var mess = new Array('<img src="images/icon-baseball.png">','<img src="images/icon-basketball.png">','<img src="images/icon-bike.png">','<img src="images/icon-bowling.png">','<img src="images/icon-family.png">','<img src="images/icon-kite.png">','<img src="images/icon-soccer.png">');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);