diff --git a/src/components/script/dom/htmloptgroupelement.rs b/src/components/script/dom/htmloptgroupelement.rs
index 8f3be20a4327..4eda6938610e 100644
--- a/src/components/script/dom/htmloptgroupelement.rs
+++ b/src/components/script/dom/htmloptgroupelement.rs
@@ -3,14 +3,17 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::Bindings::HTMLOptGroupElementBinding;
-use dom::bindings::codegen::InheritTypes::HTMLOptGroupElementDerived;
+use dom::bindings::codegen::Bindings::HTMLOptGroupElementBinding::HTMLOptGroupElementMethods;
+use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast, NodeCast};
+use dom::bindings::codegen::InheritTypes::{HTMLOptGroupElementDerived, HTMLOptionElementDerived};
 use dom::bindings::js::{JSRef, Temporary};
 use dom::bindings::utils::{Reflectable, Reflector};
 use dom::document::Document;
-use dom::element::HTMLOptGroupElementTypeId;
+use dom::element::{AttributeHandlers, Element, HTMLOptGroupElementTypeId};
 use dom::eventtarget::{EventTarget, NodeTargetTypeId};
 use dom::htmlelement::HTMLElement;
-use dom::node::{Node, ElementNodeTypeId};
+use dom::node::{DisabledStateHelpers, Node, NodeHelpers, ElementNodeTypeId};
+use dom::virtualmethods::VirtualMethods;
 use servo_util::str::DOMString;
 
 #[deriving(Encodable)]
@@ -37,6 +40,66 @@ impl HTMLOptGroupElement {
     }
 }
 
+impl<'a> HTMLOptGroupElementMethods for JSRef<'a, HTMLOptGroupElement> {
+    // http://www.whatwg.org/html#dom-optgroup-disabled
+    fn Disabled(&self) -> bool {
+        let elem: &JSRef<Element> = ElementCast::from_ref(self);
+        elem.has_attribute("disabled")
+    }
+
+    // http://www.whatwg.org/html#dom-optgroup-disabled
+    fn SetDisabled(&self, disabled: bool) {
+        let elem: &JSRef<Element> = ElementCast::from_ref(self);
+        elem.set_bool_attribute("disabled", disabled)
+    }
+}
+
+impl<'a> VirtualMethods for JSRef<'a, HTMLOptGroupElement> {
+    fn super_type<'a>(&'a self) -> Option<&'a VirtualMethods> {
+        let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_ref(self);
+        Some(htmlelement as &VirtualMethods)
+    }
+
+    fn after_set_attr(&self, name: DOMString, value: DOMString) {
+        match self.super_type() {
+            Some(ref s) => s.after_set_attr(name.clone(), value.clone()),
+            _ => (),
+        }
+
+        let node: &JSRef<Node> = NodeCast::from_ref(self);
+        match name.as_slice() {
+            "disabled" => {
+                node.set_disabled_state(true);
+                node.set_enabled_state(false);
+                for child in node.children().filter(|child| child.is_htmloptionelement()) {
+                    child.set_disabled_state(true);
+                    child.set_enabled_state(false);
+                }
+            },
+            _ => ()
+        }
+    }
+
+    fn before_remove_attr(&self, name: DOMString, value: DOMString) {
+        match self.super_type() {
+            Some(ref s) => s.before_remove_attr(name.clone(), value),
+            _ => (),
+        }
+
+        let node: &JSRef<Node> = NodeCast::from_ref(self);
+        match name.as_slice() {
+            "disabled" => {
+                node.set_disabled_state(false);
+                node.set_enabled_state(true);
+                for child in node.children().filter(|child| child.is_htmloptionelement()) {
+                    child.check_disabled_attribute();
+                }
+            },
+            _ => ()
+        }
+    }
+}
+
 impl Reflectable for HTMLOptGroupElement {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         self.htmlelement.reflector()
diff --git a/src/components/script/dom/virtualmethods.rs b/src/components/script/dom/virtualmethods.rs
index 80440f68af05..d58b2aa3ba2d 100644
--- a/src/components/script/dom/virtualmethods.rs
+++ b/src/components/script/dom/virtualmethods.rs
@@ -14,6 +14,7 @@ use dom::bindings::codegen::InheritTypes::HTMLIFrameElementCast;
 use dom::bindings::codegen::InheritTypes::HTMLImageElementCast;
 use dom::bindings::codegen::InheritTypes::HTMLInputElementCast;
 use dom::bindings::codegen::InheritTypes::HTMLObjectElementCast;
+use dom::bindings::codegen::InheritTypes::HTMLOptGroupElementCast;
 use dom::bindings::codegen::InheritTypes::HTMLStyleElementCast;
 use dom::bindings::js::JSRef;
 use dom::element::Element;
@@ -27,6 +28,7 @@ use dom::element::HTMLIFrameElementTypeId;
 use dom::element::HTMLImageElementTypeId;
 use dom::element::HTMLInputElementTypeId;
 use dom::element::HTMLObjectElementTypeId;
+use dom::element::HTMLOptGroupElementTypeId;
 use dom::element::HTMLStyleElementTypeId;
 use dom::event::Event;
 use dom::htmlanchorelement::HTMLAnchorElement;
@@ -39,6 +41,7 @@ use dom::htmliframeelement::HTMLIFrameElement;
 use dom::htmlimageelement::HTMLImageElement;
 use dom::htmlinputelement::HTMLInputElement;
 use dom::htmlobjectelement::HTMLObjectElement;
+use dom::htmloptgroupelement::HTMLOptGroupElement;
 use dom::htmlstyleelement::HTMLStyleElement;
 use dom::node::{Node, NodeHelpers, ElementNodeTypeId};
 use servo_util::str::DOMString;
@@ -156,6 +159,10 @@ pub fn vtable_for<'a>(node: &'a JSRef<Node>) -> &'a VirtualMethods {
             let element: &JSRef<HTMLObjectElement> = HTMLObjectElementCast::to_ref(node).unwrap();
             element as &VirtualMethods
         }
+        ElementNodeTypeId(HTMLOptGroupElementTypeId) => {
+            let element: &JSRef<HTMLOptGroupElement> = HTMLOptGroupElementCast::to_ref(node).unwrap();
+            element as &VirtualMethods
+        }
         ElementNodeTypeId(HTMLStyleElementTypeId) => {
             let element: &JSRef<HTMLStyleElement> = HTMLStyleElementCast::to_ref(node).unwrap();
             element as &VirtualMethods
diff --git a/src/components/script/dom/webidls/HTMLOptGroupElement.webidl b/src/components/script/dom/webidls/HTMLOptGroupElement.webidl
index e5831d1df78b..13646f00ab1c 100644
--- a/src/components/script/dom/webidls/HTMLOptGroupElement.webidl
+++ b/src/components/script/dom/webidls/HTMLOptGroupElement.webidl
@@ -5,6 +5,6 @@
 
 // http://www.whatwg.org/html/#htmloptgroupelement
 interface HTMLOptGroupElement : HTMLElement {
-  //         attribute boolean disabled;
+           attribute boolean disabled;
   //         attribute DOMString label;
 };