function mjf_validateform(form)
{
  var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
  var errorMessage = '';
  var errorcount = 0;

  var name = form.mjf_name.value;
  var email = form.mjf_email.value;
  if(name == "")
  {
    errorMessage = errorMessage + "Please input your name.";
    errorcount++;
  }

  if(email == "" || email.search(emailRegEx) == -1)
  {
    if(errorcount)
        errorMessage = errorMessage + "<br>";
    errorMessage = errorMessage + "Please input a valid email address.";
    errorcount++;
  }

  if(errorcount > 0)
  {
    form.childNodes[1].innerHTML = '<span class="mjf_errormsg">' + errorMessage + '</span>';
    return false;
  }

  return true;
}

function mjf_closepopup()
{
  popup = document.getElementById("mjf_popup");
  popup.style.visibility = "hidden";
}