private void mUploadActionPerformed(java.awt.event.ActionEvent evt) {
      if (Data.filesUpload == 0) {
        JOptionPane.showMessageDialog(rootPane, Data.text("upload-selectfiles"), Data.text("uploading"), JOptionPane.ERROR_MESSAGE);
      } else {
        if (Data.wiki == null) {
          if (Data.fLogin == null) {
            Data.fLogin = new FLogin(data, true);
          } else {
            Data.fLogin.setVisible(true);
          }
        } else {
          if (Data.fUploadCheck == null) {
            Data.fUploadCheck = new FUploadCheck(data);
          } else {
            Data.fUploadCheck.setVisible(true);
          }
        }
      }
    }