function validate_enq(frm) {
  var isError = false;
  var emailaddress = frm.email_address.value;
  var comment = frm.new_comment.value;
  var firstname = frm.byline.value;
if (firstname == "") {
  alert("Please enter your NAME");
  isError = true;
}
if (emailaddress == "" || emailaddress.indexOf("@") == -1) {
  alert("Please enter your EMAIL ADDRESS");
  isError = true;
}
if (comment == "") {
  alert("You forgot to enter your COMMENT");
  isError = true;
}
return !isError;
}