public static void loadImages() {
        button = openImage("button.png");
        favicon = openImage("favicon.png");
        background = openImage("background.jpg");
        field = openImage("field.png");
        black_field = openImage("black_field.png");
        white_field = openImage("white_field.png");
        border = openImage("border.png");
        dragbutton = openImage("dragbutton.png");
        loadQuestionImages();
    }