if (document.images) {
    img1 = new Image();
    img1.src = "./img/menu_arw.png";
	img2 = new Image();
    img2.src = "./img/btn_on.png";
	img3 = new Image();
    img3.src = "./img/pd_on.png";
	img4 = new Image();
    img4.src = "./img/bck_15.png";
	img5 = new Image();
    img5.src = "./img/bck_97.png";
}