banners = new Array(4);
banners[0] = "
Daft Punk
Alive 2007
29,90 no Submarino";
banners[1] = "
Amy Winehouse
Back to Black
24,90 no Submarino";
banners[2] = "
The White Stripes
Icky Thump
39,90 no Submarino";
banners[3] = "
Junior Senior
D-D-Don't Stop the Beat
35,90 no Submarino";
//calculate a random index
index = Math.floor(Math.random() * banners.length);
//display the banner
document.write(banners[index]);