diff --git a/core/workspace_svg.js b/core/workspace_svg.js
index dad558f93..5d5345c54 100644
--- a/core/workspace_svg.js
+++ b/core/workspace_svg.js
@@ -75,8 +75,8 @@ goog.inherits(Blockly.WorkspaceSvg, Blockly.Workspace);
 Blockly.WorkspaceSvg.prototype.resizeHandlerWrapper_ = null;
 
 /**
- * The render status of an SVG workspace. 
- * Returns `true` for visible workspaces and `false` for non-visible, or headless, workspaces. 
+ * The render status of an SVG workspace.
+ * Returns `true` for visible workspaces and `false` for non-visible, or headless, workspaces.
  * @type {boolean}
  */
 Blockly.WorkspaceSvg.prototype.rendered = true;
@@ -316,7 +316,7 @@ Blockly.WorkspaceSvg.prototype.dispose = function() {
  * @param {?string} prototypeName Name of the language object containing
  *     type-specific functions for this block.
  * @param {string=} opt_id Optional ID.  Use this ID if provided, otherwise
- *     create a new id.
+ *     create a new ID.
  * @return {!Blockly.BlockSvg} The created block.
  */
 Blockly.WorkspaceSvg.prototype.newBlock = function(prototypeName, opt_id) {
diff --git a/demos/blockfactory/app_controller.js b/demos/blockfactory/app_controller.js
index 62a1412b5..225078b81 100644
--- a/demos/blockfactory/app_controller.js
+++ b/demos/blockfactory/app_controller.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
@@ -134,7 +134,7 @@ AppController.prototype.exportBlockLibraryToFile = function() {
   var blockLibText = this.formatBlockLibraryForExport_(blockLib);
   // Get file name.
   var filename = prompt('Enter the file name under which to save your block ' +
-      'library.');
+      'library.', 'library.xml');
   // Download file if all necessary parameters are provided.
   if (filename) {
     FactoryUtils.createAndDownloadFile(blockLibText, filename, 'xml');
diff --git a/demos/blockfactory/block_exporter_controller.js b/demos/blockfactory/block_exporter_controller.js
index 5fc20b753..55da2d4fc 100644
--- a/demos/blockfactory/block_exporter_controller.js
+++ b/demos/blockfactory/block_exporter_controller.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/block_exporter_tools.js b/demos/blockfactory/block_exporter_tools.js
index 1be79a8e2..88e17a2e2 100644
--- a/demos/blockfactory/block_exporter_tools.js
+++ b/demos/blockfactory/block_exporter_tools.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/block_exporter_view.js b/demos/blockfactory/block_exporter_view.js
index 30d4857c3..fbeddaf47 100644
--- a/demos/blockfactory/block_exporter_view.js
+++ b/demos/blockfactory/block_exporter_view.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/block_library_controller.js b/demos/blockfactory/block_library_controller.js
index e5094995f..6754e6f41 100644
--- a/demos/blockfactory/block_library_controller.js
+++ b/demos/blockfactory/block_library_controller.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/block_library_storage.js b/demos/blockfactory/block_library_storage.js
index 25729d823..750717752 100644
--- a/demos/blockfactory/block_library_storage.js
+++ b/demos/blockfactory/block_library_storage.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
@@ -166,5 +166,5 @@ BlockLibraryStorage.prototype.getBlockXmlTextMap = function() {
  * @return {boolean} Whether or not blockType is stored in block library.
