// JavaScript Document

if (document.getElementById) { window.onload = swap };
function swap() {
var numimages=3;
rndimg = new Array("/Content/Frs-safe/images/hp_header.jpg", "/Content/frs-safe/images/hp_header2.jpg", "/Content/frs-safe/images/hp_header3.jpg"); 
x=(Math.floor(Math.random()*numimages));
randomimage=(rndimg[x]);
document.getElementById("hpheader").style.backgroundImage = "url("+ randomimage +")"; 
}