/* menu / submenu */
var submenuBg1 = new Image();
submenuBg1.src = '../_img/submenuBg1.png';
var submenuBg2 = new Image();
submenuBg2.src = '../_img/submenuBg2.png';
var submenuBg3 = new Image();
submenuBg3.src = '../_img/submenuBg3.png';
var submenuBg4 = new Image();
submenuBg4.src = '../_img/submenuBg4.png';
var submenuBg5 = new Image();
submenuBg5.src = '../_img/submenuBg5.png';
var submenuBg6 = new Image();
submenuBg6.src = '../_img/submenuBg6.png';