function getDirections(tf){
  var h = "http://maps.google.ca/maps?f=d&source=s_d&saddr="
  var startString;

  startString = tf.address.value.replace(/\s/g,'+');
  if (startString.length > 0) startString += ",";
  if (tf.city.value.length > 0) startString += tf.city.value.replace(/\s/g,'+') + ",";
  startString += tf.state.options[tf.state.selectedIndex].value.replace(/\s/g,'+');
  h = h + startString + "&daddr=108+West+Watauga+Avenue,+Johnson+City,+TN,+United+States";
  location.href = h;
  return(false);
}