Glad it works for you.
Just as an aside, I notice that this sidebox file has some obsolete code in it that has not been useful for several years:
Code:
    $title =  BOX_HEADING_SCROLL_BOX;
    $left_corner = false;
    $right_corner = false;
    $right_arrow = false;
    $title_link = false;
The lines in red can be deleted to streamline the file. The others need to stay.