var mess = new Array('<img src="banner1.jpg" width="774" height="196">','<img src="banner2.jpg" width="774" height="196">','<img src="banner3.jpg" width="774" height="196">','<img src="banner4.jpg" width="774" height="196">','<img src="banner5.jpg" width="774" height="196">','<img src="banner6.jpg" width="774" height="196">','<img src="banner7.jpg" width="774" height="196">','<img src="banner8.jpg" width="774" height="196">','<img src="banner9.jpg" width="774" height="196">','<img src="banner10.jpg" width="774" height="196">','<img src="banner11.jpg" width="774" height="196">');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);