if (document.getElementById) { window.onload = swap };
function swap() {
var numimages=7;
rndimg = new Array("images/bannermain.gif", "images/features-banner.gif", "images/resources-banner.gif", "images/solutions-banner.gif", "images/technology-banner.gif", "images/banner-quote6.gif", "images/banner-quote7.gif");x=(Math.floor(Math.random()*numimages));
randomimage=(rndimg[x]);
document.getElementById("banner").style.backgroundImage = "url("+ randomimage +")"; 
}