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) {
		kooru_15_over = newImage("http://www.kooru.com:81/images/kooru_15-over.gif");
		kooru_16_over = newImage("http://www.kooru.com:81/images/kooru_16-over.gif");
		kooru_57_over = newImage("http://www.kooru.com:81/images/kooru_57-over.gif");
		kooru_58_over = newImage("http://www.kooru.com:81/images/kooru_58-over.gif");
		kooru_59_over = newImage("http://www.kooru.com:81/images/kooru_59-over.gif");
		kooru_60_over = newImage("http://www.kooru.com:81/images/kooru_60-over.gif");
		kooru_61_over = newImage("http://www.kooru.com:81/images/kooru_61-over.gif");
		kooru_62_over = newImage("http://www.kooru.com:81/images/kooru_62-over.gif");
		kooru_63_over = newImage("http://www.kooru.com:81/images/kooru_63-over.gif");
		kooru_64_over = newImage("http://www.kooru.com:81/images/kooru_64-over.gif");
		kooru_65_over = newImage("http://www.kooru.com:81/images/kooru_65-over.gif");
		kooru_66_over = newImage("http://www.kooru.com:81/images/kooru_66-over.gif");
		kooru_67_over = newImage("http://www.kooru.com:81/images/kooru_67-over.gif");
		kooru_68_over = newImage("http://www.kooru.com:81/images/kooru_68-over.gif");
		kooru_69_over = newImage("http://www.kooru.com:81/images/kooru_69-over.gif");
		preloadFlag = true;
	}
}