private void btnEntrarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnEntrarActionPerformed
        // TODO add your handling code here:
        //SetContentPanel(new teste).setVisible(true).pack();
        
        Menu_Opcoes ms = new Menu_Opcoes();        
        ms.setVisible(true);
        ms.setSize(400, 570);  // tamanho do JFRAME
        ms.setLocation(300, 50);
        this.dispose();
    }//GEN-LAST:event_btnEntrarActionPerformed