// JavaScript Document

 if (document.getElementById) {
 	window.onload = swap 
	};
 	function swap() {
	var numimages=5;
	rndimg = new Array
	rndimg[0] = "images/background1.jpg"
	rndimg[1] = "images/background2.jpg"
	rndimg[2] = "images/background3.jpg"
	rndimg[3] = "images/background4.jpg"
	rndimg[4] = "images/background5.jpg"
	x=(Math.floor(Math.random()*numimages));
	randomimage=(rndimg[x]);
	document.getElementById("backgrnd").style.backgroundImage = "url("+ randomimage + ")";
	}