function image() {
};
image = new image();
number = 0;
// imageArray
image[number++] = "<img src='/images/fun_stuff.jpg' border='0'>"
image[number++] = "<img src='/images/try.jpg' border='0'>"
image[number++] = "<img src='images/round.jpg' border='0'>"
// keep adding items here...
increment = Math.floor(Math.random() * number);
document.write(image[increment]);