diff --git a/blockly_compressed.js b/blockly_compressed.js
index ed97b2512..fd3879d2d 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -1240,28 +1240,27 @@ Blockly.Toolbox.TreeNode=function(a,b,c,d){goog.ui.tree.TreeNode.call(this,b,c,d
 Blockly.Toolbox.TreeNode.prototype.onMouseDown=function(a){this.hasChildren()&&this.isUserCollapsible_?(this.toggle(),this.select()):this.isSelected()?this.getTree().setSelectedItem(null):this.select();this.updateRow()};Blockly.Toolbox.TreeNode.prototype.onDoubleClick_=function(a){};Blockly.Toolbox.TreeSeparator=function(){Blockly.Toolbox.TreeNode.call(this,null,"",Blockly.Toolbox.TreeSeparator.CONFIG_)};goog.inherits(Blockly.Toolbox.TreeSeparator,Blockly.Toolbox.TreeNode);
 Blockly.Toolbox.TreeSeparator.CONFIG_={cssTreeRow:"blocklyTreeSeparator"};
 // Copyright 2013 Google Inc.  Apache License 2.0
-Blockly.Css={};Blockly.Css.Cursor={OPEN:"handopen",CLOSED:"handclosed",DELETE:"handdelete"};Blockly.Css.currentCursor_="";Blockly.Css.styleSheet_=null;Blockly.Css.mediaPath_="";Blockly.Css.inject=function(){var a=Blockly.Css.CONTENT.join("\n");Blockly.Css.mediaPath_=Blockly.pathToMedia.replace(/[\\\/]$/,"");a=a.replace(/<<<PATH>>>/g,Blockly.Css.mediaPath_);Blockly.Css.styleSheet_=goog.cssom.addCssText(a).sheet;Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN)};
+Blockly.Css={};Blockly.Css.Cursor={OPEN:"handopen",CLOSED:"handclosed",DELETE:"handdelete"};Blockly.Css.currentCursor_="";Blockly.Css.styleSheet_=null;Blockly.Css.mediaPath_="";Blockly.Css.inject=function(){var a=".blocklyDraggable {}\n";Blockly.hasCss&&(a+=Blockly.Css.CONTENT.join("\n"));Blockly.Css.mediaPath_=Blockly.pathToMedia.replace(/[\\\/]$/,"");a=a.replace(/<<<PATH>>>/g,Blockly.Css.mediaPath_);Blockly.Css.styleSheet_=goog.cssom.addCssText(a).sheet;Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN)};
 Blockly.Css.setCursor=function(a){if(!Blockly.readOnly&&Blockly.Css.currentCursor_!=a){Blockly.Css.currentCursor_=a;var b="url("+Blockly.Css.mediaPath_+"/"+a+".cur) "+(a==Blockly.Css.Cursor.OPEN?"8 5":"7 3")+", auto";goog.cssom.replaceCssRule("",".blocklyDraggable {\n  cursor: "+b+";\n}\n",Blockly.Css.styleSheet_,0);for(var c=document.getElementsByClassName("blocklyToolboxDiv"),d=0,e;e=c[d];d++)e.style.cursor=a==Blockly.Css.Cursor.OPEN?"":b;Blockly.svg&&(Blockly.svg.style.cursor=a==Blockly.Css.Cursor.OPEN?
