// JavaScript Document

function changeBG(elementID) {
	var bgImages = new Array (
			"/depts/theology/images/masthead-prayer.jpg",
			"/depts/theology/images/masthead-reading.jpg",
			"/depts/theology/images/masthead-glass.jpg"
		);
		
	element = document.getElementById(elementID);
	if (element) {
		element.style.background = "url(" + bgImages[Math.floor(Math.random()*bgImages.length)] + ")";
	} else {}
}