banners = new Array(2);
banners[0] = "
Lobão
Acústico MTV: Lobão
16,90 no Submarino";
banners[1] = "
Kayne West
Graduation
24,90 no Submarino";
//calculate a random index
index = Math.floor(Math.random() * banners.length);
//display the banner
document.write(banners[index]);