if (document.images) {
    img1 = new Image();
    img1.src = "./img/menu_btn_bck.png";
    img2 = new Image();
    img2.src = "./img/registreeru_on.gif";
    img3 = new Image();
    img3.src = "./img/arrow_left_on.gif";
    img4 = new Image();
    img4.src = "./img/arrow_right_on.gif";
	img5 = new Image();
    img5.src = "./img/registreeru_bck.png";
	img6 = new Image();
    img6.src = "./img/close.png";
    img7 = new Image();
    img7.src = "./img/pd_on.png";
}