browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if ((browserName == "Netscape" && browserVer >= 3)||
  (browserName == "Microsoft Internet Explorer" && browserVer >=4)) version = "n3";
else version = "x";

if (version == "n3"){    
  vnon = new Image;
  vnon.src = "/img/fr/menu_top_01_on.gif";
  voon = new Image;
  voon.src = "/img/fr/menu_top_02_on.gif";
  quon = new Image;
  quon.src = "/img/fr/menu_top_03_on.gif";
  pron = new Image;
  pron.src = "/img/fr/menu_top_04_on.gif";
  seon = new Image;
  seon.src = "/img/fr/menu_top_05_on.gif";
  noon = new Image;
  noon.src = "/img/fr/menu_top_06_on.gif";
  coon = new Image;
  coon.src = "/img/fr/menu_top_07_on.gif";
  alon = new Image;
  alon.src = "/img/fr/menu_top_08_on.gif";
  
  vnoff = new Image;
  vnoff.src = "/img/fr/menu_top_01_off.gif";
  vooff = new Image;
  vooff.src = "/img/fr/menu_top_02_off.gif";
  quoff = new Image;
  quoff.src = "/img/fr/menu_top_03_off.gif";
  proff = new Image;
  proff.src = "/img/fr/menu_top_04_off.gif";
  seoff = new Image;
  seoff.src = "/img/fr/menu_top_05_off.gif";
  nooff = new Image;
  nooff.src = "/img/fr/menu_top_06_off.gif";
  cooff = new Image;
  cooff.src = "/img/fr/menu_top_07_off.gif";
  aloff = new Image;
  aloff.src = "/img/fr/menu_top_08_off.gif";
}

function img_act(imgName){
  if (version == "n3"){
    imgOn = eval(imgName + "on.src");
    document [imgName].src = imgOn;
  }
}

function img_inact(imgName){
  if (version == "n3"){
    imgOff = eval(imgName + "off.src");
    document [imgName].src = imgOff;
  }
}