var images = new Array();

// ********************************
// Add images below
// images.push ("Add URL here");
// ********************************

images.push ("http://ni.guildscentral.net/data/global/banner/1.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/2.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/3.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/4.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/5.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/6.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/7.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/8.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/9.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/10.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/11.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/12.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/13.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/14.jpg");
images.push ("http://ni.guildscentral.net/data/global/banner/15.jpg");

// ********************************
// Don't change anything below this line
// ********************************
var inc = Math.floor( Math.random() * images.length );
var img = "<style>#guildbanner {background: url("+ images[inc] +") no-repeat top center;}</style>";
document.write(img);