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

function swap() {
var numimages=5;
rndimg = new Array(
	"/women/images/home/home1.jpg", 
	"/women/images/home/home2.jpg", 
	"/women/images/home/home3.jpg",
	"/women/images/home/home4.jpg", 
	"/women/images/home/home6.jpg");
x=(Math.floor(Math.random()*numimages));
randomimage=(rndimg[x]);
document.getElementById("header").style.backgroundImage = "url("+ randomimage +")"; 
}