if (document.images) {
  menu_home_on = new Image();
  menu_home_off = new Image();
  menu_home_on.src = "/img/menu/home_on.gif";
  menu_home_off.src = "/img/menu/home_off.gif";

  menu_about_on = new Image();
  menu_about_off = new Image();
  menu_about_on.src = "/img/menu/about_on.gif";
  menu_about_off.src = "/img/menu/about_off.gif";

  menu_events_on = new Image();
  menu_events_off = new Image();
  menu_events_on.src = "/img/menu/events_on.gif";
  menu_events_off.src = "/img/menu/events_off.gif";

  menu_contact_on = new Image();
  menu_contact_off = new Image();
  menu_contact_on.src = "/img/menu/contact_on.gif";
  menu_contact_off.src = "/img/menu/contact_off.gif";
  
  menu_one_on = new Image();
  menu_one_off = new Image();
  menu_one_on.src = "/img/menu/one_on.gif";
  menu_one_off.src = "/img/menu/one_off.gif";

  menu_two_on = new Image();
  menu_two_off = new Image();
  menu_two_on.src = "/img/menu/two_on.gif";
  menu_two_off.src = "/img/menu/two_off.gif";

  menu_three_on = new Image();
  menu_three_off = new Image();
  menu_three_on.src = "/img/menu/three_on.gif";
  menu_three_off.src = "/img/menu/three_off.gif";

  menu_four_on = new Image();
  menu_four_off = new Image();
  menu_four_on.src = "/img/menu/four_on.gif";
  menu_four_off.src = "/img/menu/four_off.gif";

  menu_five_on = new Image();
  menu_five_off = new Image();
  menu_five_on.src = "/img/menu/five_on.gif";
  menu_five_off.src = "/img/menu/five_off.gif";

  menu_six_on = new Image();
  menu_six_off = new Image();
  menu_six_on.src = "/img/menu/six_on.gif";
  menu_six_off.src = "/img/menu/six_off.gif";

  menu_seven_on = new Image();
  menu_seven_off = new Image();
  menu_seven_on.src = "/img/menu/seven_on.gif";
  menu_seven_off.src = "/img/menu/seven_off.gif";


}

function imgOn(imgName) {
  if (document.images) {
    document[imgName].src = eval(imgName + "_on.src");
  }
}

function imgOff(imgName) {
  if (document.images) {
    document[imgName].src = eval(imgName + "_off.src");
  }
}