if (document.images) {
  menu_watersports_off = new Image();
  menu_watersports_off.src = "images/menu_bar_inaktiv_149px.gif";
  menu_watersports_on = new Image();
  menu_watersports_on.src = "images/menu_bar_aktiv_lighter_149px.gif";

  menu_landsports_off = new Image();
  menu_landsports_off.src = "images/menu_bar_inaktiv_149px.gif";
  menu_landsports_on = new Image();
  menu_landsports_on.src = "images/menu_bar_aktiv_lighter_149px.gif";

  menu_used_corner_off = new Image();
  menu_used_corner_off.src = "images/menu_bar_inaktiv_149px.gif";
  menu_used_corner_on = new Image();
  menu_used_corner_on.src = "images/menu_bar_aktiv_lighter_149px.gif";

  menu_nice_price_off = new Image();
  menu_nice_price_off.src = "images/menu_bar_inaktiv_149px.gif";
  menu_nice_price_on = new Image();
  menu_nice_price_on.src = "images/menu_bar_aktiv_lighter_149px.gif";

  menu_kiteschool_off = new Image();
  menu_kiteschool_off.src = "images/menu_bar_inaktiv_149px.gif";
  menu_kiteschool_on = new Image();
  menu_kiteschool_on.src = "images/menu_bar_aktiv_lighter_149px.gif";

  menu_kontakt_off = new Image();
  menu_kontakt_off.src = "images/menu_bar_inaktiv_149px.gif";
  menu_kontakt_on = new Image();
  menu_kontakt_on.src = "images/menu_bar_aktiv_lighter_149px.gif";

}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}