function check() {
 if (document.qa_form.name.value=="") {
  alert("Fill in 'FULL NAME' field!");
  document.qa_form.name.focus();
  return false;
 };
 if (document.qa_form.email.value=="") {
  alert("Fill in 'E-MAIL' field!");
  document.qa_form.email.focus();
  return false;
 };
 if (document.qa_form.question.value=="") {
  alert("Fill in 'QUESTION' field!");
  document.qa_form.question.focus();
  return false;
 };
}