Address review comments.

83 files changed, 316 insertions, 374 deletions

diff --git a/src/components/script/dom/bindings/codegen/Bindings.conf b/src/components/script/dom/bindings/codegen/Bindings.conf
index f3723fb7c9b..c41856ccf86 100644
--- a/src/components/script/dom/bindings/codegen/Bindings.conf
+++ b/src/components/script/dom/bindings/codegen/Bindings.conf
@@ -58,9 +58,7 @@ DOMInterfaces = {
 
 # FIXME: This should be renamed: https://github.com/mozilla/servo/issues/1625
 def addHTMLElement(element):
-  DOMInterfaces[element] = {
-    'nativeType': 'JS<%s>' % element,
-  }
+  DOMInterfaces[element] = {}
 
 addHTMLElement('Comment')
 addHTMLElement('DocumentFragment')
diff --git a/src/components/script/dom/bindings/codegen/CodegenRust.py b/src/components/script/dom/bindings/codegen/CodegenRust.py
index 8c9eb5d6f8b..55bfa9eac91 100644
--- a/src/components/script/dom/bindings/codegen/CodegenRust.py
+++ b/src/components/script/dom/bindings/codegen/CodegenRust.py
@@ -281,7 +281,6 @@ class CGMethodCall(CGThing):
                                                         isDefinitelyObject=True),
                         {
                             "declName" : "arg%d" % distinguishingIndex,
-                            "simpleDeclName" : "arg%d" % distinguishingIndex,
                             "holderName" : ("arg%d" % distinguishingIndex) + "_holder",
                             "val" : distinguishingArg
                             })
@@ -395,6 +394,9 @@ def typeIsSequenceOrHasSequenceMember(type):
                    type.flatMemberTypes)
     return False
 
+def typeNeedsRooting(type, descriptorProvider):
+    return type.isGeckoInterface() and descriptorProvider.getDescriptor(type.name).needsRooting
+
 def getJSToNativeConversionTemplate(type, descriptorProvider, failureCode=None,
                                     isDefinitelyObject=False,
                                     isMember=False,
@@ -482,6 +484,8 @@ def getJSToNativeConversionTemplate(type, descriptorProvider, failureCode=None,
     if exceptionCode is None:
         exceptionCode = "return 0;"
 
+    needsRooting = typeNeedsRooting(type, descriptorProvider)
+
     def handleOptional(template, declType, isOptional):
         if isOptional:
             template = "Some(%s)" % template
@@ -490,7 +494,7 @@ def getJSToNativeConversionTemplate(type, descriptorProvider, failureCode=None,
         else:
             initialValue = None
 
-        return (template, declType, isOptional, initialValue)
+        return (template, declType, isOptional, initialValue, needsRooting)
 
     # Unfortunately, .capitalize() on a string will lowercase things inside the
     # string, which we do not want.
@@ -751,7 +755,7 @@ def getJSToNativeConversionTemplate(type, descriptorProvider, failureCode=None,
             "} else {\n"
             "  ${declName} = NULL;\n"
             "}" % haveCallable,
-            CGGeneric("JSObject*"), isOptional, None)
+            CGGeneric("JSObject*"), isOptional, None, needsRooting)
 
     if type.isAny():
         assert not isEnforceRange and not isClamp
@@ -795,7 +799,7 @@ def getJSToNativeConversionTemplate(type, descriptorProvider, failureCode=None,
         assert not isOptional
         # This one only happens for return values, and its easy: Just
         # ignore the jsval.
-        return ("", None, False, None)
+        return ("", None, False, None, False)
 
     if not type.isPrimitive():
         raise TypeError("Need conversion for argument type '%s'" % str(type))
@@ -848,7 +852,7 @@ def instantiateJSToNativeConversionTemplate(templateTuple, replacements,
     replace ${argc} and ${index}, where ${index} is the index of this
     argument (0-based) and ${argc} is the total number of arguments.
     """
-    (templateBody, declType, dealWithOptional, initialValue) = templateTuple
+    (templateBody, declType, dealWithOptional, initialValue, needsRooting) = templateTuple
 
     if dealWithOptional and argcAndIndex is None:
         raise TypeError("Have to deal with optional things, but don't know how")
@@ -895,9 +899,8 @@ def instantiateJSToNativeConversionTemplate(templateTuple, replacements,
     # conversion.
     result.append(CGGeneric(""))
 
-    type = declType.define() if declType else None
-    if type and 'JS<' in type:
-        rootBody = "let ${simpleDeclName} = ${declName}.root();"
+    if needsRooting:
+        rootBody = "let ${declName} = ${declName}.root();"
         result.append(CGGeneric(string.Template(rootBody).substitute(replacements)))
         result.append(CGGeneric(""))
 
@@ -942,7 +945,6 @@ class CGArgumentConverter(CGThing):
             }
         self.replacementVariables = {
             "declName" : "arg%d" % index,
-            "simpleDeclName" : "arg%d" % index,
             "holderName" : ("arg%d" % index) + "_holder"
             }
         self.replacementVariables["val"] = string.Template(
@@ -1808,7 +1810,7 @@ def CreateBindingJSObject(descriptor, parent=None):
     if descriptor.proxy:
         assert not descriptor.createGlobal
         handler = """
-  let js_info = aScope.get().page().js_info();
+  let js_info = aScope.deref().page().js_info();
   let handler = js_info.get_ref().dom_static.proxy_handlers.deref().get(&(PrototypeList::id::%s as uint));
 """ % descriptor.name
         create += handler + """  let obj = NewProxyObject(aCx, *handler,
@@ -2480,13 +2482,9 @@ class CGSpecializedMethod(CGAbstractExternMethod):
 
     def definition_body(self):
         name = self.method.identifier.name
-        nativeName = MakeNativeName(name)
-        extraPre = ''
-        argsPre = []
-        return CGWrapper(CGMethodCall(argsPre, nativeName, self.method.isStatic(),
+        return CGWrapper(CGMethodCall([], MakeNativeName(name), self.method.isStatic(),
                                       self.descriptor, self.method),
-                         pre=extraPre +
-                             "  let this = JS::from_raw(this);\n" +
+                         pre="  let this = JS::from_raw(this);\n" +
                              "  let mut this = this.root();\n").define()
 
