10].src = "images/image10.jpg";
images[11] = new Image();
images[11].src = "images/image11.jpg";
images[12] = new Image();
images[12].src = "images/image12.jpg";

function swapPic()
{
	var imgnum = images.length - 1;
	do
	{
		var randnum = Math.random();
		rand1 = Math.round((imgnum - 1) * randnum) + 1;
	}
	while (rand1 == useRand);
	{
		useRand = rand1;
	}
	document.randimg.src = images[useRand].src;
}