var banners = new Array(); 
banners[0] = '<script type="text/javascript" src="http://js.affiliatelounge.com/javascript.php?prefix=n7kP3Xu3_AxoofBpZ-qTpmNd7ZgqdRLk&amp;media=13064&amp;campaign=1"></script>';
//banners[1] = '<script language=javascript src="http://adserving.unibet.com/ad.aspx?pid=19482&amp;bid=6514"></script>';
index = Math.floor(Math.random() * banners.length);
document.write(banners[index]);