private void jb_createActionPerformed(java.awt.event.ActionEvent evt)//GEN-FIRST:event_jb_createActionPerformed
    {//GEN-HEADEREND:event_jb_createActionPerformed
        int br_err = chack_form();
        if (br_err != 0)
        {
            jl_error_msg.setText("Greska " + br_err);
        } else
        {
            jl_error_msg.setText("");
            ok = true;
            setVisible(false);
        }
    }//GEN-LAST:event_jb_createActionPerformed