function checkform ( form )
{

  // ** START **
  if (form.email.value == "") {
    alert( "Please Enter Your E-mail Address." );
    form.email.focus();
    return false ;
  }
  if (form.message.value == "") {
    alert( "Please Enter Your Message." );
    form.message.focus();
    return false ;
  }
  // ** END **
  return true ;
}