 class CGGenericGetter(CGAbstractBindingMethod):
@@ -2530,17 +2528,14 @@ class CGSpecializedGetter(CGAbstractExternMethod):
     def definition_body(self):
         name = self.attr.identifier.name
         nativeName = MakeNativeName(name)
-        extraPre = ''
-        argsPre = []
         infallible = ('infallible' in
                       self.descriptor.getExtendedAttributes(self.attr,
                                                             getter=True))
         if self.attr.type.nullable() or not infallible:
             nativeName = "Get" + nativeName
-        return CGWrapper(CGIndenter(CGGetterCall(argsPre, self.attr.type, nativeName,
+        return CGWrapper(CGIndenter(CGGetterCall([], self.attr.type, nativeName,
                                                  self.descriptor, self.attr)),
-                         pre=extraPre +
-                             "  let this = JS::from_raw(this);\n" +
+                         pre="  let this = JS::from_raw(this);\n" +
                              "  let mut this = this.root();\n").define()
 
 class CGGenericSetter(CGAbstractBindingMethod):
@@ -2588,13 +2583,10 @@ class CGSpecializedSetter(CGAbstractExternMethod):
 
     def definition_body(self):
         name = self.attr.identifier.name
-        nativeName = "Set" + MakeNativeName(name)
-        argsPre = []
-        extraPre = ''
-        return CGWrapper(CGIndenter(CGSetterCall(argsPre, self.attr.type, nativeName,
+        return CGWrapper(CGIndenter(CGSetterCall([], self.attr.type,
+                                                 "Set" + MakeNativeName(name),
                                                  self.descriptor, self.attr)),
-                         pre=extraPre +
-                             "  let this = JS::from_raw(this);\n" +
+                         pre="  let this = JS::from_raw(this);\n" +
                              "  let mut this = this.root();\n").define()
 
 
@@ -2763,7 +2755,7 @@ def getUnionTypeTemplateVars(type, descriptorProvider):
         name = type.name
         typeName = "/*" + type.name + "*/"
 
-    (template, _, _, _) = getJSToNativeConversionTemplate(
+    (template, _, _, _, _) = getJSToNativeConversionTemplate(
         type, descriptorProvider, failureCode="return Ok(None);",
         exceptionCode='return Err(());',
         isDefinitelyObject=True, isOptional=False)
@@ -3421,7 +3413,6 @@ class CGProxySpecialOperation(CGPerSignatureCall):
                                                        treatNullAs=argument.treatNullAs)
             templateValues = {
                 "declName": argument.identifier.name,
-                "simpleDeclName": argument.identifier.name,
                 "holderName": argument.identifier.name + "_holder",
                 "val": "(*desc).value",
                 "valPtr": "&(*desc).value"
@@ -3868,9 +3859,8 @@ class CGClassConstructHook(CGAbstractExternMethod):
 
     def generate_code(self):
         preamble = """
-  let global = global_object_for_js_object(JS_CALLEE(cx, &*vp).to_object());
-  let global = global.root();
-  let obj = global.reflector().get_jsobject();
+  let global = global_object_for_js_object(JS_CALLEE(cx, &*vp).to_object()).root();
+  let obj = global.deref().reflector().get_jsobject();
 """
         nativeName = MakeNativeName(self._ctor.identifier.name)
         callGenerator = CGMethodCall(["&global.root_ref()"], nativeName, True,
@@ -4148,14 +4138,14 @@ class CGDictionary(CGThing):
 
     def getMemberType(self, memberInfo):
         (member, (templateBody, declType,
-                  dealWithOptional, initialValue)) = memberInfo
+                  dealWithOptional, initialValue, _)) = memberInfo
         if dealWithOptional:
             declType = CGWrapper(declType, pre="Optional< ", post=" >")
         return declType.define()
 
     def getMemberConversion(self, memberInfo):
         (member, (templateBody, declType,
-                  dealWithOptional, initialValue)) = memberInfo
+                  dealWithOptional, initialValue, _)) = memberInfo
         replacements = { "val": "value.unwrap()" }
         if member.defaultValue:
             replacements["haveValue"] = "value.is_some()"
@@ -4310,7 +4300,9 @@ class CGBindingRoot(CGThing):
             'js::glue::{RUST_JS_NumberValue, RUST_JSID_IS_STRING}',
             'dom::types::*',
             'dom::bindings',
-            'dom::bindings::js::{JS, JSRef, Root, RootedReference, Temporary, OptionalRootable, OptionalRootedRootable, ResultRootable}',
+            'dom::bindings::js::{JS, JSRef, Root, RootedReference, Temporary}',
+            'dom::bindings::js::{OptionalRootable, OptionalRootedRootable, ResultRootable}',
+            'dom::bindings::js::{OptionalRootedReference, OptionalOptionalRootedRootable}',
             'dom::bindings::utils::{CreateDOMGlobal, CreateInterfaceObjects2}',
             'dom::bindings::utils::{ConstantSpec, cx_for_dom_object, Default}',
             'dom::bindings::utils::{dom_object_slot, DOM_OBJECT_SLOT, DOMClass}',
@@ -5311,7 +5303,7 @@ class GlobalGenRoots():
             cast = [CGGeneric(string.Template('''pub trait ${castTraitName} {
   #[inline(always)]
   fn to_ref<'a, 'b, T: ${toBound}+Reflectable>(base: &'a JSRef<'b, T>) -> Option<&'a JSRef<'b, Self>> {
-    match base.get().${checkFn}() {
+    match base.deref().${checkFn}() {
         true => unsafe { Some(base.transmute()) },
         false => None
     }
@@ -5319,7 +5311,7 @@ class GlobalGenRoots():
 
   #[inline(always)]
   fn to_mut_ref<'a, 'b, T: ${toBound}+Reflectable>(base: &'a mut JSRef<'b, T>) -> Option<&'a mut JSRef<'b, Self>> {
-    match base.get().${checkFn}() {
+    match base.deref().${checkFn}() {
         true => unsafe { Some(base.transmute_mut()) },
         false => None
     }
diff --git a/src/components/script/dom/bindings/codegen/Configuration.py b/src/components/script/dom/bindings/codegen/Configuration.py
index dc4daa18b26..1272867f542 100644
--- a/src/components/script/dom/bindings/codegen/Configuration.py
+++ b/src/components/script/dom/bindings/codegen/Configuration.py
@@ -128,15 +128,18 @@ class Descriptor(DescriptorProvider):
 
