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) {
  ho_over = newImage("images/ho-over.gif");
  fr_over = newImage("images/fi-over.gif");
  ap_over = newImage("images/ap-over.gif");
  cb_over = newImage("images/cb-over.gif");
  qu_over = newImage("images/qu-over.gif");
  co_over = newImage("images/co-over.gif");
  li_over = newImage("images/li-over.gif");
  preloadFlag = true;
 }
}



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) {
		af_over = newImage("images/af-over.gif");
		if_over = newImage("images/if-over.gif");
		preloadFlag = true;
	}
}