var mess = new Array('<img src="../images/logos1_09.gif">','<img src="../images/logos2_09.gif">','<img src="../images/logos3_09.gif">','<img src="../images/logos4_09.gif">','<img src="../images/logos5_09.gif">');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);