function checkvalue(form) {
    var printerror="The following item(s) must be filled in";
  if(form.Name.value == "") printerror = printerror + "\nName";
  if(form.Phone.value == "") printerror = printerror + "\nPhone";
  if(form.senderemail.value == "") printerror = printerror + "\nE-Mail";
     if((form.Name.value != "") && (form.Phone.value != "") && (form.senderemail.value != ""))
    form.submit();
   else  alert(printerror);
  } //END FUNCTION