function preloadimages() {
//var imgdir = "images/";
var imgdir = "images/";
box1 = new Image;box1.src = imgdir+"drop_bg.gif";
box2 = new Image;box2.src = imgdir+"body_bg.gif";
box3 = new Image;box3.src = imgdir+"shadow_right1.gif";
box4 = new Image;box4.src = imgdir+"bg_front.gif";
box5 = new Image;box5.src = imgdir+"corner_bl.gif";
box6 = new Image;box6.src = imgdir+"shadow_left.gif";
box7 = new Image;box7.src = imgdir+"shadow_right.gif";
box8 = new Image;box8.src = imgdir+"sponka.gif";
box9 = new Image;box9.src = imgdir+"shadow_left_dark.gif";
box10 = new Image;box10.src = imgdir+"shadow_right_dark.gif";
box11 = new Image;box11.src = imgdir+"detail_corner_tr.gif";
box12 = new Image;box12.src = imgdir+"detail_bg.gif";
box13 = new Image;box13.src = imgdir+"detail_corner_br.gif";
box14 = new Image;box14.src = imgdir+"error_bg.gif";
box15 = new Image;box15.src = imgdir+"shadow_left1.gif";
box16 = new Image;box16.src = imgdir+"button_bottom.gif";
box17 = new Image;box17.src = imgdir+"button_green1_klikd.gif";
box18 = new Image;box18.src = imgdir+"button_green2_klikd.gif";
box19 = new Image;box19.src = imgdir+"button_green3_klikd.gif";
}