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"){    
  used_on = new Image;
  used_on.src = "/img/fr/top_menu_02_on.gif";
  
  demande_on = new Image;
  demande_on.src = "/img/fr/top_menu_03_on.gif";
  
  service_on = new Image;
  service_on.src = "/img/fr/top_menu_04_on.gif";
  
  credit_on = new Image;
  credit_on.src = "/img/fr/top_menu_05_on.gif";
  
  contact_on = new Image;
  contact_on.src = "/img/fr/top_menu_06_on.gif";
  

  used_off = new Image;
  used_off.src = "/img/fr/top_menu_02_off.gif";
  
  demande_off = new Image;
  demande_off.src = "/img/fr/top_menu_03_off.gif";
  
  service_off = new Image;
  service_off.src = "/img/fr/top_menu_04_off.gif";
  
  credit_off = new Image;
  credit_off.src = "/img/fr/top_menu_05_off.gif";
  
  contact_off = new Image;
  contact_off.src = "/img/fr/top_menu_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;
  }
}