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"){
  /* ------------- ON ------------- */
  /* -- TOP MENU -- */
  credit_on = new Image;
  credit_on.src = "/img/en/menu_top_02_on.gif";
  
  testimonials_on = new Image;
  testimonials_on.src = "/img/en/menu_top_03_on.gif";
  
  usedcars_on = new Image;
  usedcars_on.src = "/img/en/menu_top_04_on.gif";
  
  newcars_on = new Image;
  newcars_on.src = "/img/en/menu_top_05_on.gif";
  
  contact_on = new Image;
  contact_on.src = "/img/en/menu_top_06_on.gif";
  
  btnlng_on = new Image;
  btnlng_on.src = "/img/en/menu_top_07_on.gif";
  
  /* -- CREDIT -- */
  credit01_on = new Image;
  credit01_on.src = "/img/en/etape_01_on.gif";
  
  credit02_on = new Image;
  credit02_on.src = "/img/en/etape_02_on.gif";
  
  credit03_on = new Image;
  credit03_on.src = "/img/en/etape_03_on.gif";
  
  credit04_on = new Image;
  credit04_on.src = "/img/en/etape_04_on.gif";
  
  
  
  /* ------------- OFF ------------- */
  /* -- TOP MENU -- */
  credit_off = new Image;
  credit_off.src = "/img/en/menu_top_02_off.gif";
  
  testimonials_off = new Image;
  testimonials_off.src = "/img/en/menu_top_03_off.gif";
  
  usedcars_off = new Image;
  usedcars_off.src = "/img/en/menu_top_04_off.gif";
  
  newcars_off = new Image;
  newcars_off.src = "/img/en/menu_top_05_off.gif";
  
  contact_off = new Image;
  contact_off.src = "/img/en/menu_top_06_off.gif";
  
  btnlng_off = new Image;
  btnlng_off.src = "/img/en/menu_top_07_off.gif";
  
  /* -- CREDIT -- */
  credit01_off = new Image;
  credit01_off.src = "/img/en/etape_01_off.gif";
  
  credit02_off = new Image;
  credit02_off.src = "/img/en/etape_02_off.gif";
  
  credit03_off = new Image;
  credit03_off.src = "/img/en/etape_03_off.gif";
  
  credit04_off = new Image;
  credit04_off.src = "/img/en/etape_04_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;
  }
}