 "":b)}};
-Blockly.Css.CONTENT=[".blocklyDraggable {","}",".blocklySvg {","  background-color: #fff;","  border: 1px solid #ddd;","  overflow: hidden;","}",".blocklyWidgetDiv {","  position: absolute;","  display: none;","  z-index: 999;","}",".blocklyResizeSE {","  fill: #aaa;","  cursor: se-resize;","}",".blocklyResizeSW {","  fill: #aaa;","  cursor: sw-resize;","}",".blocklyResizeLine {","  stroke-width: 1;","  stroke: #888;","}",".blocklyHighlightedConnectionPath {","  stroke-width: 4px;","  stroke: #fc3;","  fill: none;",
-"}",".blocklyPathLight {","  fill: none;","  stroke-width: 2;","  stroke-linecap: round;","}",".blocklySelected>.blocklyPath {","  stroke-width: 3px;","  stroke: #fc3;","}",".blocklySelected>.blocklyPathLight {","  display: none;","}",".blocklyDragging>.blocklyPath,",".blocklyDragging>.blocklyPathLight {","  fill-opacity: .8;","  stroke-opacity: .8;","}",".blocklyDragging>.blocklyPathDark {","  display: none;","}",".blocklyDisabled>.blocklyPath {","  fill-opacity: .5;","  stroke-opacity: .5;","}",
-".blocklyDisabled>.blocklyPathLight,",".blocklyDisabled>.blocklyPathDark {","  display: none;","}",".blocklyText {","  cursor: default;","  font-family: sans-serif;","  font-size: 11pt;","  fill: #fff;","}",".blocklyNonEditableText>text {","  pointer-events: none;","}",".blocklyNonEditableText>rect,",".blocklyEditableText>rect {","  fill: #fff;","  fill-opacity: .6;","}",".blocklyNonEditableText>text,",".blocklyEditableText>text {","  fill: #000;","}",".blocklyEditableText:hover>rect {","  stroke-width: 2;",
-"  stroke: #fff;","}",".blocklyBubbleText {","  fill: #000;","}",".blocklySvg text {","  -moz-user-select: none;","  -webkit-user-select: none;","  user-select: none;","  cursor: inherit;","}",".blocklyHidden {","  display: none;","}",".blocklyFieldDropdown:not(.blocklyHidden) {","  display: block;","}",".blocklyTooltipBackground {","  fill: #ffffc7;","  stroke-width: 1px;","  stroke: #d8d8d8;","}",".blocklyTooltipShadow,",".blocklyDropdownMenuShadow {","  fill: #bbb;","  filter: url(#blocklyShadowFilter);",
-"}",".blocklyTooltipText {","  font-family: sans-serif;","  font-size: 9pt;","  fill: #000;","}",".blocklyIconShield {","  cursor: default;","  fill: #00c;","  stroke-width: 1px;","  stroke: #ccc;","}",".blocklyIconGroup:hover>.blocklyIconShield {","  fill: #00f;","  stroke: #fff;","}",".blocklyIconGroup:hover>.blocklyIconMark {","  fill: #fff;","}",".blocklyIconMark {","  cursor: default !important;","  font-family: sans-serif;","  font-size: 9pt;","  font-weight: bold;","  fill: #ccc;","  text-anchor: middle;",
-"}",".blocklyWarningBody {","}",".blocklyMinimalBody {","  margin: 0;","  padding: 0;","}",".blocklyCommentTextarea {","  margin: 0;","  padding: 2px;","  border: 0;","  resize: none;","  background-color: #ffc;","}",".blocklyHtmlInput {","  font-family: sans-serif;","  font-size: 11pt;","  border: none;","  outline: none;","  width: 100%","}",".blocklyMutatorBackground {","  fill: #fff;","  stroke-width: 1;","  stroke: #ddd;","}",".blocklyFlyoutBackground {","  fill: #ddd;","  fill-opacity: .8;",
-"}",".blocklyColourBackground {","  fill: #666;","}",".blocklyScrollbarBackground {","  fill: #fff;","  stroke-width: 1;","  stroke: #e4e4e4;","}",".blocklyScrollbarKnob {","  fill: #ccc;","}",".blocklyScrollbarBackground:hover+.blocklyScrollbarKnob,",".blocklyScrollbarKnob:hover {","  fill: #bbb;","}",".blocklyInvalidInput {","  background: #faa;","}",".blocklyAngleCircle {","  stroke: #444;","  stroke-width: 1;","  fill: #ddd;","  fill-opacity: .8;","}",".blocklyAngleMarks {","  stroke: #444;",
