void QgsSymbolSelectorWidget::moveLayerUp()
{
  moveLayerByOffset( -1 );
}
void QgsSymbolV2PropertiesDialog::moveLayerUp()
{
  moveLayerByOffset( -1 );
}
void QgsSymbolSelectorWidget::moveLayerDown()
{
  moveLayerByOffset( + 1 );
}
void QgsSymbolV2PropertiesDialog::moveLayerDown()
{
  moveLayerByOffset( + 1 );
}