         # Read the desc, and fill in the relevant defaults.
         ifaceName = self.interface.identifier.name
+
+        # Callback types do not use JS smart pointers, so we should not use the
+        # built-in rooting mechanisms for them.
         if self.interface.isCallback():
-            nativeTypeDefault = "nsIDOM" + ifaceName
+            self.needsRooting = False
         else:
-            nativeTypeDefault = 'JS<%s>' % ifaceName
+            self.needsRooting = True
 
         self.returnType = "Temporary<%s>" % ifaceName
         self.argumentType = "JSRef<%s>" % ifaceName
         self.memberType = "Root<'a, 'b, %s>" % ifaceName
-        self.nativeType = desc.get('nativeType', nativeTypeDefault)
+        self.nativeType = desc.get('nativeType', 'JS<%s>' % ifaceName)
         self.concreteType = desc.get('concreteType', ifaceName)
         self.createGlobal = desc.get('createGlobal', False)
         self.register = desc.get('register', True)
diff --git a/src/components/script/dom/bindings/js.rs b/src/components/script/dom/bindings/js.rs
index eee20a17e83..da84c85eeb7 100644
--- a/src/components/script/dom/bindings/js.rs
+++ b/src/components/script/dom/bindings/js.rs
@@ -40,8 +40,8 @@
 /// - RootedReference: makes obtaining an Option<JSRef<T>> from an Option<Root<T>> easy
 
 use dom::bindings::utils::{Reflector, Reflectable, cx_for_dom_object};
-use dom::window::Window;
-use js::jsapi::{JSObject, JSContext, JS_AddObjectRoot, JS_RemoveObjectRoot};
+use dom::node::Node;
+use js::jsapi::{JSObject, JS_AddObjectRoot, JS_RemoveObjectRoot};
 use layout_interface::TrustedNodeAddress;
 use script_task::StackRoots;
 
@@ -90,7 +90,7 @@ impl<T: Reflectable> Temporary<T> {
         Temporary::new(root.unrooted())
     }
 
-    /// Root this unrooted value.
+    /// Create a stack-bounded root for this value.
     pub fn root<'a, 'b>(self) -> Root<'a, 'b, T> {
         local_data::get(StackRoots, |opt| {
             let collection = opt.unwrap();
@@ -130,15 +130,17 @@ impl <T> Clone for JS<T> {
     }
 }
 
-impl<T: Reflectable> JS<T> {
-    /// Create a new JS-reflected DOM object; returns an Temporary type because the new value
-    /// is not safe to use until it is rooted.
-    pub fn new(obj: ~T,
-               window:  &JSRef<Window>,
-               wrap_fn: extern "Rust" fn(*JSContext, &JSRef<Window>, ~T) -> JS<T>) -> Temporary<T> {
-        Temporary::new(wrap_fn(window.get().get_cx(), window, obj))
+impl JS<Node> {
+    /// Create a new JS-owned value wrapped from an address known to be a Node pointer.
+    pub unsafe fn from_trusted_node_address(inner: TrustedNodeAddress) -> JS<Node> {
+        let TrustedNodeAddress(addr) = inner;
+        JS {
+            ptr: RefCell::new(addr as *mut Node)
+        }
     }
+}
 
+impl<T: Reflectable> JS<T> {
     /// Create a new JS-owned value wrapped from a raw Rust pointer.
     pub unsafe fn from_raw(raw: *mut T) -> JS<T> {
         JS {
@@ -147,14 +149,6 @@ impl<T: Reflectable> JS<T> {
     }
 
 
-    /// Create a new JS-owned value wrapped from an address known to be a Node pointer.
-    pub unsafe fn from_trusted_node_address(inner: TrustedNodeAddress) -> JS<T> {
-        let TrustedNodeAddress(addr) = inner;
-        JS {
-            ptr: RefCell::new(addr as *mut T)
-        }
-    }
-
     /// Root this JS-owned value to prevent its collection as garbage.
     pub fn root<'a, 'b>(&self) -> Root<'a, 'b, T> {
         local_data::get(StackRoots, |opt| {
@@ -209,6 +203,8 @@ impl<From, To> JS<From> {
     }
 }
 
+
+/// Get an Option<JSRef<T>> out of an Option<Root<T>>
 pub trait RootedReference<T> {
     fn root_ref<'a>(&'a self) -> Option<JSRef<'a, T>>;
 }
@@ -219,6 +215,17 @@ impl<'a, 'b, T: Reflectable> RootedReference<T> for Option<Root<'a, 'b, T>> {
     }
 }
 
+/// Get an Option<Option<JSRef<T>>> out of an Option<Option<Root<T>>>
+pub trait OptionalRootedReference<T> {
+    fn root_ref<'a>(&'a self) -> Option<Option<JSRef<'a, T>>>;
+}
+
+impl<'a, 'b, T: Reflectable> OptionalRootedReference<T> for Option<Option<Root<'a, 'b, T>>> {
+    fn root_ref<'a>(&'a self) -> Option<Option<JSRef<'a, T>>> {
+        self.as_ref().map(|inner| inner.root_ref())
+    }
+}
+
 /// Trait that allows extracting a JS<T> value from a variety of rooting-related containers,
 /// which in general is an unsafe operation since they can outlive the rooted lifetime of the
 /// original value.
@@ -244,6 +251,8 @@ impl<T: Reflectable> Assignable<T> for Temporary<T> {
     }
 }
 
+/// Assign an optional rootable value (either of JS<T> or Temporary<T>) to an optional
+/// field of a DOM type (ie. Option<JS<T>>)
 pub trait OptionalSettable<T> {
     fn assign(&mut self, val: Option<T>);
 }
@@ -254,6 +263,7 @@ impl<T: Assignable<U>, U: Reflectable> OptionalSettable<T> for Option<JS<U>> {
     }
 }
 
+/// Root a rootable Option type (used for Option<Temporary<T>>)
 pub trait OptionalRootable<T> {
     fn root<'a, 'b>(self) -> Option<Root<'a, 'b, T>>;
 }
@@ -264,6 +274,18 @@ impl<T: Reflectable> OptionalRootable<T> for Option<Temporary<T>> {
     }
 }
 
+/// Return an unrooted type for storing in optional DOM fields
+pub trait OptionalUnrootable<T> {
+    fn unrooted(&self) -> Option<JS<T>>;
+}
+
+impl<'a, T: Reflectable> OptionalUnrootable<T> for Option<JSRef<'a, T>> {
+    fn unrooted(&self) -> Option<JS<T>> {
+        self.as_ref().map(|inner| inner.unrooted())
+    }
+}
+
+/// Root a rootable Option type (used for Option<JS<T>>)
 pub trait OptionalRootedRootable<T> {
     fn root<'a, 'b>(&self) -> Option<Root<'a, 'b, T>>;
 }
@@ -274,6 +296,19 @@ impl<T: Reflectable> OptionalRootedRootable<T> for Option<JS<T>> {
     }
 }
 