  */
 BlockLibraryStorage.prototype.has = function(blockType) {
-  return this.blocks[blockType] ? true : false;
+  return !!this.blocks[blockType];
 };
diff --git a/demos/blockfactory/block_library_view.js b/demos/blockfactory/block_library_view.js
index cb51c6129..444c91c6d 100644
--- a/demos/blockfactory/block_library_view.js
+++ b/demos/blockfactory/block_library_view.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/block_option.js b/demos/blockfactory/block_option.js
index b54e85736..90efe405f 100644
--- a/demos/blockfactory/block_option.js
+++ b/demos/blockfactory/block_option.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/factory.css b/demos/blockfactory/factory.css
index f212b1d49..be2ebc40a 100644
--- a/demos/blockfactory/factory.css
+++ b/demos/blockfactory/factory.css
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/factory.js b/demos/blockfactory/factory.js
index 873c007b2..97f5ff946 100644
--- a/demos/blockfactory/factory.js
+++ b/demos/blockfactory/factory.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/factory_utils.js b/demos/blockfactory/factory_utils.js
index a5954e86a..f961c0bdf 100644
--- a/demos/blockfactory/factory_utils.js
+++ b/demos/blockfactory/factory_utils.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
diff --git a/demos/blockfactory/standard_categories.js b/demos/blockfactory/standard_categories.js
index c3b518457..6b4072680 100644
--- a/demos/blockfactory/standard_categories.js
+++ b/demos/blockfactory/standard_categories.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
diff --git a/demos/blockfactory/workspacefactory/index.html b/demos/blockfactory/workspacefactory/index.html
index c45c449a1..92b4668e0 100644
--- a/demos/blockfactory/workspacefactory/index.html
+++ b/demos/blockfactory/workspacefactory/index.html
@@ -454,70 +454,6 @@ goog.require('goog.ui.ColorPicker');
   <category name="Functions" colour="290" custom="PROCEDURE"></category>
 </xml>
 <script type="text/javascript">
-  // Array of Blockly category colors, variety of hues with saturation 45%
-  // and value 65% as specified in Blockly Developer documentation:
-  // https://developers.google.com/blockly/guides/create-custom-blocks/define-blocks
-  var colors = ['#A65C5C',
-      '#A6635C',
-      '#A66A5C',
-      '#A6725C',
-      '#A6795C',
-      '#A6815C',
-      '#A6885C',
-      '#A6905C',
-      '#A6975C',
-      '#A69F5C',
-      '#A6A65C',
-      '#9FA65C',
-      '#97A65C',
-      '#90A65C',
-      '#88A65C',
-      '#81A65C',
-      '#79A65C',
-      '#6FA65C',
-      '#66A65C',
-      '#5EA65C',
-      '#5CA661',
-      '#5CA668',
-      '#5CA66F',
-      '#5CA677',
-      '#5CA67E',
-      '#5CA686',
-      '#5CA68D',
-      '#5CA695',
-      '#5CA69C',
-      '#5CA6A4',
-      '#5CA1A6',
-      '#5C9AA6',
-      '#5C92A6',
-      '#5C8BA6',
-      '#5C83A6',
-      '#5C7CA6',
-      '#5C74A6',
-      '#5C6AA6',
-      '#5C61A6',
-      '#5E5CA6',
-      '#665CA6',
-      '#6D5CA6',
-      '#745CA6',
-      '#7C5CA6',
-      '#835CA6',
-      '#8B5CA6',
-      '#925CA6',
-      '#9A5CA6',
-      '#A15CA6',
-      '#A65CA4',
-      '#A65C9C',
-      '#A65C95',
-      '#A65C8D',
-      '#A65C86',
-      '#A65C7E',
-      '#A65C77',
-      '#A65C6F',
-      '#A65C66',
-      '#A65C61',
-      '#A65C5E'];
-
   // Create empty workspace for configuring workspace.
   var toolboxWorkspace = Blockly.inject('toolbox_blocks',
     {grid:
@@ -726,20 +662,6 @@ goog.require('goog.ui.ColorPicker');
     }
   });
 
-  // Create color picker with specific set of Blockly colors.
-  var colorPicker = new goog.ui.ColorPicker();
-  colorPicker.setColors(colors);
-  // Create and render the popup color picker and attach to button.
-  var popupPicker = new goog.ui.PopupColorPicker(null, colorPicker);
-  popupPicker.render();
-  popupPicker.attach(document.getElementById('dropdown_color'));
-  popupPicker.setFocusable(true);
-  goog.events.listen(popupPicker, 'change', function(e) {
-        controller.changeSelectedCategoryColor(popupPicker.getSelectedColor());
-        document.getElementById('dropdownDiv_editCategory').classList.remove
-            ("show");
-      });
-
   // Disable category editing buttons until categories are created.
   document.getElementById('button_remove').disabled = true;
   document.getElementById('button_up').disabled = true;
diff --git a/demos/blockfactory/workspacefactory/wfactory_controller.js b/demos/blockfactory/workspacefactory/wfactory_controller.js
index a9349909f..c4da7257e 100644
--- a/demos/blockfactory/workspacefactory/wfactory_controller.js
+++ b/demos/blockfactory/workspacefactory/wfactory_controller.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
@@ -108,8 +108,8 @@ WorkspaceFactoryController.prototype.addCategory = function() {
   // After possibly creating a category, check again if it's the first category.
   var isFirstCategory = !this.model.hasElements();
   // Get name from user.
-  name = this.promptForNewCategoryName('Enter the name of your new category: ');
-  if (!name) {  //Exit if cancelled.
+  name = this.promptForNewCategoryName('Enter the name of your new category:');
+  if (!name) {  // Exit if cancelled.
     return;
   }
   // Create category.
