function toggleCode( id ) {
  if ( document.getElementById )
    elem = document.getElementById( id );
  else if ( document.all )
    elem = eval( "document.all." + id );
  else
    return false;

  elemStyle = elem.style;
  
  if ( elemStyle.display != "block" ) {
    elemStyle.display = "block"
  } else {
    elemStyle.display = "none"
  }

  return true;
}