+/// Root a rootable Option<Option> type (used for Option<Option<JS<T>>>)
+pub trait OptionalOptionalRootedRootable<T> {
+    fn root<'a, 'b>(&self) -> Option<Option<Root<'a, 'b, T>>>;
+}
+
+impl<T: Reflectable> OptionalOptionalRootedRootable<T> for Option<Option<JS<T>>> {
+    fn root<'a, 'b>(&self) -> Option<Option<Root<'a, 'b, T>>> {
+        self.as_ref().map(|inner| inner.root())
+    }
+}
+
+
+/// Root a rootable Result type (any of Temporary<T> or JS<T>)
 pub trait ResultRootable<T,U> {
     fn root<'a, 'b>(self) -> Result<Root<'a, 'b, T>, U>;
 }
@@ -310,26 +345,30 @@ impl<T: Assignable<U>, U: Reflectable> TemporaryPushable<T> for Vec<JS<U>> {
 
 /// An opaque, LIFO rooting mechanism.
 pub struct RootCollection {
-    roots: RefCell<~[*JSObject]>,
+    roots: RefCell<Vec<*JSObject>>,
 }
 
 impl RootCollection {
+    /// Create an empty collection of roots
     pub fn new() -> RootCollection {
         RootCollection {
-            roots: RefCell::new(~[]),
+            roots: RefCell::new(vec!()),
         }
     }
 
+    /// Create a new stack-bounded root that will not outlive this collection
     fn new_root<'a, 'b, T: Reflectable>(&'a self, unrooted: &JS<T>) -> Root<'a, 'b, T> {
         Root::new(self, unrooted)
     }
 
+    /// Track a stack-based root to ensure LIFO root ordering
     fn root<'a, 'b, T: Reflectable>(&self, untracked: &Root<'a, 'b, T>) {
         let mut roots = self.roots.borrow_mut();
         roots.push(untracked.js_ptr);
         debug!("  rooting {:?}", untracked.js_ptr);
     }
 
+    /// Stop tracking a stack-based root, asserting if LIFO root ordering has been violated
     fn unroot<'a, 'b, T: Reflectable>(&self, rooted: &Root<'a, 'b, T>) {
         let mut roots = self.roots.borrow_mut();
         debug!("unrooting {:?} (expecting {:?}", roots.last().unwrap(), rooted.js_ptr);
@@ -355,6 +394,9 @@ pub struct Root<'a, 'b, T> {
 }
 
 impl<'a, 'b, T: Reflectable> Root<'a, 'b, T> {
+    /// Create a new stack-bounded root for the provided JS-owned value.
+    /// It cannot not outlive its associated RootCollection, and it contains a JSRef
+    /// which cannot outlive this new Root.
     fn new(roots: &'a RootCollection, unrooted: &JS<T>) -> Root<'a, 'b, T> {
         let root = Root {
             root_list: roots,
@@ -369,20 +411,8 @@ impl<'a, 'b, T: Reflectable> Root<'a, 'b, T> {
         root
     }
 
-    pub fn get<'a>(&'a self) -> &'a T {
-        unsafe {
-            let borrow = self.ptr.borrow();
-            &**borrow
-        }
-    }
-
-    pub fn get_mut<'a>(&'a mut self) -> &'a mut T {
-       unsafe {
-            let mut borrow = self.ptr.borrow_mut();
-            &mut **borrow
-        }
-    }
-
+    /// Obtain a safe reference to the wrapped JS owned-value that cannot outlive
+    /// the lifetime of this root.
     pub fn root_ref<'b>(&'b self) -> JSRef<'b,T> {
         self.jsref.clone()
     }
@@ -395,37 +425,33 @@ impl<'a, 'b, T: Reflectable> Drop for Root<'a, 'b, T> {
     }
 }
 
-impl<'a, 'b, T: Reflectable> Reflectable for Root<'a, 'b, T> {
-    fn reflector<'a>(&'a self) -> &'a Reflector {
-        self.get().reflector()
-    }
-
-    fn mut_reflector<'a>(&'a mut self) -> &'a mut Reflector {
-        self.get_mut().mut_reflector()
-    }
-}
-
 impl<'a, 'b, T: Reflectable> Deref<JSRef<'b, T>> for Root<'a, 'b, T> {
     fn deref<'c>(&'c self) -> &'c JSRef<'b, T> {
-        &'a self.jsref
+        &self.jsref
     }
 }
 
 impl<'a, 'b, T: Reflectable> DerefMut<JSRef<'b, T>> for Root<'a, 'b, T> {
     fn deref_mut<'c>(&'c mut self) -> &'c mut JSRef<'b, T> {
-        &'a mut self.jsref
+        &mut self.jsref
     }
 }
 
 impl<'a, T: Reflectable> Deref<T> for JSRef<'a, T> {
     fn deref<'b>(&'b self) -> &'b T {
-        self.get()
+        let borrow = self.ptr.borrow();
+        unsafe {
+            &**borrow
+        }
     }
 }
 
 impl<'a, T: Reflectable> DerefMut<T> for JSRef<'a, T> {
     fn deref_mut<'b>(&'b mut self) -> &'b mut T {
-        self.get_mut()
+        let mut borrowed = self.ptr.borrow_mut();
+        unsafe {
+            &mut **borrowed
+        }
     }
 }
 
@@ -451,20 +477,6 @@ impl<'a, T> Eq for JSRef<'a, T> {
 }
 
 impl<'a,T> JSRef<'a,T> {
-    pub fn get<'a>(&'a self) -> &'a T {
-        unsafe {
-            let borrow = self.ptr.borrow();
-            &**borrow
-        }
-    }
-
-    pub fn get_mut<'a>(&'a mut self) -> &'a mut T {
-        let mut borrowed = self.ptr.borrow_mut();
-        unsafe {
-            &mut **borrowed
-        }
-    }
-
     //XXXjdm It would be lovely if this could be private.
     pub unsafe fn transmute<'b, To>(&'b self) -> &'b JSRef<'a, To> {
         cast::transmute(self)
@@ -484,10 +496,10 @@ impl<'a,T> JSRef<'a,T> {
 
 impl<'a, T: Reflectable> Reflectable for JSRef<'a, T> {
     fn reflector<'a>(&'a self) -> &'a Reflector {
-        self.get().reflector()
+        self.deref().reflector()
     }
 
     fn mut_reflector<'a>(&'a mut self) -> &'a mut Reflector {
-        self.get_mut().mut_reflector()
+        self.deref_mut().mut_reflector()
     }
 }
diff --git a/src/components/script/dom/bindings/utils.rs b/src/components/script/dom/bindings/utils.rs
index 28f75073da2..a99189ae161 100644
--- a/src/components/script/dom/bindings/utils.rs
+++ b/src/components/script/dom/bindings/utils.rs
@@ -392,7 +392,7 @@ pub fn reflect_dom_object<T: Reflectable>
          window:  &JSRef<window::Window>,
          wrap_fn: extern "Rust" fn(*JSContext, &JSRef<window::Window>, ~T) -> JS<T>)
          -> Temporary<T> {
-    JS::new(obj, window, wrap_fn)
+    Temporary::new(wrap_fn(window.deref().get_cx(), window, obj))
 }
 
