function image() {
};

image = new image();
number = 0;

image[number++] = "<img src='random-smallreptile/image1.jpg' border='0' alt='Photograph from butterfly and reptile house'>"
image[number++] = "<img src='random-smallreptile/image2.jpg' border='0' alt='Photograph from butterfly and reptile house'>"
image[number++] = "<img src='random-smallreptile/image3.jpg' border='0' alt='Photograph from butterfly and reptile house'>"
image[number++] = "<img src='random-smallreptile/image4.jpg' border='0' alt='Photograph from butterfly and reptile house'>"
image[number++] = "<img src='random-smallreptile/image5.jpg' border='0' alt='Photograph from butterfly and reptile house'>"
image[number++] = "<img src='random-smallreptile/image6.jpg' border='0' alt='Photograph from butterfly and reptile house'>"
image[number++] = "<img src='random-smallreptile/image7.jpg' border='0' alt='Photograph from butterfly and reptile house'>"
image[number++] = "<img src='random-smallreptile/image8.jpg' border='0' alt='Photograph from butterfly and reptile house'>"


increment = Math.floor(Math.random() * number);

document.write(image[increment]);