ight side of the window from 
          *           the left side of the element.
          * @param y_displacement The difference in pixels to the right side of the window from 
          *           the top of the element.          
          */
         function selectTOCGroupBy(id, isChunked, indexFileLocation, indexFileNamespace, indexFileComponent){

            if (!isChunked) {
             var selectIds = new Array('toc_group_by_namespace', 'toc_group_by_location', 'toc_group_by_component_type');
 