 #[deriving(Eq)]
@@ -415,8 +415,8 @@ impl Reflector {
     /// Return a pointer to the memory location at which the JS reflector object is stored.
     /// Used by Temporary values to root the reflector, as required by the JSAPI rooting
     /// APIs.
-    pub fn rootable(&self) -> **JSObject {
-        &self.object as **JSObject
+    pub fn rootable<'a>(&'a self) -> &'a *JSObject {
+        &self.object
     }
 
     pub fn new() -> Reflector {
@@ -634,7 +634,7 @@ pub fn global_object_for_js_object(obj: *JSObject) -> JS<window::Window> {
 
 fn cx_for_dom_reflector(obj: *JSObject) -> *JSContext {
     let win = global_object_for_js_object(obj).root();
-    let js_info = win.get().page().js_info();
+    let js_info = win.deref().page().js_info();
     match *js_info {
         Some(ref info) => info.js_context.deref().deref().ptr,
         None => fail!("no JS context for DOM global")
diff --git a/src/components/script/dom/browsercontext.rs b/src/components/script/dom/browsercontext.rs
index fea7dc9a8a7..fb282a2c945 100644
--- a/src/components/script/dom/browsercontext.rs
+++ b/src/components/script/dom/browsercontext.rs
@@ -48,13 +48,13 @@ impl BrowserContext {
 
     pub fn create_window_proxy(&self) -> *JSObject {
         let win = self.active_window().root();
-        let page = win.get().page();
+        let page = win.deref().page();
         let js_info = page.js_info();
 
         let handler = js_info.get_ref().dom_static.windowproxy_handler;
         assert!(handler.deref().is_not_null());
 
-        let parent = win.get().reflector().get_jsobject();
+        let parent = win.deref().reflector().get_jsobject();
         let cx = js_info.get_ref().js_context.deref().deref().ptr;
         let wrapper = unsafe {
             WrapperNew(cx, parent, *handler.deref())
diff --git a/src/components/script/dom/document.rs b/src/components/script/dom/document.rs
index d858f470fee..d911611eba3 100644
--- a/src/components/script/dom/document.rs
+++ b/src/components/script/dom/document.rs
@@ -182,7 +182,7 @@ impl<'a> DocumentHelpers for JSRef<'a, Document> {
 }
 
 impl Document {
-        pub fn reflect_document(document: ~Document,
+    pub fn reflect_document(document: ~Document,
                             window: &JSRef<Window>,
                             wrap_fn: extern "Rust" fn(*JSContext, &JSRef<Window>, ~Document) -> JS<Document>)
              -> Temporary<Document> {
@@ -256,20 +256,22 @@ impl<'a> PrivateDocumentHelpers for JSRef<'a, Document> {
     fn createNodeList(&self, callback: |node: &JSRef<Node>| -> bool) -> Temporary<NodeList> {
         let window = self.window.root();
 
-        let mut nodes = vec!();
         match self.GetDocumentElement().root() {
-            None => {},
+            None => {
+                NodeList::new_simple_list(&*window, vec!())
+            },
             Some(root) => {
+                let mut nodes = vec!();
                 let root: &JSRef<Node> = NodeCast::from_ref(&*root);
                 for child in root.traverse_preorder() {
                     if callback(&child) {
                         nodes.push(child);
                     }
                 }
+                NodeList::new_simple_list(&*window, nodes)
             }
         }
 
-        NodeList::new_simple_list(&*window, nodes)
     }
 
     fn get_html_element(&self) -> Option<Temporary<HTMLHtmlElement>> {
@@ -551,7 +553,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
                     for child in title_elem.children() {
                         if child.is_text() {
                             let text: &JSRef<Text> = TextCast::to_ref(&child).unwrap();
-                            title.push_str(text.get().characterdata.data.as_slice());
+                            title.push_str(text.deref().characterdata.data.as_slice());
                         }
                     }
                 });
@@ -563,15 +565,14 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
 
     // http://www.whatwg.org/specs/web-apps/current-work/#document.title
     fn SetTitle(&self, title: DOMString) -> ErrorResult {
-
         self.GetDocumentElement().root().map(|root| {
             let root: &JSRef<Node> = NodeCast::from_ref(&*root);
             let mut head_node = root.traverse_preorder().find(|child| {
-                child.get().type_id == ElementNodeTypeId(HTMLHeadElementTypeId)
+                child.type_id() == ElementNodeTypeId(HTMLHeadElementTypeId)
             });
             head_node.as_mut().map(|head| {
                 let mut title_node = head.children().find(|child| {
-                    child.get().type_id == ElementNodeTypeId(HTMLTitleElementTypeId)
+                    child.type_id() == ElementNodeTypeId(HTMLTitleElementTypeId)
                 });
 
                 match title_node {
@@ -630,7 +631,6 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
 
     // http://www.whatwg.org/specs/web-apps/current-work/#dom-document-body
     fn SetBody(&self, new_body: Option<JSRef<HTMLElement>>) -> ErrorResult {
-
         // Step 1.
         match new_body {
             Some(ref htmlelem) => {
@@ -674,7 +674,6 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
 
