diff --git a/blockly_compressed.js b/blockly_compressed.js
index e3299e581..87eeac918 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -1186,7 +1186,7 @@ Blockly.FieldDropdown=function(a,b){this.menuGenerator_=a;this.setChangeHandler(
 Blockly.FieldDropdown.prototype.init=function(a){this.sourceBlock_||(this.arrow_=Blockly.createSvgElement("tspan",{},null),this.arrow_.appendChild(document.createTextNode(a.RTL?Blockly.FieldDropdown.ARROW_CHAR+" ":" "+Blockly.FieldDropdown.ARROW_CHAR)),Blockly.FieldDropdown.superClass_.init.call(this,a),a=this.text_,this.text_=null,this.setText(a))};
 Blockly.FieldDropdown.prototype.showEditor_=function(){Blockly.WidgetDiv.show(this,this.sourceBlock_.RTL,null);for(var a=this,b=new goog.ui.Menu,c=this.getOptions_(),d=0;d<c.length;d++){var e=c[d][1],f=new goog.ui.MenuItem(c[d][0]);f.setValue(e);f.setCheckable(!0);b.addChild(f,!0);f.setChecked(e==this.value_)}goog.events.listen(b,goog.ui.Component.EventType.ACTION,function(b){if(b=b.target){b=b.getValue();if(a.sourceBlock_&&a.changeHandler_){var c=a.changeHandler_(b);void 0!==c&&(b=c)}null!==b&&a.setValue(b)}Blockly.WidgetDiv.hideIfOwner(a)});
 b.getHandler().listen(b.getElement(),goog.events.EventType.TOUCHSTART,function(a){this.getOwnerControl(a.target).handleMouseDown(a)});b.getHandler().listen(b.getElement(),goog.events.EventType.TOUCHEND,function(a){this.getOwnerControl(a.target).performActionInternal(a)});c=goog.dom.getViewportSize();d=goog.style.getViewportPageOffset(document);e=this.getAbsoluteXY_();f=this.borderRect_.getBBox();b.render(Blockly.WidgetDiv.DIV);var g=b.getElement();Blockly.addClass_(g,"blocklyDropdownMenu");var h=
-goog.style.getSize(g);e.y=e.y+h.height+f.height>=c.height+d.y?e.y-h.height:e.y+f.height;this.sourceBlock_.RTL?(e.x+=f.width,e.x+=Blockly.FieldDropdown.CHECKMARK_OVERHANG,e.x<d.x+h.width&&(e.x=d.x+h.width)):(e.x-=Blockly.FieldDropdown.CHECKMARK_OVERHANG,e.x>c.width+d.x-h.width&&(e.x=c.width+d.x-h.width));Blockly.WidgetDiv.position(e.x,e.y,c,d,this.sourceBlock_.RTL);b.setAllowAutoFocus(!0);g.focus()};
+goog.style.getSize(g);h.height=g.scrollHeight;e.y=e.y+h.height+f.height>=c.height+d.y?e.y-h.height:e.y+f.height;this.sourceBlock_.RTL?(e.x+=f.width,e.x+=Blockly.FieldDropdown.CHECKMARK_OVERHANG,e.x<d.x+h.width&&(e.x=d.x+h.width)):(e.x-=Blockly.FieldDropdown.CHECKMARK_OVERHANG,e.x>c.width+d.x-h.width&&(e.x=c.width+d.x-h.width));Blockly.WidgetDiv.position(e.x,e.y,c,d,this.sourceBlock_.RTL);b.setAllowAutoFocus(!0);g.focus()};
 Blockly.FieldDropdown.prototype.trimOptions_=function(){this.suffixField=this.prefixField=null;var a=this.menuGenerator_;if(goog.isArray(a)&&!(2>a.length)){var b=a.map(function(a){return a[0]}),c=Blockly.shortestStringLength(b),d=Blockly.commonWordPrefix(b,c),e=Blockly.commonWordSuffix(b,c);if((d||e)&&!(c<=d+e)){d&&(this.prefixField=b[0].substring(0,d-1));e&&(this.suffixField=b[0].substr(1-e));b=[];for(c=0;c<a.length;c++){var f=a[c][0],g=a[c][1],f=f.substring(d,f.length-e);b[c]=[f,g]}this.menuGenerator_=
 b}}};Blockly.FieldDropdown.prototype.getOptions_=function(){return goog.isFunction(this.menuGenerator_)?this.menuGenerator_.call(this):this.menuGenerator_};Blockly.FieldDropdown.prototype.getValue=function(){return this.value_};Blockly.FieldDropdown.prototype.setValue=function(a){this.value_=a;for(var b=this.getOptions_(),c=0;c<b.length;c++)if(b[c][1]==a){this.setText(b[c][0]);return}this.setText(a)};
 Blockly.FieldDropdown.prototype.setText=function(a){this.sourceBlock_&&this.arrow_&&(this.arrow_.style.fill=Blockly.makeColour(this.sourceBlock_.getColour()));null!==a&&a!==this.text_&&(this.text_=a,this.updateTextNode_(),this.textElement_&&(this.sourceBlock_.RTL?this.textElement_.insertBefore(this.arrow_,this.textElement_.firstChild):this.textElement_.appendChild(this.arrow_)),this.sourceBlock_&&this.sourceBlock_.rendered&&(this.sourceBlock_.render(),this.sourceBlock_.bumpNeighbours_(),this.sourceBlock_.workspace.fireChangeEvent()))};
@@ -1320,16 +1320,16 @@ Blockly.Css.CONTENT=[".blocklySvg {","  background-color: #fff;","  outline: non
 "  vertical-align: middle;","  width: 16px;","}",".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;","}",""];
+"}",".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;","  overflow-y: auto;","  overflow-x: hidden;","  max-height: 100%;","  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.createDom=function(){Blockly.WidgetDiv.DIV||(Blockly.WidgetDiv.DIV=goog.dom.createDom("div","blocklyWidgetDiv"),document.body.appendChild(Blockly.WidgetDiv.DIV))};Blockly.WidgetDiv.show=function(a,b,c){Blockly.WidgetDiv.hide();Blockly.WidgetDiv.owner_=a;Blockly.WidgetDiv.dispose_=c;Blockly.WidgetDiv.DIV.style.direction=b?"rtl":"ltr";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,e){b<d.y&&(b=d.y);e?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"};
+Blockly.WidgetDiv.position=function(a,b,c,d,e){b<d.y&&(b=d.y);e?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";Blockly.WidgetDiv.DIV.style.height=c.height-b+"px"};
 // Copyright 2011 Google Inc.  Apache License 2.0
 Blockly.inject=function(a,b){goog.isString(a)&&(a=document.getElementById(a));if(!goog.dom.contains(document,a))throw"Error: container is not in current document.";var c=Blockly.parseOptions_(b||{}),d,e=function(){var b=Blockly.createDom_(a,c);d=Blockly.createMainWorkspace_(b,c);Blockly.init_(d);d.markFocused();Blockly.bindEvent_(b,"focus",d,d.markFocused)};if(c.enableRealtime){var f=document.getElementById("realtime");f&&(f.style.display="block");Blockly.Realtime.startRealtime(e,a,c.realtimeOptions)}else e();
 return d};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};