var pic1 = new Image();
		var pic2 = new Image();
		var pic3 = new Image();
		var pic4 = new Image();
		var pic5 = new Image();
		
		pic1.src = "menu/menu_01_on.jpg";
		pic2.src = "menu/menu_02_on.jpg";
		pic3.src = "menu/menu_03_on.jpg";
		pic4.src = "menu/menu_04_on.jpg";
		pic5.src = "menu/menu_05_on.jpg";