browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if (browserName == "Netscape" && browserVer >= 3) 
{
  version = "n3";
} 

else 
{
  version = "n2";
}

if (browserName == "Microsoft Internet Explorer" && browserVer >= 4) 
{
  version = "n3";
}

if(version == "n3") 
{
  LakeMap_on = new Image();
  LakeMap_on.src = "MenuMisc/LakeMapOver.gif";
  LakeMap_off = new Image();
  LakeMap_off.src = "MenuMisc/LakeMap.gif";
  
  LakeLevels_on = new Image();
  LakeLevels_on.src = "MenuMisc/LakeLevelsOver.gif";
  LakeLevels_off = new Image();
  LakeLevels_off.src = "MenuMisc/LakeLevels.gif";
  
  Newsletters_on = new Image();
  Newsletters_on.src = "MenuMisc/NewslettersOver.gif";
  Newsletters_off = new Image();
  Newsletters_off.src = "MenuMisc/Newsletters.gif";
  
  Conference_on = new Image();
  Conference_on.src = "MenuMisc/ConferenceOver.gif";
  Conference_off = new Image();
  Conference_off.src = "MenuMisc/Conference.gif";
  
  ContactUs_on = new Image();
  ContactUs_on.src = "MenuMisc/ContactUsOver.gif";
  ContactUs_off = new Image();
  ContactUs_off.src = "MenuMisc/ContactUs.gif";
  
  SiteMap_on = new Image();
  SiteMap_on.src = "MenuMisc/SiteMapOver.gif";
  SiteMap_off = new Image();
  SiteMap_off.src = "MenuMisc/SiteMap.gif";
  
  Home_on = new Image();
  Home_on.src = "MenuMisc/HomeOver.gif";
  Home_off = new Image();
  Home_off.src = "MenuMisc/Home.gif";
  
  }

function highlight(imgName) 
{
  if(version=="n3") 
    {
      imgOn = eval (imgName + "_on.src");
      document [imgName].src = imgOn;
    }
}

function unhighlight(imgName) 
{
  if(version=="n3") 
    {
      imgOff = eval (imgName + "_off.src");
      document [imgName].src = imgOff;
    }
}