<!-- 
if (document.getElementById) { window.onload = swap };

function swap() {
var numimages=8;
rndimg = new Array("/images/background-image.jpg", "/images/background-image1.jpg", "/images/background-image2.jpg" , "/images/background-image3.jpg" , "/images/background-image4.jpg" , "/images/background-image5.jpg" , "/images/background-image6.jpg", "/images/background-image7.jpg"); 
x=(Math.floor(Math.random()*numimages));
randomimage=(rndimg[x]);
document.body.style.backgroundImage = "url("+ randomimage +")"; 
}
//-->