images = new Array(5);

images[0] = "<a href = 'http://www.coffeeparts.com/machines/marzocco.html'><img src='http://www.coffeeparts.com/banners/banner-gs3.jpg' alt='NEW La Marzocco GS3' border='0'></a>";

images[1] = "<a href = 'http://www.coffeeparts.com/machines/stovetops.html'><img src='http://www.coffeeparts.com/banners/banner-lasorentina.jpg' alt='NEW La Sorentina Atomica' border='0'></a>";

images[2] = "<a href = 'http://www.coffeeparts.com/machines/vbm-domobar.html'><img src='http://www.coffeeparts.com/banners/banner-vbmdomobar.jpg' alt='VBM Domobar' border='0'></a>";

images[3] = "<a href = 'http://www.coffeeparts.com/machines/ecm.html'><img src='http://www.coffeeparts.com/banners/banner-giotto.jpg' alt='Giotto is Back' border='0'></a>";

images[4] = "<a href = 'http://www.coffeeparts.com/grinders/mazzer-mini.html'><img src='http://www.coffeeparts.com/banners/banner-mazzermini.jpg' alt='Mazzer Mini' border='0'></a>";

index = Math.floor(Math.random() * images.length);

document.write(images[index]);