function printImage() {
NumberOfImagesToRotate = 8;
FirstPart = '<style>div.content-in {background: url(/images/sideimages/sideimage';
LastPart = '.jpg) no-repeat right 20px;}</style>';
var r = Math.ceil(Math.random() * NumberOfImagesToRotate);
document.write(FirstPart + r + LastPart);
}