     // http://www.whatwg.org/specs/web-apps/current-work/#dom-document-getelementsbyname
     fn GetElementsByName(&self, name: DOMString) -> Temporary<NodeList> {
-
         self.createNodeList(|node| {
             if !node.is_element() {
                 return false;
@@ -694,7 +693,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         struct ImagesFilter;
         impl CollectionFilter for ImagesFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().local_name == ~"img"
+                elem.deref().local_name == ~"img"
             }
         }
         let filter = ~ImagesFilter;
@@ -708,7 +707,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         struct EmbedsFilter;
         impl CollectionFilter for EmbedsFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().local_name == ~"embed"
+                elem.deref().local_name == ~"embed"
             }
         }
         let filter = ~EmbedsFilter;
@@ -727,7 +726,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         struct LinksFilter;
         impl CollectionFilter for LinksFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                (elem.get().local_name == ~"a" || elem.get().local_name == ~"area") &&
+                (elem.deref().local_name == ~"a" || elem.deref().local_name == ~"area") &&
                 elem.get_attribute(Null, "href").is_some()
             }
         }
@@ -742,7 +741,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         struct FormsFilter;
         impl CollectionFilter for FormsFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().local_name == ~"form"
+                elem.deref().local_name == ~"form"
             }
         }
         let filter = ~FormsFilter;
@@ -756,7 +755,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         struct ScriptsFilter;
         impl CollectionFilter for ScriptsFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().local_name == ~"script"
+                elem.deref().local_name == ~"script"
             }
         }
         let filter = ~ScriptsFilter;
@@ -770,7 +769,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         struct AnchorsFilter;
         impl CollectionFilter for AnchorsFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().local_name == ~"a" && elem.get_attribute(Null, "name").is_some()
+                elem.deref().local_name == ~"a" && elem.get_attribute(Null, "name").is_some()
             }
         }
         let filter = ~AnchorsFilter;
@@ -784,7 +783,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         struct AppletsFilter;
         impl CollectionFilter for AppletsFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().local_name == ~"applet"
+                elem.deref().local_name == ~"applet"
             }
         }
         let filter = ~AppletsFilter;
diff --git a/src/components/script/dom/documenttype.rs b/src/components/script/dom/documenttype.rs
index a5118e791da..31312bd40f1 100644
--- a/src/components/script/dom/documenttype.rs
+++ b/src/components/script/dom/documenttype.rs
@@ -74,4 +74,3 @@ impl<'a> DocumentTypeMethods for JSRef<'a, DocumentType> {
         self.system_id.clone()
     }
 }
-
diff --git a/src/components/script/dom/domparser.rs b/src/components/script/dom/domparser.rs
index 035d29cf17d..db2714c642f 100644
--- a/src/components/script/dom/domparser.rs
+++ b/src/components/script/dom/domparser.rs
@@ -36,7 +36,8 @@ impl DOMParser {
 }
 
 pub trait DOMParserMethods {
-    fn ParseFromString(&self, _s: DOMString, ty: DOMParserBinding::SupportedType) -> Fallible<Temporary<Document>>;
+    fn ParseFromString(&self, _s: DOMString, ty: DOMParserBinding::SupportedType)
+        -> Fallible<Temporary<Document>>;
 }
 
 impl<'a> DOMParserMethods for JSRef<'a, DOMParser> {
diff --git a/src/components/script/dom/element.rs b/src/components/script/dom/element.rs
index 2ee655f6156..751251584a7 100644
--- a/src/components/script/dom/element.rs
+++ b/src/components/script/dom/element.rs
@@ -228,11 +228,11 @@ pub trait AttributeHandlers {
 impl<'a> AttributeHandlers for JSRef<'a, Element> {
     fn get_attribute(&self, namespace: Namespace, name: &str) -> Option<Temporary<Attr>> {
         if self.html_element_in_html_document() {
-            self.get().attrs.iter().map(|attr| attr.root()).find(|attr| {
+            self.deref().attrs.iter().map(|attr| attr.root()).find(|attr| {
                 name.to_ascii_lower() == attr.local_name && attr.namespace == namespace
             }).map(|x| Temporary::from_rooted(&*x))
         } else {
-            self.get().attrs.iter().map(|attr| attr.root()).find(|attr| {
+            self.deref().attrs.iter().map(|attr| attr.root()).find(|attr| {
                 name == attr.local_name && attr.namespace == namespace
             }).map(|x| Temporary::from_rooted(&*x))
         }
@@ -262,9 +262,9 @@ impl<'a> AttributeHandlers for JSRef<'a, Element> {
 
         let position: |&JSRef<Attr>| -> bool =
             if self.html_element_in_html_document() {
-                |attr| attr.get().local_name.eq_ignore_ascii_case(local_name)
+                |attr| attr.deref().local_name.eq_ignore_ascii_case(local_name)
             } else {
-                |attr| attr.get().local_name == local_name
+                |attr| attr.deref().local_name == local_name
             };
         self.do_set_attribute(name.clone(), value, name.clone(), namespace::Null, None, position);
         Ok(())
@@ -273,27 +273,27 @@ impl<'a> AttributeHandlers for JSRef<'a, Element> {
     fn do_set_attribute(&mut self, local_name: DOMString, value: DOMString,
                         name: DOMString, namespace: Namespace,
                         prefix: Option<DOMString>, cb: |&JSRef<Attr>| -> bool) {
-        let idx = self.get().attrs.iter()
-                                  .map(|attr| attr.root())
-                                  .position(|attr| cb(&*attr));
+        let idx = self.deref().attrs.iter()
+                                    .map(|attr| attr.root())
+                                    .position(|attr| cb(&*attr));
         let (idx, set_type) = match idx {
             Some(idx) => (idx, ReplacedAttr),
             None => {
                 let window = window_from_node(self).root();
                 let attr = Attr::new(&*window, local_name.clone(), value.clone(),
                                      name, namespace.clone(), prefix, self);
-                self.get_mut().attrs.push_unrooted(&attr);
-                (self.get().attrs.len() - 1, FirstSetAttr)
+                self.deref_mut().attrs.push_unrooted(&attr);
+                (self.deref().attrs.len() - 1, FirstSetAttr)
             }
         };
 
-        self.get_mut().attrs.get(idx).root().set_value(set_type, value);
+        self.deref_mut().attrs.get(idx).root().set_value(set_type, value);
     }
 
     fn remove_attribute(&mut self, namespace: Namespace, name: DOMString) -> ErrorResult {
         let (_, local_name) = get_attribute_parts(name.clone());
 
-        let idx = self.get().attrs.iter().map(|attr| attr.root()).position(|attr| {
+        let idx = self.deref().attrs.iter().map(|attr| attr.root()).position(|attr| {
             attr.local_name == local_name
         });
 
@@ -306,12 +306,12 @@ impl<'a> AttributeHandlers for JSRef<'a, Element> {
                 }
 
                 if namespace == namespace::Null {
-                    let removed_raw_value = self.get().attrs.get(idx).root().Value();
+                    let removed_raw_value = self.deref().attrs.get(idx).root().Value();
                     vtable_for(NodeCast::from_mut_ref(self))
                         .before_remove_attr(local_name.clone(), removed_raw_value);
                 }
 
-                self.get_mut().attrs.remove(idx);
+                self.deref_mut().attrs.remove(idx);
             }
         };
 
@@ -516,7 +516,7 @@ impl<'a> ElementMethods for JSRef<'a, Element> {
 
         // Step 3-5.
         self.do_set_attribute(name.clone(), value, name.clone(), namespace::Null, None, |attr| {
-            attr.get().name == name
+            attr.deref().name == name
         });
         Ok(())
     }
@@ -577,8 +577,8 @@ impl<'a> ElementMethods for JSRef<'a, Element> {
 
