// JavaScript Document
  function random_img1(num1,num2) {
    if((num1 - num2) > 0) {
	  var big = num1
	  var small = num2
	} else {
	  var big = num2
	  var small = num1
	}
  var range = big - small + 1
  var number = Math.floor(Math.random()*range) + small
  return(number)
  }
   
  function random_img2() {
     var img_src = "img" + random_img1(1,2) + ".jpg"
	 document.write("<IMG SRC='" + img_src + "'>")
  }