<!--
browserName = navigator.appName;
browserVer = parseInt ( navigator.appVersion );
version = "n2";
if ( browserName == "Netscape" && browserVer >= 3 ) version = "n3";
if ( browserName == "Microsoft Internet Explorer" && browserVer >=4 ) version = "e4";
if ( version == "n3" || version == "e4" )
{
  home_on = new Image (134, 60);
  home_on.src = "images/home_on.jpg";
  search_on = new Image (134, 60);
  search_on.src = "images/search_on.jpg";
  gallery_on = new Image (134, 60);
  gallery_on.src = "images/gallery_on.jpg";
  contact_on = new Image (134, 60);
  contact_on.src = "images/contact_on.jpg";
  home_off = new Image (134, 60);
  home_off.src = "images/home_off.jpg";
  search_off = new Image (134, 60);
  search_off.src = "images/search_off.jpg";
  gallery_off = new Image (134, 60);
  gallery_off.src = "images/gallery_off.jpg";
  contact_off = new Image (134, 60);
  contact_off.src = "images/contact_off.jpg";
}
function button_on ( imgName )
{
  if ( version == "n3" || version == "e4" )
  {
    butOn = eval ( imgName + "_on.src" );
    document [imgName].src = butOn;
  }
}
function button_off ( imgName )
{
  if ( version == "n3" || version == "e4" )
  {
    butOff = eval ( imgName + "_off.src" );
    document [imgName].src = butOff;
  }
}
// -->