function edp_trim(word) {
	return word.replace(/^\s*/, '').replace(/\s*$/, '');
}

function edp_valid_email(email) {
  res = email.match('[A-Za-z0-9_&+.-]+@([A-Za-z0-9_-]+\.)+[A-Za-z]{2,4}');
  if (res == null)
	return false;
  else
	return (res[0] == email);
}