function disableEnterKey(e,p,d) {
  if(window.event) key = window.event.keyCode; 
  else key = e.which; 
  if(key == 13) {
    SubmitPage(p); 
    SelectAllDisplay(d); 
    SubmitForm('Search');
    return false; 
  } 
  else return true;
}

function enableEnterKeySerial(e,d) {
  if(window.event) key = window.event.keyCode; 
  else key = e.which; 
  if(key == 13) {
    SubmitPage(null); 
    document.MainForm.action = d;
    SubmitForm('Serial');
    return false; 
  } 
  else return true;
}