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

function changeImages() {
	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) {
		fh_over = newImage("images/fh-over.gif");
		pcl_over = newImage("images/pcl-over.gif");
		bp_over = newImage("images/bp-over.gif");
		faq_over = newImage("images/faq-over.gif");
		rc_over = newImage("images/rc-over.gif");
		wn_over = newImage("images/wn-over.gif");
		cu_over = newImage("images/cu-over.gif");
		home_over = newImage("images/home-over.gif");
		preloadFlag = true;
	}
}