function validateForm(form)
  {
    var returnValue = true;
    var errorMessage = 'You must enter an \n\n';
    var focusField = null;
    if(!form.emailAddress.value)
    {
      errorMessage += ' - Email Address\n';
      if(!focusField)
        focusField = form.emailAddress;
      returnValue = false;
    }
    if(!returnValue)
    {
      alert(errorMessage);
      if(focusField)
        focusField.focus();
    }
    return returnValue;
  }