-"  stroke-width: 1;","}",".blocklyAngleGauge {","  fill: #f88;","  fill-opacity: .8;  ","}",".blocklyAngleLine {","  stroke: #f00;","  stroke-width: 2;","  stroke-linecap: round;","}",".blocklyContextMenu {","  border-radius: 4px;","}",".blocklyDropdownMenu {","  padding: 0 !important;","}",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-icon {","  background: url(<<<PATH>>>/sprites.png) no-repeat -48px -16px !important;",
-"}",".blocklyToolboxDiv {","  background-color: #ddd;","  display: none;","  overflow-x: visible;","  overflow-y: auto;","  position: absolute;","}",".blocklyTreeRoot {","  padding: 4px 0;","}",".blocklyTreeRoot:focus {","  outline: none;","}",".blocklyTreeRow {","  line-height: 22px;","  height: 22px;","  padding-right: 1em;","  white-space: nowrap;","}",'.blocklyToolboxDiv[dir="RTL"] .blocklyTreeRow {',"  padding-right: 0;","  padding-left: 1em !important;","}",".blocklyTreeRow:hover {","  background-color: #e4e4e4;",
-"}",".blocklyTreeSeparator {","  height: 0px;","  border-bottom: solid #e5e5e5 1px;","  margin: 5px 0;","}",".blocklyTreeIcon {","  height: 16px;","  width: 16px;","  vertical-align: middle;","  background-image: url(<<<PATH>>>/sprites.png);","}",".blocklyTreeIconClosedLtr {","  background-position: -32px -1px;","}",".blocklyTreeIconClosedRtl {","  background-position: 0px -1px;","}",".blocklyTreeIconOpen {","  background-position: -16px -1px;","}",".blocklyTreeSelected>.blocklyTreeIconClosedLtr {",
-"  background-position: -32px -17px;","}",".blocklyTreeSelected>.blocklyTreeIconClosedRtl {","  background-position: 0px -17px;","}",".blocklyTreeSelected>.blocklyTreeIconOpen {","  background-position: -16px -17px;","}",".blocklyTreeIconNone,",".blocklyTreeSelected>.blocklyTreeIconNone {","  background-position: -48px -1px;","}",".blocklyTreeLabel {","  cursor: default;","  font-family: sans-serif;","  font-size: 16px;","  padding: 0 3px;","  vertical-align: middle;","}",".blocklyTreeSelected  {",
-"  background-color: #57e !important;","}",".blocklyTreeSelected .blocklyTreeLabel {","  color: #fff;","}",".blocklyWidgetDiv .goog-palette {","  outline: none;","  cursor: default;","}",".blocklyWidgetDiv .goog-palette-table {","  border: 1px solid #666;","  border-collapse: collapse;","}",".blocklyWidgetDiv .goog-palette-cell {","  height: 13px;","  width: 15px;","  margin: 0;","  border: 0;","  text-align: center;","  vertical-align: middle;","  border-right: 1px solid #666;","  font-size: 1px;",
-"}",".blocklyWidgetDiv .goog-palette-colorswatch {","  position: relative;","  height: 13px;","  width: 15px;","  border: 1px solid #666;","}",".blocklyWidgetDiv .goog-palette-cell-hover .goog-palette-colorswatch {","  border: 1px solid #FFF;","}",".blocklyWidgetDiv .goog-palette-cell-selected .goog-palette-colorswatch {","  border: 1px solid #000;","  color: #fff;","}",".blocklyWidgetDiv .goog-menu {","  background: #fff;","  border-color: #ccc #666 #666 #ccc;","  border-style: solid;","  border-width: 1px;",
-"  cursor: default;","  font: normal 13px Arial, sans-serif;","  margin: 0;","  outline: none;","  padding: 4px 0;","  position: absolute;","  z-index: 20000;","}",".blocklyWidgetDiv .goog-menuitem {","  color: #000;","  font: normal 13px Arial, sans-serif;","  list-style: none;","  margin: 0;","  padding: 4px 7em 4px 28px;","  white-space: nowrap;","}",".blocklyWidgetDiv .goog-menuitem.goog-menuitem-rtl {","  padding-left: 7em;","  padding-right: 28px;","}",".blocklyWidgetDiv .goog-menu-nocheckbox .goog-menuitem,",
