images = new Array(3);			
images[0] = "<img src='image-home/photo1.jpg' alt='Summer College photos' border='0' />";			
images[1] = "<img src='image-home/photo2.jpg' alt='Summer College photos' border='0' />";	
images[2] = "<img src='image-home/photo3.jpg' alt='Summer College photos' border='0' />";	
index = Math.floor(Math.random() * images.length);			
document.write(images[index]);