function check() {
 if (document.feedback.fname.value=="") {
  document.feedback.fname.focus();
  alert("Fill in FIRST NAME, please!");
  return false;
 }
 if (document.feedback.lname.value=="") {
  document.feedback.lname.focus();
  alert("Fill in LAST NAME, please!");
  return false;
 }
 if (document.feedback.email.value=="") {
  document.feedback.email.focus();
  alert("Fill in E-MAIL, please!");
  return false;
 }
 if (document.feedback.msg.value=="") {
  document.feedback.msg.focus();
  alert("Fill in COMMENTS, please!");
  return false;
 }
 document.feedback.save.value="Sending...";
 document.feedback.save.disabled=true;
}