function checkform ( form )

{
  var r=0;
  var message = "Please provide the following information before submitting your registration:\n";



  if (form.name.value=='') {
        message += "\n- Your name";
 r++;
  }


  if ((form.emailaddress.value=='') && (form.contactnumber.value=='')) {
 message += "\n- Either a email address or contact number we can contact you on";
 r++;
  }

  

  // ** END **
  if (r > 0) {
 alert(message);
   return false;
  }
  else {
 return true;
  }
}