//center dialog
Dimension scrSize=Toolkit.getDefaultToolkit().getScreenSize();
Rectangle dlgSize=this.getBounds();
this.setLocation((scrSize.width-dlgSize.width)/2,(scrSize.height-dlgSize.height)/2);
panelFarm = new PanelVidalFarmEdit(this, true);
tabs.add(panelFarm.getPageTitle(), panelFarm);
panelATC = new PanelVidalAtcEdit(this, true);
tabs.add(panelATC.getPageTitle(), panelATC);