         // Step 9.
         self.do_set_attribute(local_name.clone(), value, name, namespace.clone(), prefix, |attr| {
-            attr.get().local_name == local_name &&
-            attr.get().namespace == namespace
+            attr.deref().local_name == local_name &&
+            attr.deref().namespace == namespace
         });
         Ok(())
     }
@@ -694,9 +694,9 @@ pub fn get_attribute_parts(name: DOMString) -> (Option<~str>, ~str) {
 }
 
 impl<'a> VirtualMethods for JSRef<'a, Element> {
-    fn super_type(&self) -> Option<~VirtualMethods:> {
-        let node: &JSRef<Node> = NodeCast::from_ref(self);
-        Some(~node.clone() as ~VirtualMethods:)
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
+        let node: &mut JSRef<Node> = NodeCast::from_mut_ref(self);
+        Some(node as &mut VirtualMethods:)
     }
 
     fn after_set_attr(&mut self, name: DOMString, value: DOMString) {
@@ -709,7 +709,7 @@ impl<'a> VirtualMethods for JSRef<'a, Element> {
             "style" => {
                 let doc = document_from_node(self).root();
                 let base_url = doc.deref().url().clone();
-                self.get_mut().style_attribute = Some(style::parse_style_attribute(value, &base_url))
+                self.deref_mut().style_attribute = Some(style::parse_style_attribute(value, &base_url))
             }
             "id" => {
                 let node: &JSRef<Node> = NodeCast::from_ref(self);
@@ -732,7 +732,7 @@ impl<'a> VirtualMethods for JSRef<'a, Element> {
 
         match name.as_slice() {
             "style" => {
-                self.get_mut().style_attribute = None
+                self.deref_mut().style_attribute = None
             }
             "id" => {
                 let node: &JSRef<Node> = NodeCast::from_ref(self);
diff --git a/src/components/script/dom/event.rs b/src/components/script/dom/event.rs
index 3d6055a1408..260cf319201 100644
--- a/src/components/script/dom/event.rs
+++ b/src/components/script/dom/event.rs
@@ -160,9 +160,9 @@ impl<'a> EventMethods for JSRef<'a, Event> {
     }
 
     fn InitEvent(&mut self,
-                     type_: DOMString,
-                     bubbles: bool,
-                     cancelable: bool) {
+                 type_: DOMString,
+                 bubbles: bool,
+                 cancelable: bool) {
         self.initialized = true;
         if self.dispatching {
             return;
diff --git a/src/components/script/dom/eventdispatcher.rs b/src/components/script/dom/eventdispatcher.rs
index d15a26d6cc1..1bd90f93137 100644
--- a/src/components/script/dom/eventdispatcher.rs
+++ b/src/components/script/dom/eventdispatcher.rs
@@ -13,21 +13,21 @@ use dom::node::{Node, NodeHelpers};
 pub fn dispatch_event<'a, 'b>(target: &JSRef<'a, EventTarget>,
                               pseudo_target: Option<JSRef<'b, EventTarget>>,
                               event: &mut JSRef<Event>) -> bool {
-    assert!(!event.get().dispatching);
+    assert!(!event.deref().dispatching);
 
     {
-        let event = event.get_mut();
-        match pseudo_target {
-            Some(pseudo_target) => event.target.assign(Some(pseudo_target)),
-            None => event.target.assign(Some(target.clone())),
-        }
+        let event = event.deref_mut();
+        event.target.assign(Some(match pseudo_target {
+            Some(pseudo_target) => pseudo_target,
+            None => target.clone(),
+        }));
         event.dispatching = true;
     }
 
-    let type_ = event.get().type_.clone();
+    let type_ = event.deref().type_.clone();
 
     //TODO: no chain if not participating in a tree
-    let mut chain: Vec<Root<EventTarget>> = if target.get().is_node() {
+    let mut chain: Vec<Root<EventTarget>> = if target.deref().is_node() {
         let target_node: &JSRef<Node> = NodeCast::to_ref(target).unwrap();
         target_node.ancestors().map(|ancestor| {
             let ancestor_target: &JSRef<EventTarget> = EventTargetCast::from_ref(&ancestor);
@@ -37,7 +37,7 @@ pub fn dispatch_event<'a, 'b>(target: &JSRef<'a, EventTarget>,
         vec!()
     };
 
-    event.get_mut().phase = PhaseCapturing;
+    event.deref_mut().phase = PhaseCapturing;
 
     //FIXME: The "callback this value" should be currentTarget
 
@@ -51,12 +51,12 @@ pub fn dispatch_event<'a, 'b>(target: &JSRef<'a, EventTarget>,
                     //       drop the exception on the floor
                     assert!(listener.HandleEvent__(event, ReportExceptions).is_ok());
 
-                    if event.get().stop_immediate {
+                    if event.deref().stop_immediate {
                         break;
                     }
                 }
 
-                event.get().stop_propagation
+                event.deref().stop_propagation
             }
             None => false
         };
@@ -67,20 +67,20 @@ pub fn dispatch_event<'a, 'b>(target: &JSRef<'a, EventTarget>,
     }
 
     /* at target */
-    if !event.get().stop_propagation {
+    if !event.deref().stop_propagation {
         {
-            let event = event.get_mut();
+            let event = event.deref_mut();
             event.phase = PhaseAtTarget;
             event.current_target.assign(Some(target.clone()));
         }
 
-        let opt_listeners = target.get().get_listeners(type_);
+        let opt_listeners = target.deref().get_listeners(type_);
         for listeners in opt_listeners.iter() {
             for listener in listeners.iter() {
                 //FIXME: this should have proper error handling, or explicitly drop the
                 //       exception on the floor.
                 assert!(listener.HandleEvent__(event, ReportExceptions).is_ok());
-                if event.get().stop_immediate {
+                if event.deref().stop_immediate {
                     break;
                 }
             }
@@ -88,24 +88,24 @@ pub fn dispatch_event<'a, 'b>(target: &JSRef<'a, EventTarget>,
     }
 
     /* bubbling */
-    if event.get().bubbles && !event.get().stop_propagation {
-        event.get_mut().phase = PhaseBubbling;
+    if event.deref().bubbles && !event.deref().stop_propagation {
+        event.deref_mut().phase = PhaseBubbling;
 
         for cur_target in chain.iter() {
-            let stopped = match cur_target.get().get_listeners_for(type_, Bubbling) {
+            let stopped = match cur_target.deref().get_listeners_for(type_, Bubbling) {
                 Some(listeners) => {
-                    event.get_mut().current_target.assign(Some(cur_target.deref().clone()));
+                    event.deref_mut().current_target.assign(Some(cur_target.deref().clone()));
                     for listener in listeners.iter() {
                         //FIXME: this should have proper error handling or explicitly
                         //       drop exceptions on the floor.
                         assert!(listener.HandleEvent__(event, ReportExceptions).is_ok());
 
