if (jcboTour.getItemAt(jcboTour.getSelectedIndex())==null)return;
if (jcboTour.getItemAt(jcboTour.getSelectedIndex())!="<Nenhum>"){
tourSelecionado=(Tour)jcboTour.getItemAt(jcboTour.getSelectedIndex());
jcboPerna.setEnabled(true);
jcboPerna.removeAllItems();
Tour t=(Tour)jcboTour.getItemAt(jcboTour.getSelectedIndex());
for (PernaTour pt:t.getPernas()){
jcboPerna.addItem(pt);
}
}else{
jcboPerna.setEnabled(false);
}