function generateRandom(x) {
  	var range = x;
  	return Math.floor(Math.random() * range) + 1;
	}

	var number1 = generateRandom(3);
	//alert (number1);
	var imageA = "<BR><img src=images/a" + number1 + ".jpg height=80 width=80 alt='image 1'><BR><BR>";
	document.write(imageA);
	
	var number1 = generateRandom(3);
	var imageB = "<img src=images/b" + number1 + ".jpg height=80 width=80 alt='image 2'><BR><BR>";
	document.write(imageB);
	
	var number1 = generateRandom(3);
	var imageC = "<img src=images/c" + number1 + ".jpg height=80 width=80 alt='image 3'><BR><BR>";
	document.write(imageC);