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) {
		bar_01over = newImage("images/bar_01over.gif");
		bar_02over = newImage("images/bar_02over.gif");
		bar_03over = newImage("images/bar_03over.gif");
		bar_04over = newImage("images/bar_04over.gif");
		bar_05over = newImage("images/bar_05over.gif");
		bar_06over = newImage("images/bar_06over.gif");
		bar_07over = newImage("images/bar_07over.gif");
		bar_08over = newImage("images/bar_08over.gif");
		bar_09over = newImage("images/bar_09over.gif");
		bar_10over = newImage("images/bar_10over.gif");
		bar_11over = newImage("images/bar_11over.gif");
		bar_12over = newImage("images/bar_12over.gif");
		preloadFlag = true;
	} }