okay = false;
var preload = new Array (

  "images/menu1h.gif",   "images/menu1.gif",
  "images/menu2h.gif",   "images/menu2.gif",
  "images/menu3h.gif",   "images/menu3.gif",
  "images/menu4h.gif",   "images/menu4.gif",
  "images/menu5h.gif",   "images/menu5.gif",
  "images/menu11h.gif",   "images/menu11.gif",
  "images/menu12h.gif",   "images/menu12.gif",
  "images/menu13h.gif",   "images/menu13.gif",
  "images/menu14h.gif",   "images/menu14.gif",
  "images/menu15h.gif",   "images/menu15.gif",
  "images/menu16h.gif",   "images/menu16.gif",
  "images/menu17h.gif",   "images/menu17.gif"
  
  );



with(navigator) {
  code = appCodeName;
  app = appName;
  version = appVersion;
  iver = parseInt(version);
  ua = userAgent;
  }

if ( code == "Mozilla" && iver >= 3 )  okay = true;
else { okay = false; }

if(okay) {
  var re = new RegExp();
  re.compile("[\\/.:\\-\\s]", "g");

  for (var i = 0; i < preload.length; i++) {
    i_preload(preload[i]);
    }
  var preloaded = true
  }

function iname (img)
{
var s = img.replace(re, "_");
return s;
}

function i_preload(img)
{
if(img) {
  var imgn = iname(img);
  eval(imgn + " = new Image()");
  eval(imgn + ".src = '" + img + "'");
  }
return true;
}

function swap (name, image)
{
if(!okay) return true;

if(preloaded) document.images[name].src = image;
return true;
}