arphotos=new Array(
  "photos/img1.jpg",
  "photos/img2.jpg",
  "photos/img3.jpg",
  "photos/img4.jpg",
  "photos/img5.jpg",
  "photos/img6.jpg",
  "photos/img7.jpg"

);

rand=Math.floor(arphotos.length*Math.random());
document.write('<img src="'+arphotos[rand]+'" width="368" height="230" alt="Rotating photos of Consumer Services Management">');