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) {
		main_03_over = newImage("images/main_03-over.gif");
		main_04_over = newImage("images/main_04-over.gif");
		main_05_over = newImage("images/main_05-over.gif");
		main_06_over = newImage("images/main_06-over.gif");
		main_07_over = newImage("images/main_07-over.jpg");
		main_08_over = newImage("images/main_08-over.jpg");
		main_09_over = newImage("images/main_09-over.jpg");
		main_10_over = newImage("images/main_10-over.jpg");
		main_22_over = newImage("images/main_22-over.gif");
		main_23_over = newImage("images/main_23-over.gif");
		main_24_over = newImage("images/main_24-over.gif");
		main_25_over = newImage("images/main_25-over.gif");
		main_26_over = newImage("images/main_26-over.gif");
		main_27_over = newImage("images/main_27-over.gif");
		main_28_over = newImage("images/main_28-over.gif");
		main_29_over = newImage("images/main_29-over.gif");
		main_30_over = newImage("images/main_30-over.gif");
		main_31_over = newImage("images/main_31-over.gif");
		main_32_over = newImage("images/main_32-over.gif");
		main_lighting_over = newImage("images/main_lighting-over.gif");
		preloadFlag = true;
	}
}