if (navigator.appVersion.substring(0,1) >= 3)
{
	a1 = new Image (139,33); a1.src = "./img/menu/ekowc.gif";
  a1_2 = new Image (139,33); a1_2.src = "./img/menu/ekowc2.gif";

  a2 = new Image (139,30); a2.src = "./img/menu/nabidka.gif";
  a2_2 = new Image (139,30); a2_2.src = "./img/menu/nabidka2.gif";

  a3 = new Image (139,30); a3.src = "./img/menu/provoz.gif";
  a3_2 = new Image (139,30); a3_2.src = "./img/menu/provoz2.gif";

  a4 = new Image (139,30); a4.src = "./img/menu/podminky.gif";
  a4_2 = new Image (139,30); a4_2.src = "./img/menu/podminky2.gif";

  a5 = new Image (139,30); a5.src = "./img/menu/prospekt.gif";
  a5_2 = new Image (139,30); a5_2.src = "./img/menu/prospekt2.gif";

  a6 = new Image (139,30); a6.src = "./img/menu/cen.gif";
  a6_2 = new Image (139,30); a6_2.src = "./img/menu/cen2.gif";

  a7 = new Image (139,30); a7.src = "./img/menu/kontakt.gif";
  a7_2 = new Image (139,30); a7_2.src = "./img/menu/kontakt2.gif";

  a8 = new Image (139,30); a8.src = "./img/menu/objednavka.gif";
  a8_2 = new Image (139,30); a8_2.src = "./img/menu/objednavka2.gif";
}

function navMouseOver(imgid, imgnew) {
  if (navigator.appVersion.substring(0,1) >= 3)
  {
    document.images[imgid].src = eval(imgnew + ".src");
  }
}