<!--
// 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(72,24)
  home_off.src = "graphics/buttons/btn_home_off.gif"
  var home_over = new Image(72,24)
  home_over.src = "graphics/buttons/btn_home_on.gif" 

  var about_off = new Image(91,24)
  about_off.src = "graphics/buttons/btn_about_off.gif"
  var about_over = new Image(91,24)
  about_over.src = "graphics/buttons/btn_about_on.gif"
  
  var contact_off = new Image(77,24)
  contact_off.src = "graphics/buttons/btn_contact_off.gif"
  var contact_over = new Image(77,24)
  contact_over.src = "graphics/buttons/btn_contact_on.gif" 
  
  var description_off = new Image(227,24)
  description_off.src = "graphics/buttons/btn_description_off.gif"
  var description_over = new Image(227,24)
  description_over.src = "graphics/buttons/btn_description_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);
  }   
}

// -->