// ---------------------------------------------------------------------------------------
function common_keypress_enter(which) 
{
  e = window.event;
										/* user has hit enter key? */
  if (e && e.keyCode == 13)
  {
										/* submit the given button */
    _submit(which);
	return false;
  }
										/* user hit any other key? */
  else
										/* this key has not been eaten */
    return true;
}