function image() {
};

image = new image();
number = 0;

// imageArray
image[number++] = "<img src='imgs/random/foto010.jpg' border='0'>"
image[number++] = "<img src='imgs/random/foto011.jpg' border='0'>"
image[number++] = "<img src='imgs/random/foto012.jpg' border='0'>"
image[number++] = "<img src='imgs/random/foto013.jpg' border='0'>"
image[number++] = "<img src='imgs/random/foto015.jpg' border='0'>"
image[number++] = "<img src='imgs/random/foto016.jpg' border='0'>"
image[number++] = "<img src='imgs/random/foto017.jpg' border='0'>"


// keep adding items here...

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

document.write(image[increment]);