-".blocklyWidgetDiv .goog-menu-noicon .goog-menuitem {","  padding-left: 12px;","}",".blocklyWidgetDiv .goog-menu-noaccel .goog-menuitem {","  padding-right: 20px;","}",".blocklyWidgetDiv .goog-menuitem-content {","  color: #000;","  font: normal 13px Arial, sans-serif;","}",".blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-accel,",".blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-content {","  color: #ccc !important;","}",".blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-icon {",
-"  opacity: 0.3;","  -moz-opacity: 0.3;","  filter: alpha(opacity=30);","}",".blocklyWidgetDiv .goog-menuitem-highlight,",".blocklyWidgetDiv .goog-menuitem-hover {","  background-color: #d6e9f8;","  border-color: #d6e9f8;","  border-style: dotted;","  border-width: 1px 0;","  padding-bottom: 3px;","  padding-top: 3px;","}",".blocklyWidgetDiv .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-menuitem-icon {","  background-repeat: no-repeat;","  height: 16px;","  left: 6px;","  position: absolute;",
-"  right: auto;","  vertical-align: middle;","  width: 16px;","}",".blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-icon {","  left: auto;","  right: 6px;","}",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-icon {","  background: url(//ssl.gstatic.com/editor/editortoolbar.png) no-repeat -512px 0;","}",".blocklyWidgetDiv .goog-menuitem-accel {","  color: #999;",
-"  direction: ltr;","  left: auto;","  padding: 0 6px;","  position: absolute;","  right: 0;","  text-align: right;","}",".blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-accel {","  left: 0;","  right: auto;","  text-align: left;","}",".blocklyWidgetDiv .goog-menuitem-mnemonic-hint {","  text-decoration: underline;","}",".blocklyWidgetDiv .goog-menuitem-mnemonic-separator {","  color: #999;","  font-size: 12px;","  padding-left: 4px;","}",".blocklyWidgetDiv .goog-menuseparator {","  border-top: 1px solid #ccc;",
-"  margin: 4px 0;","  padding: 0;","}",""];
+Blockly.Css.CONTENT=[".blocklySvg {","  background-color: #fff;","  border: 1px solid #ddd;","  overflow: hidden;","}",".blocklyWidgetDiv {","  position: absolute;","  display: none;","  z-index: 999;","}",".blocklyResizeSE {","  fill: #aaa;","  cursor: se-resize;","}",".blocklyResizeSW {","  fill: #aaa;","  cursor: sw-resize;","}",".blocklyResizeLine {","  stroke-width: 1;","  stroke: #888;","}",".blocklyHighlightedConnectionPath {","  stroke-width: 4px;","  stroke: #fc3;","  fill: none;","}",".blocklyPathLight {",
+"  fill: none;","  stroke-width: 2;","  stroke-linecap: round;","}",".blocklySelected>.blocklyPath {","  stroke-width: 3px;","  stroke: #fc3;","}",".blocklySelected>.blocklyPathLight {","  display: none;","}",".blocklyDragging>.blocklyPath,",".blocklyDragging>.blocklyPathLight {","  fill-opacity: .8;","  stroke-opacity: .8;","}",".blocklyDragging>.blocklyPathDark {","  display: none;","}",".blocklyDisabled>.blocklyPath {","  fill-opacity: .5;","  stroke-opacity: .5;","}",".blocklyDisabled>.blocklyPathLight,",
