_mainpanel.getCurrentTreePanel().resetPreferredSize();
_mainpanel.adjustJScrollPane();
_mainpanel.getCurrentTreePanel().repaint();
_mainpanel.getCurrentTreePanel().validate();
_mainpanel.validate();
_mainpanel.getCurrentTreePanel().calcParametersForPainting( _mainpanel.getSizeOfViewport().width,
_mainpanel.getCurrentTreePanel().resetPreferredSize();
_mainpanel.adjustJScrollPane();
_mainpanel.getCurrentTreePanel().repaint();
_mainpanel.getCurrentTreePanel().validate();
_mainpanel.validate();
_mainpanel.getCurrentTreePanel().calcParametersForPainting( _mainpanel.getSizeOfViewport().width,