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) {
		Top_02_03_01_over = newImage("images/Top_02_03_01-over.png");
		Top_02_03_03_over = newImage("images/Top_02_03_03-over.png");
		Top_02_03_05_over = newImage("images/Top_02_03_05-over.png");
		Top_02_03_07_over = newImage("images/Top_02_03_07-over.png");
		Top_02_03_09_over = newImage("images/Top_02_03_09-over.png");
		Top_02_03_11_over = newImage("images/Top_02_03_11-over.png");
		Top_02_03_13_over = newImage("images/Top_02_03_13-over.png");
		Top_02_03_15_over = newImage("images/Top_02_03_15-over.png");
		Top_02_03_17_over = newImage("images/Top_02_03_17-over.png");
		Top_02_03_19_over = newImage("images/Top_02_03_19-over.png");
		Top_04_02_over = newImage("images/Top_04_02-over.png");
		Top_04_04_over = newImage("images/Top_04_04-over.png");
		Top_04_06_over = newImage("images/Top_04_06-over.png");
		Top_04_08_over = newImage("images/Top_04_08-over.png");
		Top_04_10_over = newImage("images/Top_04_10-over.png");
		Main_03_02_02_over = newImage("images/Main_03_02_02-over.png");
		Main_03_02_04_over = newImage("images/Main_03_02_04-over.png");
		Main_03_02_06_over = newImage("images/Main_03_02_06-over.png");
		Main_03_02_08_over = newImage("images/Main_03_02_08-over.png");
		Main_03_02_10_over = newImage("images/Main_03_02_10-over.png");
		preloadFlag = true;
	}
}