if (document.images)
{
// on images
  image1on = new Image();
  image1on.src = "images/aboutOFF.gif";
  
  image2on = new Image();
  image2on.src = "images/membersOFF.gif";

  image3on = new Image();
  image3on.src = "images/mapOFF.gif";

  image4on = new Image();
  image4on.src = "images/calendarOFF.gif";

  image5on = new Image();
  image5on.src = "images/fastestOFF.gif";

  image6on = new Image();
  image6on.src = "images/mediaOFF.gif";

  image7on = new Image();
  image7on.src = "images/techOFF.gif";

  image8on = new Image();
  image8on.src = "images/boardOFF.gif";

  image9on = new Image();
  image9on.src = "images/joinOFF.gif";

  image10on = new Image();
  image10on.src = "images/linksOFF.gif";

  image11on = new Image();
  image11on.src = "images/contactOFF.gif";

  image12on = new Image();
  image12on.src = "images/linkspacerOFF.gif";

// off images

  image1off = new Image();
  image1off.src = "images/aboutON.gif";

  image2off = new Image();
  image2off.src = "images/membersON.gif";

  image3off = new Image();
  image3off.src = "images/mapON.gif";

  image4off = new Image();
  image4off.src = "images/calendarON.gif";

  image5off = new Image();
  image5off.src = "images/fastestON.gif";
  
  image6off = new Image();
  image6off.src = "images/mediaON.gif";

  image7off = new Image();
  image7off.src = "images/techON.gif";

  image8off = new Image();
  image8off.src = "images/boardON.gif";

  image9off = new Image();
  image9off.src = "images/joinON.gif";

  image10off = new Image();
  image10off.src = "images/linksON.gif";

  image11off = new Image();
  image11off.src = "images/contactON.gif";

  image12off = new Image();
  image12off.src = "images/linkspacerON.gif";
}

function turnOn(imageName)
{
  if (document.images)
  {
    document[imageName].src = eval(imageName + "on.src");
  }
}

function turnOff(imageName)
{
  if (document.images)
  {
    document[imageName].src = eval(imageName + "off.src");
  }
}

function openWindow(url)
{
  var options = "width=400" + ",height=225";
  options += "resizable=yes, scrollbars=no, status=no, menubar=no, toolbar=no, location=no, directories=no";
  var calendar = window.open(url, 'calendar', options);
}