+".blocklyDisabled>.blocklyPathDark {","  display: none;","}",".blocklyText {","  cursor: default;","  font-family: sans-serif;","  font-size: 11pt;","  fill: #fff;","}",".blocklyNonEditableText>text {","  pointer-events: none;","}",".blocklyNonEditableText>rect,",".blocklyEditableText>rect {","  fill: #fff;","  fill-opacity: .6;","}",".blocklyNonEditableText>text,",".blocklyEditableText>text {","  fill: #000;","}",".blocklyEditableText:hover>rect {","  stroke-width: 2;","  stroke: #fff;","}",".blocklyBubbleText {",
+"  fill: #000;","}",".blocklySvg text {","  -moz-user-select: none;","  -webkit-user-select: none;","  user-select: none;","  cursor: inherit;","}",".blocklyHidden {","  display: none;","}",".blocklyFieldDropdown:not(.blocklyHidden) {","  display: block;","}",".blocklyTooltipBackground {","  fill: #ffffc7;","  stroke-width: 1px;","  stroke: #d8d8d8;","}",".blocklyTooltipShadow,",".blocklyDropdownMenuShadow {","  fill: #bbb;","  filter: url(#blocklyShadowFilter);","}",".blocklyTooltipText {","  font-family: sans-serif;",
+"  font-size: 9pt;","  fill: #000;","}",".blocklyIconShield {","  cursor: default;","  fill: #00c;","  stroke-width: 1px;","  stroke: #ccc;","}",".blocklyIconGroup:hover>.blocklyIconShield {","  fill: #00f;","  stroke: #fff;","}",".blocklyIconGroup:hover>.blocklyIconMark {","  fill: #fff;","}",".blocklyIconMark {","  cursor: default !important;","  font-family: sans-serif;","  font-size: 9pt;","  font-weight: bold;","  fill: #ccc;","  text-anchor: middle;","}",".blocklyWarningBody {","}",".blocklyMinimalBody {",
+"  margin: 0;","  padding: 0;","}",".blocklyCommentTextarea {","  margin: 0;","  padding: 2px;","  border: 0;","  resize: none;","  background-color: #ffc;","}",".blocklyHtmlInput {","  font-family: sans-serif;","  font-size: 11pt;","  border: none;","  outline: none;","  width: 100%","}",".blocklyMutatorBackground {","  fill: #fff;","  stroke-width: 1;","  stroke: #ddd;","}",".blocklyFlyoutBackground {","  fill: #ddd;","  fill-opacity: .8;","}",".blocklyColourBackground {","  fill: #666;","}",".blocklyScrollbarBackground {",
+"  fill: #fff;","  stroke-width: 1;","  stroke: #e4e4e4;","}",".blocklyScrollbarKnob {","  fill: #ccc;","}",".blocklyScrollbarBackground:hover+.blocklyScrollbarKnob,",".blocklyScrollbarKnob:hover {","  fill: #bbb;","}",".blocklyInvalidInput {","  background: #faa;","}",".blocklyAngleCircle {","  stroke: #444;","  stroke-width: 1;","  fill: #ddd;","  fill-opacity: .8;","}",".blocklyAngleMarks {","  stroke: #444;","  stroke-width: 1;","}",".blocklyAngleGauge {","  fill: #f88;","  fill-opacity: .8;  ",
+"}",".blocklyAngleLine {","  stroke: #f00;","  stroke-width: 2;","  stroke-linecap: round;","}",".blocklyContextMenu {","  border-radius: 4px;","}",".blocklyDropdownMenu {","  padding: 0 !important;","}",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-icon {","  background: url(<<<PATH>>>/sprites.png) no-repeat -48px -16px !important;","}",".blocklyToolboxDiv {","  background-color: #ddd;","  display: none;","  overflow-x: visible;",
+"  overflow-y: auto;","  position: absolute;","}",".blocklyTreeRoot {","  padding: 4px 0;","}",".blocklyTreeRoot:focus {","  outline: none;","}",".blocklyTreeRow {","  line-height: 22px;","  height: 22px;","  padding-right: 1em;","  white-space: nowrap;","}",'.blocklyToolboxDiv[dir="RTL"] .blocklyTreeRow {',"  padding-right: 0;","  padding-left: 1em !important;","}",".blocklyTreeRow:hover {","  background-color: #e4e4e4;","}",".blocklyTreeSeparator {","  height: 0px;","  border-bottom: solid #e5e5e5 1px;",
