Bug-59-preivous-and-next-word

@john-hu This is about bug-59. Please Help me review this one. Thank you~
You just copy from others, right.

I think we should use the following version:
```
  private void showAlertDialog(String title, String msg,
          final boolean closeSelf) {
    Builder dialog = new AlertDialog.Builder(this);
    dialog.setTitle(title);
    dialog.setMessage(msg);
    dialog.setPositiveButton(android.R.string.ok,
            new DialogInterface.OnClickListener() {

              @Override
              public void onClick(DialogInterface dialog, int which) {
                if (closeSelf && AlertDialog.BUTTON_POSITIVE == which) {
                  CardActivity.this.finish();
                }
              }
            });
    dialog.show();
  }
```