var mess = new Array('<p><img src="img/CVOgroepWEBsmall1.jpg" width="827" height="251"></p>','<p><img src="img/CVOgroepWEBsmall1.jpg" width="827" height="244"></p>');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);