// define  button images

if(document.images) {

  image01 = new Image(139,32);
  image02 = new Image(139,32);
  image11 = new Image(139,36);
  image12 = new Image(139,36);
  image21 = new Image(139,35);
  image22 = new Image(139,35);
  image31 = new Image(139,35);
  image32 = new Image(139,35);
  image41 = new Image(139,35);
  image42 = new Image(139,35);  

// source button images

  image01.src = "images/tnav_about.gif";
  image02.src = "images/tnav_about_on.gif";
  image11.src = "images/tnav_meditation.gif";
  image12.src = "images/tnav_meditation_on.gif";
  image21.src = "images/tnav_facilities.gif";
  image22.src = "images/tnav_facilities_on.gif";
  image31.src = "images/tnav_recreation.gif";
  image32.src = "images/tnav_recreation_on.gif";
  image41.src = "images/tnav_services.gif";
  image42.src = "images/tnav_services_on.gif";  

}

// MouseOver Function

function swapImg(imgLocation,imgName){
  if(navigator.appName.indexOf("Netscape") != -1){
    tmpImg = FindImage(imgLocation,document);
  } else {
    tmpImg = document.images[imgLocation];
  }
  if(tmpImg != "" && tmpImg != null){
    tmpImg.src = eval(imgName + ".src");
  }
}

function FindImage(name, doc){
  var i, img;
  for (i = 0; i < doc.images.length; i++){
    if (doc.images[i].name == name){ return doc.images[i]; }
  }
  for (i = 0; i < doc.layers.length; i++){
    if ((img = FindImage(name, doc.layers[i].document)) != null) {
      img.container = doc.layers[i];
      return img;
    }
  }
  return null;
}