function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		    }
}

var preloadFlag = false;
function preloadMenuImages(submenu, rootPath) {
	if (document.images) {
		menu_01_over = newImage(rootPath + "images/menu/menu_01-over.gif");
		menu_02_over = newImage(rootPath + "images/menu/menu_02-over.gif");
		menu_03_over = newImage(rootPath + "images/menu/menu_03-over.gif");
		menu_04_over = newImage(rootPath + "images/menu/menu_04-over.gif");
		menu_05_over = newImage(rootPath + "images/menu/menu_05-over.gif");
		menu_06_over = newImage(rootPath + "images/menu/menu_06-over.gif");
		menu_07_over = newImage(rootPath + "images/menu/menu_07-over.gif");
		
		if (submenu)
		{
			if (submenu == 2)
			{
				menu_02_01_over = newImage(rootPath + "images/menu/menu_02_01-over.gif");
				menu_02_02_over = newImage(rootPath + "images/menu/menu_02_02-over.gif");
				menu_02_03_over = newImage(rootPath + "images/menu/menu_02_03-over.gif");
			}
			if (submenu == 3)
			{
				menu_03_01_over = newImage(rootPath + "images/menu/menu_03_01-over.gif");
				menu_03_02_over = newImage(rootPath + "images/menu/menu_03_02-over.gif");
				menu_03_03_over = newImage(rootPath + "images/menu/menu_03_03-over.gif");
				menu_03_04_over = newImage(rootPath + "images/menu/menu_03_04-over.gif");
				menu_03_05_over = newImage(rootPath + "images/menu/menu_03_05-over.gif");
				menu_03_06_over = newImage(rootPath + "images/menu/menu_03_06-over.gif");
				menu_03_07_over = newImage(rootPath + "images/menu/menu_03_07-over.gif");
			}
			if (submenu == 4)
			{
				menu_04_01_over = newImage(rootPath + "images/menu/menu_04_01-over.gif");
				menu_04_02_over = newImage(rootPath + "images/menu/menu_04_02-over.gif");
				menu_04_03_over = newImage(rootPath + "images/menu/menu_04_03-over.gif");
				menu_04_04_over = newImage(rootPath + "images/menu/menu_04_04-over.gif");
				menu_04_05_over = newImage(rootPath + "images/menu/menu_04_05-over.gif");
				menu_04_06_over = newImage(rootPath + "images/menu/menu_04_06-over.gif");
				menu_04_07_over = newImage(rootPath + "images/menu/menu_04_07-over.gif");
				menu_04_08_over = newImage(rootPath + "images/menu/menu_04_08-over.gif");
			}
			if (submenu == 6)
			{
				menu_06_01_over = newImage(rootPath + "images/menu/menu_06_01-over.gif");
				menu_06_02_over = newImage(rootPath + "images/menu/menu_06_02-over.gif");
				menu_06_03_over = newImage(rootPath + "images/menu/menu_06_03-over.gif");
			}
		}
		preloadFlag = true;
	}
}