function image() { }; 
   image = new image();
   number = 0; 
   // imageArray
   image[number++] = "<img src='images/1.jpg'>"
   image[number++] = "<img src='images/2.jpg'>"
   image[number++] = "<img src='images/3.jpg'>"
   image[number++] = "<img src='images/4.jpg'>"
   image[number++] = "<img src='images/5.jpg'>"
   image[number++] = "<img src='images/6.jpg'>"
   image[number++] = "<img src='images/7.jpg'>"
   image[number++] = "<img src='images/8.jpg'>"
   increment = Math.floor(Math.random() * number);  document.write(image[increment]);