        * @param boxObj       Collapseable box
        * @param buttonObj Button controlling box
        */
        function closeBox(boxObj, buttonObj) {
            if (boxObj == null || buttonObj == null) {
                // Box or button not found
            } else {
                // Change 'display' CSS property of box
                boxObj.style.display = "none";
                
                // Change text of button
                if (boxObj.style.display == "none") {
                    but