var mess = new Array('<img src="/images/homepage/second-column/image-one.jpg" alt=""/>','<img src="/images/homepage/second-column/image-two.jpg" alt=""/>','<img src="/images/homepage/second-column/image-three.jpg" alt=""/>','<img src="/images/homepage/second-column/image-four.jpg" alt=""/>');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);