var mess = new Array('<img src="/images/rotator-ph-4.jpg" alt=""/>','<img src="/images/rotator-ph-4b.jpg" alt=""/>','<img src="/images/rotator-ph-4c.jpg" alt=""/>','<img src="/images/rotator-ph-4d.jpg" alt=""/>');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);