+"  margin: 5px 0;","}",".blocklyTreeIcon {","  height: 16px;","  width: 16px;","  vertical-align: middle;","  background-image: url(<<<PATH>>>/sprites.png);","}",".blocklyTreeIconClosedLtr {","  background-position: -32px -1px;","}",".blocklyTreeIconClosedRtl {","  background-position: 0px -1px;","}",".blocklyTreeIconOpen {","  background-position: -16px -1px;","}",".blocklyTreeSelected>.blocklyTreeIconClosedLtr {","  background-position: -32px -17px;","}",".blocklyTreeSelected>.blocklyTreeIconClosedRtl {",
+"  background-position: 0px -17px;","}",".blocklyTreeSelected>.blocklyTreeIconOpen {","  background-position: -16px -17px;","}",".blocklyTreeIconNone,",".blocklyTreeSelected>.blocklyTreeIconNone {","  background-position: -48px -1px;","}",".blocklyTreeLabel {","  cursor: default;","  font-family: sans-serif;","  font-size: 16px;","  padding: 0 3px;","  vertical-align: middle;","}",".blocklyTreeSelected  {","  background-color: #57e !important;","}",".blocklyTreeSelected .blocklyTreeLabel {","  color: #fff;",
+"}",".blocklyWidgetDiv .goog-palette {","  outline: none;","  cursor: default;","}",".blocklyWidgetDiv .goog-palette-table {","  border: 1px solid #666;","  border-collapse: collapse;","}",".blocklyWidgetDiv .goog-palette-cell {","  height: 13px;","  width: 15px;","  margin: 0;","  border: 0;","  text-align: center;","  vertical-align: middle;","  border-right: 1px solid #666;","  font-size: 1px;","}",".blocklyWidgetDiv .goog-palette-colorswatch {","  position: relative;","  height: 13px;","  width: 15px;",
+"  border: 1px solid #666;","}",".blocklyWidgetDiv .goog-palette-cell-hover .goog-palette-colorswatch {","  border: 1px solid #FFF;","}",".blocklyWidgetDiv .goog-palette-cell-selected .goog-palette-colorswatch {","  border: 1px solid #000;","  color: #fff;","}",".blocklyWidgetDiv .goog-menu {","  background: #fff;","  border-color: #ccc #666 #666 #ccc;","  border-style: solid;","  border-width: 1px;","  cursor: default;","  font: normal 13px Arial, sans-serif;","  margin: 0;","  outline: none;","  padding: 4px 0;",
+"  position: absolute;","  z-index: 20000;","}",".blocklyWidgetDiv .goog-menuitem {","  color: #000;","  font: normal 13px Arial, sans-serif;","  list-style: none;","  margin: 0;","  padding: 4px 7em 4px 28px;","  white-space: nowrap;","}",".blocklyWidgetDiv .goog-menuitem.goog-menuitem-rtl {","  padding-left: 7em;","  padding-right: 28px;","}",".blocklyWidgetDiv .goog-menu-nocheckbox .goog-menuitem,",".blocklyWidgetDiv .goog-menu-noicon .goog-menuitem {","  padding-left: 12px;","}",".blocklyWidgetDiv .goog-menu-noaccel .goog-menuitem {",
+"  padding-right: 20px;","}",".blocklyWidgetDiv .goog-menuitem-content {","  color: #000;","  font: normal 13px Arial, sans-serif;","}",".blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-accel,",".blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-content {","  color: #ccc !important;","}",".blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-icon {","  opacity: 0.3;","  -moz-opacity: 0.3;","  filter: alpha(opacity=30);","}",".blocklyWidgetDiv .goog-menuitem-highlight,",".blocklyWidgetDiv .goog-menuitem-hover {",
+"  background-color: #d6e9f8;","  border-color: #d6e9f8;","  border-style: dotted;","  border-width: 1px 0;","  padding-bottom: 3px;","  padding-top: 3px;","}",".blocklyWidgetDiv .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-menuitem-icon {","  background-repeat: no-repeat;","  height: 16px;","  left: 6px;","  position: absolute;","  right: auto;","  vertical-align: middle;","  width: 16px;","}",".blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-icon {",
