function notvalid(str) {
  value = document.getElementById(str).value;
  notvalidresult = ((value == null) || (value == "") || (value.charAt(0) == ' '));
  if (notvalidresult) document.getElementById(str).focus();
  return notvalidresult;
}

function saveForm(track) {
  if (notvalid("Name")) {
    alert('Please provide your Name');
  } else if (notvalid("Comment")) {
    alert('Please provide a Comment');
  } else if (notvalid("Email")) {
    alert('Please provide a valid Email Address');
  } else if (notvalid("Phone")) {
    alert('Please provide a valid Phone Number');
  } else {
    if (track) pageTracker._trackPageview("/form.save.do");
    corePostLoop('result', 'form.save.rpc?banner=http://www.paypalvendor.com/core/images/websitefeedback.jpg', document.getElementById('contactform'), false, 'result', 'refreshPage');
  }
}

function refreshPage() {
  document.getElementById('formarea').innerHTML = ""; 
}