@@ -117,7 +117,7 @@ WorkspaceFactoryController.prototype.addCategory = function() {
   // Switch to category.
   this.switchElement(this.model.getCategoryIdByName(name));
 
-   // Sets the default options for injecting the workspace
+  // Sets the default options for injecting the workspace
   // when there are categories if adding the first category.
   if (isFirstCategory) {
     this.view.setCategoryOptions(this.model.hasElements());
@@ -152,7 +152,7 @@ WorkspaceFactoryController.prototype.createCategory = function(name) {
  */
 WorkspaceFactoryController.prototype.addClickToSwitch = function(tab, id) {
   var self = this;
-  var clickFunction = function(id) {  // Keep this in scope for switchElement
+  var clickFunction = function(id) {  // Keep this in scope for switchElement.
     return function() {
       self.switchElement(id);
     };
@@ -237,15 +237,18 @@ WorkspaceFactoryController.prototype.removeElement = function() {
 /**
  * Gets a valid name for a new category from the user.
  * @param {string} promptString Prompt for the user to enter a name.
+ * @param {string=} opt_oldName The current name.
  * @return {string} Valid name for a new category, or null if cancelled.
  */
 WorkspaceFactoryController.prototype.promptForNewCategoryName =
-    function(promptString) {
+    function(promptString, opt_oldName) {
+  var defaultName = opt_oldName;
   do {
-    var name = prompt(promptString);
+    var name = prompt(promptString, defaultName);
     if (!name) {  // If cancelled.
       return null;
     }
+    defaultName = name;
   } while (this.model.hasCategoryByName(name));
   return name;
 };
@@ -316,9 +319,12 @@ WorkspaceFactoryController.prototype.clearAndLoadElement = function(id) {
  */
 WorkspaceFactoryController.prototype.exportXmlFile = function(exportMode) {
   // Get file name.
-  var fileName = prompt('File Name for ' + (exportMode ==
-      WorkspaceFactoryController.MODE_TOOLBOX ? 'toolbox XML: ' :
-      'pre-loaded workspace XML: '));
+  if (exportMode == WorkspaceFactoryController.MODE_TOOLBOX) {
+    var fileName = prompt('File Name for toolbox XML:', 'toolbox.xml');
+  } else {
+    var fileName = prompt('File Name for pre-loaded workspace XML:',
+                          'workspace.xml');
+  }
   if (!fileName) {  // If cancelled.
     return;
   }
@@ -349,7 +355,8 @@ WorkspaceFactoryController.prototype.exportXmlFile = function(exportMode) {
  * file name from the user and downloads the options object to that file.
  */
 WorkspaceFactoryController.prototype.exportInjectFile = function() {
-  var fileName = prompt('File Name for starter Blockly workspace code: ');
+  var fileName = prompt('File Name for starter Blockly workspace code:',
+                        'workspace.js');
   if (!fileName) {  // If cancelled.
     return;
   }
@@ -474,18 +481,20 @@ WorkspaceFactoryController.prototype.reinjectPreview = function(tree) {
  * currently in use, exits if user presses cancel.
  */
 WorkspaceFactoryController.prototype.changeCategoryName = function() {
+  var selected = this.model.getSelected();
   // Return if a category is not selected.
-  if (this.model.getSelected().type != ListElement.TYPE_CATEGORY) {
+  if (selected.type != ListElement.TYPE_CATEGORY) {
     return;
   }
   // Get new name from user.
+  window.foo = selected;
   var newName = this.promptForNewCategoryName('What do you want to change this'
-    + ' category\'s name to?');
+    + ' category\'s name to?', selected.name);
   if (!newName) {  // If cancelled.
     return;
   }
   // Change category name.
-  this.model.getSelected().changeName(newName);
+  selected.changeName(newName);
   this.view.updateCategoryName(newName, this.model.getSelectedId());
   // Update preview.
   this.updatePreview();
diff --git a/demos/blockfactory/workspacefactory/wfactory_generator.js b/demos/blockfactory/workspacefactory/wfactory_generator.js
index 8fe952f3b..d49b9b377 100644
--- a/demos/blockfactory/workspacefactory/wfactory_generator.js
+++ b/demos/blockfactory/workspacefactory/wfactory_generator.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
diff --git a/demos/blockfactory/workspacefactory/wfactory_init.js b/demos/blockfactory/workspacefactory/wfactory_init.js
index cf51cc792..2a0cb5db9 100644
--- a/demos/blockfactory/workspacefactory/wfactory_init.js
+++ b/demos/blockfactory/workspacefactory/wfactory_init.js
@@ -1,12 +1,12 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
- * You may not use this file except in compliance with the License.
+ * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
@@ -65,68 +65,20 @@ WorkspaceFactoryInit.initWorkspaceFactory = function(controller) {
 WorkspaceFactoryInit.initColorPicker_ = function(controller) {
   // Array of Blockly category colors, variety of hues with saturation 45%
   // and value 65% as specified in Blockly Developer documentation:
-  // https://developers.google.com/blockly/guides/create-custom-blocks/define-blocks
+  // developers.google.com/blockly/guides/create-custom-blocks/define-blocks
   var colors = [
-    '#A65C5C',
-    '#A6635C',
-    '#A66A5C',
-    '#A6725C',
-    '#A6795C',
-    '#A6815C',
-    '#A6885C',
-    '#A6905C',
-    '#A6975C',
-    '#A69F5C',
-    '#A6A65C',
-    '#9FA65C',
-    '#97A65C',
-    '#90A65C',
-    '#88A65C',
-    '#81A65C',
-    '#79A65C',
-    '#6FA65C',
-    '#66A65C',
-    '#5EA65C',
-    '#5CA661',
-    '#5CA668',
-    '#5CA66F',
-    '#5CA677',
-    '#5CA67E',
-    '#5CA686',
-    '#5CA68D',
-    '#5CA695',
-    '#5CA69C',
-    '#5CA6A4',
-    '#5CA1A6',
-    '#5C9AA6',
-    '#5C92A6',
-    '#5C8BA6',
-    '#5C83A6',
-    '#5C7CA6',
-    '#5C74A6',
-    '#5C6AA6',
-    '#5C61A6',
-    '#5E5CA6',
-    '#665CA6',
-    '#6D5CA6',
-    '#745CA6',
-    '#7C5CA6',
-    '#835CA6',
-    '#8B5CA6',
-    '#925CA6',
-    '#9A5CA6',
-    '#A15CA6',
-    '#A65CA4',
-    '#A65C9C',
-    '#A65C95',
-    '#A65C8D',
-    '#A65C86',
-    '#A65C7E',
-    '#A65C77',
-    '#A65C6F',
-    '#A65C66',
-    '#A65C61',
-    '#A65C5E'
+    '#A65C5C', '#A6635C', '#A66A5C', '#A6725C', '#A6795C',
+    '#A6815C', '#A6885C', '#A6905C', '#A6975C', '#A69F5C',
+    '#A6A65C', '#9FA65C', '#97A65C', '#90A65C', '#88A65C',
+    '#81A65C', '#79A65C', '#6FA65C', '#66A65C', '#5EA65C',
+    '#5CA661', '#5CA668', '#5CA66F', '#5CA677', '#5CA67E',
+    '#5CA686', '#5CA68D', '#5CA695', '#5CA69C', '#5CA6A4',
+    '#5CA1A6', '#5C9AA6', '#5C92A6', '#5C8BA6', '#5C83A6',
+    '#5C7CA6', '#5C74A6', '#5C6AA6', '#5C61A6', '#5E5CA6',
+    '#665CA6', '#6D5CA6', '#745CA6', '#7C5CA6', '#835CA6',
+    '#8B5CA6', '#925CA6', '#9A5CA6', '#A15CA6', '#A65CA4',
+    '#A65C9C', '#A65C95', '#A65C8D', '#A65C86', '#A65C7E',
+    '#A65C77', '#A65C6F', '#A65C66', '#A65C61', '#A65C5E'
   ];
 
   // Create color picker with specific set of Blockly colors.
diff --git a/demos/blockfactory/workspacefactory/wfactory_model.js b/demos/blockfactory/workspacefactory/wfactory_model.js
index c68c8c837..f2f8c3548 100644
--- a/demos/blockfactory/workspacefactory/wfactory_model.js
+++ b/demos/blockfactory/workspacefactory/wfactory_model.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
diff --git a/demos/blockfactory/workspacefactory/wfactory_view.js b/demos/blockfactory/workspacefactory/wfactory_view.js
index 9fcee0ba7..245c7e5cb 100644
--- a/demos/blockfactory/workspacefactory/wfactory_view.js
+++ b/demos/blockfactory/workspacefactory/wfactory_view.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * Visual Blocks Editor
+ * Blockly Demos: Block Factory
  *
  * Copyright 2016 Google Inc.
  * https://developers.google.com/blockly/
@@ -112,11 +112,10 @@ WorkspaceFactoryView.prototype.updateState = function(selectedIndex, selected) {
   document.getElementById('button_editCategory').disabled = selectedIndex < 0 ||
       selected.type != ListElement.TYPE_CATEGORY;
   document.getElementById('button_remove').disabled = selectedIndex < 0;
-  document.getElementById('button_up').disabled =
-      selectedIndex <= 0 ? true : false;
+  document.getElementById('button_up').disabled = selectedIndex <= 0;
   var table = document.getElementById('categoryTable');
   document.getElementById('button_down').disabled = selectedIndex >=
-      table.rows.length - 1 || selectedIndex < 0 ? true : false;
+      table.rows.length - 1 || selectedIndex < 0;
   // Disable/enable the workspace as necessary.
   this.disableWorkspace(this.shouldDisableWorkspace(selected));
 };