+"  left: auto;","  right: 6px;","}",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-icon {","  background: url(//ssl.gstatic.com/editor/editortoolbar.png) no-repeat -512px 0;","}",".blocklyWidgetDiv .goog-menuitem-accel {","  color: #999;","  direction: ltr;","  left: auto;","  padding: 0 6px;","  position: absolute;","  right: 0;","  text-align: right;","}",".blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-accel {","  left: 0;",
+"  right: auto;","  text-align: left;","}",".blocklyWidgetDiv .goog-menuitem-mnemonic-hint {","  text-decoration: underline;","}",".blocklyWidgetDiv .goog-menuitem-mnemonic-separator {","  color: #999;","  font-size: 12px;","  padding-left: 4px;","}",".blocklyWidgetDiv .goog-menuseparator {","  border-top: 1px solid #ccc;","  margin: 4px 0;","  padding: 0;","}",""];
 // Copyright 2013 Google Inc.  Apache License 2.0
 Blockly.WidgetDiv={};Blockly.WidgetDiv.DIV=null;Blockly.WidgetDiv.owner_=null;Blockly.WidgetDiv.dispose_=null;Blockly.WidgetDiv.show=function(a,b){Blockly.WidgetDiv.hide();Blockly.WidgetDiv.owner_=a;Blockly.WidgetDiv.dispose_=b;Blockly.WidgetDiv.DIV.style.display="block"};Blockly.WidgetDiv.hide=function(){Blockly.WidgetDiv.owner_&&(Blockly.WidgetDiv.DIV.style.display="none",Blockly.WidgetDiv.dispose_&&Blockly.WidgetDiv.dispose_(),Blockly.WidgetDiv.owner_=null,Blockly.WidgetDiv.dispose_=null,goog.dom.removeChildren(Blockly.WidgetDiv.DIV))};
 Blockly.WidgetDiv.isVisible=function(){return!!Blockly.WidgetDiv.owner_};Blockly.WidgetDiv.hideIfOwner=function(a){Blockly.WidgetDiv.owner_==a&&Blockly.WidgetDiv.hide()};Blockly.WidgetDiv.position=function(a,b,c,d){b<d.y&&(b=d.y);Blockly.RTL?a>c.width+d.x&&(a=c.width+d.x):a<d.x&&(a=d.x);Blockly.WidgetDiv.DIV.style.left=a+"px";Blockly.WidgetDiv.DIV.style.top=b+"px"};
@@ -1270,7 +1269,7 @@ Blockly.inject=function(a,b){if(!goog.dom.contains(document,a))throw"Error: cont
 Blockly.parseToolboxTree_=function(a){a?("string"!=typeof a&&"undefined"==typeof XSLTProcessor&&(a=a.outerHTML),"string"==typeof a&&(a=Blockly.Xml.textToDom(a))):a=null;return a};
 Blockly.parseOptions_=function(a){var b=!!a.readOnly;if(b)var c=!1,d=!1,e=!1,f=!1,g=!1,h=null;else h=Blockly.parseToolboxTree_(a.toolbox),c=Boolean(h&&h.getElementsByTagName("category").length),d=a.trashcan,void 0===d&&(d=c),e=a.collapse,void 0===e&&(e=c),f=a.comments,void 0===f&&(f=c),g=a.disable,void 0===g&&(g=c);var k=a.scrollbars;void 0===k&&(k=c);var l=a.sounds;void 0===l&&(l=!0);var p=a.css;void 0===p&&(p=!0);var n=!!a.realtime,q=n?a.realtimeOptions:void 0;Blockly.RTL=!!a.rtl;Blockly.collapse=
 e;Blockly.comments=f;Blockly.disable=g;Blockly.readOnly=b;Blockly.maxBlocks=a.maxBlocks||Infinity;a.media?Blockly.pathToMedia=a.media:a.path&&(Blockly.pathToMedia=a.path+"media/");Blockly.hasCategories=c;Blockly.hasScrollbars=k;Blockly.hasTrashcan=d;Blockly.hasSounds=l;Blockly.hasCss=p;Blockly.languageTree=h;Blockly.enableRealtime=n;Blockly.realtimeOptions=q};
-Blockly.createDom_=function(a){a.setAttribute("dir","LTR");goog.ui.Component.setDefaultRightToLeft(Blockly.RTL);Blockly.hasCss&&Blockly.Css.inject();var b=Blockly.createSvgElement("svg",{xmlns:"http://www.w3.org/2000/svg","xmlns:html":"http://www.w3.org/1999/xhtml","xmlns:xlink":"http://www.w3.org/1999/xlink",version:"1.1","class":"blocklySvg"},null),c=Blockly.createSvgElement("defs",{},b),d,e;d=Blockly.createSvgElement("filter",{id:"blocklyEmboss"},c);Blockly.createSvgElement("feGaussianBlur",{"in":"SourceAlpha",
