<!--
// flag if Netscape 4
var appVer = navigator.appVersion;
var netscape4 = (navigator.appName == "Netscape" && appVer.charAt(0) == "4") ? true : false;

if (document.images)
{
  // pre-cache rollover images
  
  var home_off = new Image(182,25)
  home_off.src = "graphics/buttons/btn_home_off.gif"
  var home_over = new Image(182,25)
  home_over.src = "graphics/buttons/btn_home_on.gif"
  
  var what_off = new Image(182,20)
  what_off.src = "graphics/buttons/btn_what_off.gif"
  var what_over = new Image(182,20)
  what_over.src = "graphics/buttons/btn_what_on.gif" 
  
  var sessions_off = new Image(182,20)
  sessions_off.src = "graphics/buttons/btn_sessions_off.gif"
  var sessions_over = new Image(182,20)
  sessions_over.src = "graphics/buttons/btn_sessions_on.gif"
  
  var mat_off = new Image(182,20)
  mat_off.src = "graphics/buttons/btn_mat_off.gif"
  var mat_over = new Image(182,20)
  mat_over.src = "graphics/buttons/btn_mat_on.gif"
  
  var reformer_off = new Image(182,20)
  reformer_off.src = "graphics/buttons/btn_reformer_off.gif"
  var reformer_over = new Image(182,20)
  reformer_over.src = "graphics/buttons/btn_reformer_on.gif"
  
  var pricing_off = new Image(182,20)
  pricing_off.src = "graphics/buttons/btn_pricing_off.gif"
  var pricing_over = new Image(182,20)
  pricing_over.src = "graphics/buttons/btn_pricing_on.gif"
  
  var photos_off = new Image(182,20)
  photos_off.src = "graphics/buttons/btn_photos_off.gif"
  var photos_over = new Image(182,20)
  photos_over.src = "graphics/buttons/btn_photos_on.gif"
  
  var instructors_off = new Image(182,20)
  instructors_off.src = "graphics/buttons/btn_instructors_off.gif"
  var instructors_over = new Image(182,20)
  instructors_over.src = "graphics/buttons/btn_instructors_on.gif"
    
  var testimonials_off = new Image(182,20)
  testimonials_off.src = "graphics/buttons/btn_testimonials_off.gif"
  var testimonials_over = new Image(182,20)
  testimonials_over.src = "graphics/buttons/btn_testimonials_on.gif"
  
  var register_off = new Image(182,20)
  register_off.src = "graphics/buttons/btn_register_off.gif"
  var register_over = new Image(182,20)
  register_over.src = "graphics/buttons/btn_register_on.gif"
  
  var contact_off = new Image(182,20)
  contact_off.src = "graphics/buttons/btn_contact_off.gif"
  var contact_over = new Image(182,20)
  contact_over.src = "graphics/buttons/btn_contact_on.gif"
  
  var directions_off = new Image(182,20)
  directions_off.src = "graphics/buttons/btn_directions_off.gif"
  var directions_over = new Image(182,20)
  directions_over.src = "graphics/buttons/btn_directions_on.gif"


 
}

// swap images
function di(id,name)
{
  if (document.images)
    document.images[id].src=eval(name+".src");
}

var popWin = null;
var popHeight = 450;
var openString;

var availHeight;
availHeight = Math.round(screen.availHeight * 0.75);
if (availHeight > popHeight)
  popHeight = availHeight;


openString = "scrollbars=yes,resizable=yes,toolbar=no,menubar=yes,location=no,width=800,height=" + popHeight.toString() + ",top=40,";

function popup(url)
{
  if (popWin != null && !popWin.closed)
  {
    popWin.location = url;
  }
  else
  {
    if (netscape4)
      popWin = window.open(url, "NewWin", "scrollbars=yes,resizable=yes,toolbar=no,menubar=yes,location=no,width=800,height=450,top=40");
    else
      popWin = window.open(url, "NewWin", openString);
  }   
}

// -->