var backgroundSrcs = new Array("/GEO/images/GEO-banner-1.jpg","/GEO/images/GEO-banner-2.jpg","/GEO/images/GEO-banner-3.jpg","/GEO/images/GEO-banner-4.jpg")

function pickimage(){
	//This line picks an image at random from the list you entered above
	var bgimage=backgroundSrcs[(Math.round(Math.random()*(backgroundSrcs.length-1)))]
	
	//This line applies the background image to your masthead
	document.getElementById("heroContent").style.background = "url('" + bgimage + "') no-repeat";
	} 
	
function start() {
  pickimage();
 // startList();
}

window.onload = start;