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) {
		mm_01_mm_03_over = newImage("images/navigation/mm_01-mm_03_over.jpg");
		mm_01_mm_07_over = newImage("images/navigation/mm_01-mm_07_over.jpg");
		mm_03_over = newImage("images/navigation/mm_03-over.jpg");
		mm_04_over = newImage("images/navigation/mm_04-over.jpg");
		mm_05_over = newImage("images/navigation/mm_05-over.jpg");
		mm_06_over = newImage("images/navigation/mm_06-over.jpg");
		mm_07_over = newImage("images/navigation/mm_07-over.jpg");
		mm_08_over = newImage("images/navigation/mm_08-over.jpg");
		mm_11_over = newImage("images/navigation/mm_11-over.jpg");
		mm_09_mm_03_over = newImage("images/navigation/mm_09-mm_03_over.jpg");
		mm_09_mm_04_over = newImage("images/navigation/mm_09-mm_04_over.jpg");
		mm_09_mm_05_over = newImage("images/navigation/mm_09-mm_05_over.jpg");
		mm_09_mm_06_over = newImage("images/navigation/mm_09-mm_06_over.jpg");
		mm_09_mm_07_over = newImage("images/navigation/mm_09-mm_07_over.jpg");
		mm_09_mm_08_over = newImage("images/navigation/mm_09-mm_08_over.jpg");
		mm_09_mm_11_over = newImage("images/navigation/mm_09-mm_11_over.jpg");
		preloadFlag = true;
	}
}