public void loadFilter(string selectedFilter, string staticFilter = "")
        {
            ArrayObject MatEdScheduleArray = "MatEdScheduleArray";
            ArrayObject MatEdPreviewArray = "MatEdPreviewArray";

            GuiDynamicCtrlArrayControl materialSelection = this.FOT("materialSelection");
            GuiStackControl materialPreviewPagesStack = this.FOT("materialPreviewPagesStack");
            GuiPopUpMenuCtrlEx materialPreviewCountPopup = this.FOT("materialPreviewCountPopup");

            // manage schedule array properly
            if (!MatEdScheduleArray.isObject())
                MatEdScheduleArray = new ObjectCreator("ArrayObject", "MatEdScheduleArray").Create();

            // if we select another list... delete all schedules that were created by 
            // previous load
            for (int i = 0; i < MatEdScheduleArray.count(); i++)
                Util.cancel(MatEdScheduleArray.getKey(i).AsInt());

            // we have to empty out the list; so when we create new schedules, these dont linger
            MatEdScheduleArray.empty();

            // manage preview array
            if (!MatEdPreviewArray.isObject())
                MatEdPreviewArray = new ObjectCreator("ArrayObject", "MatEdPreviewArray").Create();

            // we have to empty out the list; so when we create new guicontrols, these dont linger
            MatEdPreviewArray.empty();
            materialSelection.deleteAllObjects();
            materialPreviewPagesStack.deleteAllObjects();

            // changed to accomadate tagging. dig through the array for each tag name,
            // call unique value, sort, and we have a perfect set of materials
            if (staticFilter != "")
                this.currentStaticFilter = staticFilter;

            this.currentFilter = selectedFilter;

            ArrayObject filteredObjectsArray = new ObjectCreator("ArrayObject").Create();

            int previewsPerPage = materialPreviewCountPopup.getTextById(materialPreviewCountPopup.getSelected()).AsInt();

            int tagCount = Util.getWordCount(this.currentFilter);
            if (tagCount != 0)
                {
                for (int j = 0; j < tagCount; j++)
                    {
                    for (int i = 0; i < this.currentStaticFilter.count(); i++)
                        {
                        string currentTag = Util.getWord(this.currentFilter, j);
                        if (this.currentStaticFilter.getKey(i) == currentTag)
                            filteredObjectsArray.add(this.currentStaticFilter.getKey(i), this.currentStaticFilter.getValue(i));
                        }
                    }

                filteredObjectsArray.uniqueValue();
                filteredObjectsArray.sortd();

                this.totalPages = Util.mCeil(filteredObjectsArray.count()/previewsPerPage);

                //Can we maintain the current preview page, or should we go to page 1?
                if ((this.currentPreviewPage*previewsPerPage) >= filteredObjectsArray.count())
                    this.currentPreviewPage = 0;

                // Build out the pages buttons
                this.buildPagesButtons(this.currentPreviewPage, this.totalPages);

                int previewCount = previewsPerPage;
                int possiblePreviewCount = filteredObjectsArray.count() - this.currentPreviewPage*previewsPerPage;
                if (possiblePreviewCount < previewCount)
                    previewCount = possiblePreviewCount;

                int start = this.currentPreviewPage*previewsPerPage;
                for (int i = start; i < start + previewCount; i++)
                    this.buildPreviewArray(filteredObjectsArray.getValue(i));

                filteredObjectsArray.delete();
                }
            else
                {
                this.currentStaticFilter.sortd();

                // Rebuild the static filter list without tagged materials
                ArrayObject noTagArray = new ObjectCreator("ArrayObject").Create();
                for (int i = 0; i < this.currentStaticFilter.count(); i++)
                    {
                    if (this.currentStaticFilter.getKey(i) != "")
                        continue;

                    SimObject material = this.currentStaticFilter.getValue(i);

                    // CustomMaterials are not available for selection
                    if (!material.isObject() || material.isMemberOfClass("CustomMaterial"))
                        continue;

                    noTagArray.add("", material);
                    }

                this.totalPages = Util.mCeil(noTagArray.count()/previewsPerPage);

                //Can we maintain the current preview page, or should we go to page 1?
                if ((this.currentPreviewPage*previewsPerPage) >= noTagArray.count())
                    this.currentPreviewPage = 0;

                // Build out the pages buttons
                this.buildPagesButtons(this.currentPreviewPage, this.totalPages);

                int previewCount = previewsPerPage;
                int possiblePreviewCount = noTagArray.count() - this.currentPreviewPage*previewsPerPage;
                if (possiblePreviewCount < previewCount)
                    previewCount = possiblePreviewCount;

                int start = this.currentPreviewPage*previewsPerPage;
                for (int i = start; i < start + previewCount; i++)
                    this.buildPreviewArray(noTagArray.getValue(i));
                }

            this.loadImages(0);
        }