protected void onCreate(Bundle paramBundle) {
        super.onCreate(paramBundle);
        setContentView(R.layout.installguides_menu);
        setTitleFromActivityLabel(R.id.title_text);

        btn_Back = (Button) findViewById(R.id.btn_Back);
        btn_Back.setOnClickListener (btn_Back_onClick);

        btn_Ubuntu10Guide   = (Button) findViewById(R.id.btn_Ubuntu10Guide);
        btn_Ubuntu12Guide   = (Button) findViewById(R.id.btn_Ubuntu12Guide);
        btn_BacktrackGuide  = (Button) findViewById(R.id.btn_BacktrackGuide);
        btn_DebianGuide     = (Button) findViewById(R.id.btn_DebianGuide);

        btn_Ubuntu10Guide   .setOnClickListener (btn_Ubuntu10Guide_onClick);
        btn_Ubuntu12Guide   .setOnClickListener (btn_Ubuntu12Guide_onClick);
        btn_BacktrackGuide  .setOnClickListener (btn_BacktrackGuide_onClick);
        btn_DebianGuide     .setOnClickListener (btn_DebianGuide_onClick);

        LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE); PopupWindow pw = new PopupWindow( inflater.inflate(R.layout.donation_popup, null, false), 100, 100, true);

        pw.showAtLocation(this.findViewById(R.layout.installguides_menu), Gravity.CENTER, 0, 0);
    }