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) {
		btn_home_over = newImage("images/btn_home-over.jpg");
		btn_aboutUs_over = newImage("images/btn_aboutUs-over.jpg");
		btn_specialEvent_over = newImage("images/btn_specialEvent-over.jpg");
		btn_homeMade_over = newImage("images/btn_homeMade-over.jpg");
		btn_candyStore_over = newImage("images/btn_candyStore-over.jpg");
		btn_contactUs_over = newImage("images/btn_contactUs-over.jpg");
		preloadFlag = true;
	}
}