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

function changeMenuImages() {
	if (document.images && (preloadMenuFlag == true)) {
		for (var i=0; i<changeMenuImages.arguments.length; i+=2) {
			document.images[changeMenuImages.arguments[i]].src = changeMenuImages.arguments[i+1];
		}
	}
}

var preloadMenuFlag = false;
function preloadMenuImages() {
	if (document.images) {
        var m21 = newImage("img/menu/menu_top_21_over.gif");
		var m22 = newImage("img/menu/menu_top_22_over.gif");
		var m23 = newImage("img/menu/menu_top_23_over.gif");
		var m24 = newImage("img/menu/menu_top_24_over.gif");
		var m31 = newImage("img/menu/menu_top_31_over.gif");
		var m32 = newImage("img/menu/menu_top_32_over.gif");
		var m33 = newImage("img/menu/menu_top_33_over.gif");
		var m41 = newImage("img/menu/menu_top_41_over.gif");
		var m42 = newImage("img/menu/menu_top_42_over.gif");
		var m43 = newImage("img/menu/menu_top_41_over.gif");
		var m51 = newImage("img/menu/menu_top_51_over.gif");
		var m52 = newImage("img/menu/menu_top_52_over.gif");
		var m61 = newImage("img/menu/menu_top_61_over.gif");
		var m62 = newImage("img/menu/menu_top_62_over.gif");
		var m63 = newImage("img/menu/menu_top_63_over.gif");
		var m64 = newImage("img/menu/menu_top_64_over.gif");
		var m71 = newImage("img/menu/menu_top_71_over.gif");
		preloadMenuFlag = true;
	}
}