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/en/top_menu_03_on.jpg";
  
  use_on = new Image;
  use_on.src = "/img/en/top_menu_04_on.jpg";
  
  pri_on = new Image;
  pri_on.src = "/img/en/top_menu_05_on.jpg";
  
  spe_on = new Image;
  spe_on.src = "/img/en/top_menu_06_on.jpg";
  
  par_on = new Image;
  par_on.src = "/img/en/top_menu_07_on.jpg";
  
  ser_on = new Image;
  ser_on.src = "/img/en/top_menu_08_on.jpg";
  
  col_on = new Image;
  col_on.src = "/img/en/top_menu_09_on.jpg";
  
  con_on = new Image;
  con_on.src = "/img/en/top_menu_10_on.jpg";

  art_on = new Image;
  art_on.src = "/img/en/menu_01_on.gif";
  
  req_on = new Image;
  req_on.src = "/img/en/menu_02_on.gif";
  
  eve_on = new Image;
  eve_on.src = "/img/en/menu_03_on.gif";
  
  tea_on = new Image;
  tea_on.src = "/img/en/menu_04_on.gif";
  
  emp_on = new Image;
  emp_on.src = "/img/en/menu_05_on.gif";

  
  new_off = new Image;
  new_off.src = "/img/en/top_menu_03_off.jpg";
  
  use_off = new Image;
  use_off.src = "/img/en/top_menu_04_off.jpg";
  
  pri_off = new Image;
  pri_off.src = "/img/en/top_menu_05_off.jpg";
  
  spe_off = new Image;
  spe_off.src = "/img/en/top_menu_06_off.jpg";
  
  par_off = new Image;
  par_off.src = "/img/en/top_menu_07_off.jpg";
  
  ser_off = new Image;
  ser_off.src = "/img/en/top_menu_08_off.jpg";
  
  col_off = new Image;
  col_off.src = "/img/en/top_menu_09_off.jpg";
  
  con_off = new Image;
  con_off.src = "/img/en/top_menu_10_off.jpg";
  
  art_off = new Image;
  art_off.src = "/img/en/menu_01_off.gif";
  
  req_off = new Image;
  req_off.src = "/img/en/menu_02_off.gif";
  
  eve_off = new Image;
  eve_off.src = "/img/en/menu_03_off.gif";
  
  tea_off = new Image;
  tea_off.src = "/img/en/menu_04_off.gif";
  
  emp_off = new Image;
  emp_off.src = "/img/en/menu_05_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;
  }
}