private void jLabel2MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jLabel2MouseClicked
        if(this.jFrame1.isVisible())
            this.jFrame1.setVisible(false);
        else
            this.jFrame1.setVisible(true);
            this.jFrame1.setLocation(450,230);
            this.jSlider1.addChangeListener(new MyChangeAction());
    }//GEN-LAST:event_jLabel2MouseClicked