function image() { };  
   image = new image(); 
   number = 0;  
   // imageArray 
   image[number++] = "<img src='images/photo1.gif' border='0'>" 
   image[number++] = "<img src='images/photo2.gif' border='0'>"
   image[number++] = "<img src='images/photo3.gif' border='0'>"               
   increment = Math.floor(Math.random() * number);  document.write(image[increment]);