+Blockly.createDom_=function(a){a.setAttribute("dir","LTR");goog.ui.Component.setDefaultRightToLeft(Blockly.RTL);Blockly.Css.inject();var b=Blockly.createSvgElement("svg",{xmlns:"http://www.w3.org/2000/svg","xmlns:html":"http://www.w3.org/1999/xhtml","xmlns:xlink":"http://www.w3.org/1999/xlink",version:"1.1","class":"blocklySvg"},null),c=Blockly.createSvgElement("defs",{},b),d,e;d=Blockly.createSvgElement("filter",{id:"blocklyEmboss"},c);Blockly.createSvgElement("feGaussianBlur",{"in":"SourceAlpha",
 stdDeviation:1,result:"blur"},d);e=Blockly.createSvgElement("feSpecularLighting",{"in":"blur",surfaceScale:1,specularConstant:.5,specularExponent:10,"lighting-color":"white",result:"specOut"},d);Blockly.createSvgElement("fePointLight",{x:-5E3,y:-1E4,z:2E4},e);Blockly.createSvgElement("feComposite",{"in":"specOut",in2:"SourceAlpha",operator:"in",result:"specOut"},d);Blockly.createSvgElement("feComposite",{"in":"SourceGraphic",in2:"specOut",operator:"arithmetic",k1:0,k2:1,k3:1,k4:0},d);d=Blockly.createSvgElement("filter",
 {id:"blocklyTrashcanShadowFilter"},c);Blockly.createSvgElement("feGaussianBlur",{"in":"SourceAlpha",stdDeviation:2,result:"blur"},d);Blockly.createSvgElement("feOffset",{"in":"blur",dx:1,dy:1,result:"offsetBlur"},d);d=Blockly.createSvgElement("feMerge",{},d);Blockly.createSvgElement("feMergeNode",{"in":"offsetBlur"},d);Blockly.createSvgElement("feMergeNode",{"in":"SourceGraphic"},d);d=Blockly.createSvgElement("filter",{id:"blocklyShadowFilter"},c);Blockly.createSvgElement("feGaussianBlur",{stdDeviation:2},
 d);c=Blockly.createSvgElement("pattern",{id:"blocklyDisabledPattern",patternUnits:"userSpaceOnUse",width:10,height:10},c);Blockly.createSvgElement("rect",{width:10,height:10,fill:"#aaa"},c);Blockly.createSvgElement("path",{d:"M 0 0 L 10 10 M 10 0 L 0 10",stroke:"#cc0"},c);Blockly.mainWorkspace=new Blockly.WorkspaceSvg(Blockly.getMainWorkspaceMetrics_,Blockly.setMainWorkspaceMetrics_);b.appendChild(Blockly.mainWorkspace.createDom());Blockly.mainWorkspace.maxBlocks=Blockly.maxBlocks;Blockly.readOnly||
diff --git a/core/css.js b/core/css.js
index 369dc12dd..d8dfd0a10 100644
--- a/core/css.js
+++ b/core/css.js
@@ -67,7 +67,11 @@ Blockly.Css.mediaPath_ = '';
  * c) The CSS content may be made dynamic depending on init options.
  */
 Blockly.Css.inject = function() {
-  var text = Blockly.Css.CONTENT.join('\n');
+  // Placeholder for cursor rule.  Must be first rule (index 0).
+  var text = '.blocklyDraggable {}\n';
+  if (Blockly.hasCss) {
+    text += Blockly.Css.CONTENT.join('\n');
+  }
   // Strip off any trailing slash (either Unix or Windows).
   Blockly.Css.mediaPath_ = Blockly.pathToMedia.replace(/[\\\/]$/, '');
   text = text.replace(/<<<PATH>>>/g, Blockly.Css.mediaPath_);
@@ -124,10 +128,6 @@ Blockly.Css.setCursor = function(cursor) {
  * Array making up the CSS content for Blockly.
  */
 Blockly.Css.CONTENT = [
-  '.blocklyDraggable {',
-    // Placeholder for cursor rule.  Must be first rule (index 0).
-  '}',
-
   '.blocklySvg {',
   '  background-color: #fff;',
   '  border: 1px solid #ddd;',
diff --git a/core/inject.js b/core/inject.js
index f3247b29f..4bbd2bef1 100644
--- a/core/inject.js
+++ b/core/inject.js
@@ -169,9 +169,7 @@ Blockly.createDom_ = function(container) {
   goog.ui.Component.setDefaultRightToLeft(Blockly.RTL);
 
   // Load CSS.
-  if (Blockly.hasCss) {
-    Blockly.Css.inject();
-  }
+  Blockly.Css.inject();
 
   // Build the SVG DOM.
   /*