function image() { }; 
   image = new image();
   number = 0; 
   // imageArray
image[number++] = "<img src='../trofea-ujbuda/photos/f6.jpg' border='0'>"
image[number++] = "<img src='../trofea-ujbuda/photos/f8.jpg' border='0'>"
image[number++] = "<img src='../trofea-ujbuda/photos/f10.jpg' border='0'>"
image[number++] = "<img src='../trofea-ujbuda/photos/f12.jpg' border='0'>"
image[number++] = "<img src='../trofea-ujbuda/photos/f14.jpg' border='0'>"
image[number++] = "<img src='../trofea-ujbuda/photos/f32.jpg' border='0'>"

increment = Math.floor(Math.random() * number);  document.write(image[increment]);