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"){    
  new_on = new Image;
  new_on.src = "/img/fr/menu_top_03_on.gif";
  
  use_on = new Image;
  use_on.src = "/img/fr/menu_top_04_on.gif";
  
  ser_on = new Image;
  ser_on.src = "/img/fr/menu_top_05_on.gif";
  
  parts_on = new Image;
  parts_on.src = "/img/fr/menu_top_05b_on.gif";
  
  con_on = new Image;
  con_on.src = "/img/fr/menu_top_06_on.gif";
  

  new_off = new Image;
  new_off.src = "/img/fr/menu_top_03_off.gif";
  
  use_off = new Image;
  use_off.src = "/img/fr/menu_top_04_off.gif";
  
  ser_off = new Image;
  ser_off.src = "/img/fr/menu_top_05_off.gif";

  parts_off = new Image;
  parts_off.src = "/img/fr/menu_top_05b_off.gif";
  
  con_off = new Image;
  con_off.src = "/img/fr/menu_top_06_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;
  }
}