function newImage(arg) {
		if (document.images) {
			rslt = new Image();
			rslt.src = arg;
			return rslt;
		}
	}

	function changeImages(imgName) {
			if (document.images && (preloadFlag == true)) {
				for (var i=0; i<changeImages.arguments.length; i+=2) {
					document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
				}
			}
		}
	
	var preloadFlag = false;
	function preloadImages() {
		if (document.images) {
		  home2 = newImage("../images/nav/mcrc-logo-over.gif");
			about2 = newImage("../images/nav/about-over.gif");
			active2 = newImage("../images/nav/active-over.gif");
			clinical2 = newImage("../images/nav/about-clinical-over.gif");
			cancer2 = newImage("../images/nav/cancer-over.gif");
			resources2 = newImage("../images/nav/resources-over.gif");
			members2 = newImage("../images/nav/member-over.gif");
			contact2 = newImage("../images/nav/contact-over.gif");
			index2 = newImage("../images/nav/index-over.gif");
			feedback2 = newImage("../images/nav/feedback-over.gif");
			preloadFlag = true;
		}
	}