function OpenVT()
{location.replace("virtual_tour.html");}
function OpenPF()
{location.replace("google/google_colorado_plateau.html");}
function OpenPI()
{location.replace("photo_index_set.html");}
function Opendl()
{location.replace("downloads_set.html");}
function OpenHOME()
{location.replace("index.html");}

function openBrWindow(theURL,winName,features) { 
  window.open(theURL,winName,features);
  }