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) {
		bmenu1_over = newImage("images/bmenu1-over.gif");
		bmenu2_over = newImage("images/bmenu2-over.gif");
		bmenu3_over = newImage("images/bmenu3-over.gif");
		bmenu4_over = newImage("images/bmenu4-over.gif");
		bmenu5_over = newImage("images/bmenu5-over.gif");
		bmenu6_over = newImage("images/bmenu6-over.gif");
		preloadFlag = true;
	}
}