function submitEnter( field, e )
{
  var keycode;
  if (window.event) keycode = window.event.keyCode;
  else if (e) keycode = e.which;
  else return true;

  if( keycode == 13 )
  {
     field.form.submit();
     return false;
  }
  else return true;
}

function showLogin()
{
  if( $( 'logindiv' ).style.display == 'none' ) {new Effect.Opacity($( 'logindiv' ), { from:0.3, to: 1.0, duration: 0.2 }); $( 'logindiv' ).show(); }
}