-                        if event.get().stop_immediate {
+                        if event.deref().stop_immediate {
                             break;
                         }
                     }
 
-                    event.get().stop_propagation
+                    event.deref().stop_propagation
                 }
                 None => false
             };
diff --git a/src/components/script/dom/eventtarget.rs b/src/components/script/dom/eventtarget.rs
index 9cd9c5484f2..17c8e19b45c 100644
--- a/src/components/script/dom/eventtarget.rs
+++ b/src/components/script/dom/eventtarget.rs
@@ -76,7 +76,7 @@ impl<'a> EventTargetHelpers for JSRef<'a, EventTarget> {
     fn dispatch_event_with_target<'b>(&self,
                                       target: Option<JSRef<'b, EventTarget>>,
                                       event: &mut JSRef<Event>) -> Fallible<bool> {
-        if event.get().dispatching || !event.get().initialized {
+        if event.deref().dispatching || !event.deref().initialized {
             return Err(InvalidState);
         }
         Ok(dispatch_event(self, target, event))
@@ -149,7 +149,7 @@ impl Reflectable for EventTarget {
 }
 
 impl<'a> VirtualMethods for JSRef<'a, EventTarget> {
-    fn super_type(&self) -> Option<~VirtualMethods:> {
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
         None
     }
 }
diff --git a/src/components/script/dom/formdata.rs b/src/components/script/dom/formdata.rs
index 33dae4b97c2..c6631699671 100644
--- a/src/components/script/dom/formdata.rs
+++ b/src/components/script/dom/formdata.rs
@@ -5,7 +5,7 @@
 use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
 use dom::bindings::error::{Fallible};
 use dom::bindings::codegen::BindingDeclarations::FormDataBinding;
-use dom::bindings::js::{JS, JSRef, Temporary};
+use dom::bindings::js::{JS, JSRef, Temporary, OptionalUnrootable};
 use dom::blob::Blob;
 use dom::htmlformelement::HTMLFormElement;
 use dom::window::Window;
@@ -33,7 +33,7 @@ impl FormData {
             data: HashMap::new(),
             reflector_: Reflector::new(),
             window: window.unrooted(),
-            form: form.map(|form| form.unrooted())
+            form: form.unrooted(),
         }
     }
 
diff --git a/src/components/script/dom/htmlbaseelement.rs b/src/components/script/dom/htmlbaseelement.rs
index 69a15849fef..1c75cd786bb 100644
--- a/src/components/script/dom/htmlbaseelement.rs
+++ b/src/components/script/dom/htmlbaseelement.rs
@@ -64,4 +64,3 @@ impl<'a> HTMLBaseElementMethods for JSRef<'a, HTMLBaseElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlbodyelement.rs b/src/components/script/dom/htmlbodyelement.rs
index d1ba59c847c..4c28b446524 100644
--- a/src/components/script/dom/htmlbodyelement.rs
+++ b/src/components/script/dom/htmlbodyelement.rs
@@ -104,4 +104,3 @@ impl<'a> HTMLBodyElementMethods for JSRef<'a, HTMLBodyElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlbrelement.rs b/src/components/script/dom/htmlbrelement.rs
index eee904135e1..bb1e57a2370 100644
--- a/src/components/script/dom/htmlbrelement.rs
+++ b/src/components/script/dom/htmlbrelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLBRElementMethods for JSRef<'a, HTMLBRElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlbuttonelement.rs b/src/components/script/dom/htmlbuttonelement.rs
index c920f999cf1..782e9a0c0c8 100644
--- a/src/components/script/dom/htmlbuttonelement.rs
+++ b/src/components/script/dom/htmlbuttonelement.rs
@@ -185,4 +185,3 @@ impl<'a> HTMLButtonElementMethods for JSRef<'a, HTMLButtonElement> {
     fn SetCustomValidity(&mut self, _error: DOMString) {
     }
 }
-
diff --git a/src/components/script/dom/htmlcanvaselement.rs b/src/components/script/dom/htmlcanvaselement.rs
index 1aba464556a..5970af52eb3 100644
--- a/src/components/script/dom/htmlcanvaselement.rs
+++ b/src/components/script/dom/htmlcanvaselement.rs
@@ -64,4 +64,3 @@ impl<'a> HTMLCanvasElementMethods for JSRef<'a, HTMLCanvasElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlcollection.rs b/src/components/script/dom/htmlcollection.rs
index 6d0a0c78edf..82b0d54693f 100644
--- a/src/components/script/dom/htmlcollection.rs
+++ b/src/components/script/dom/htmlcollection.rs
@@ -64,7 +64,7 @@ impl HTMLCollection {
         }
         impl CollectionFilter for TagNameFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().local_name == self.tag
+                elem.deref().local_name == self.tag
             }
         }
         let filter = TagNameFilter {
@@ -81,7 +81,7 @@ impl HTMLCollection {
         }
         impl CollectionFilter for TagNameNSFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().namespace == self.namespace && elem.get().local_name == self.tag
+                elem.deref().namespace == self.namespace && elem.deref().local_name == self.tag
             }
         }
         let filter = TagNameNSFilter {
@@ -155,7 +155,7 @@ impl<'a> HTMLCollectionMethods for JSRef<'a, HTMLCollection> {
                     .filter_map(|node| {
                         let elem: Option<&JSRef<Element>> = ElementCast::to_ref(&node);
                         elem.filtered(|&elem| filter.filter(elem, &*root))
-                            .and_then(|elem| Some(elem.clone()))
+                            .map(|elem| elem.clone())
                     })
                     .nth(index as uint)
                     .clone()
@@ -166,7 +166,6 @@ impl<'a> HTMLCollectionMethods for JSRef<'a, HTMLCollection> {
 
     // http://dom.spec.whatwg.org/#dom-htmlcollection-nameditem
     fn NamedItem(&self, key: DOMString) -> Option<Temporary<Element>> {
-
         // Step 1.
         if key.is_empty() {
             return None;
@@ -186,7 +185,7 @@ impl<'a> HTMLCollectionMethods for JSRef<'a, HTMLCollection> {
                     .filter_map(|node| {
                         let elem: Option<&JSRef<Element>> = ElementCast::to_ref(&node);
                         elem.filtered(|&elem| filter.filter(elem, &*root))
-                            .and_then(|elem| Some(elem.clone()))
+                            .map(|elem| elem.clone())
                     })
                     .find(|elem| {
                         elem.get_string_attribute("name") == key ||
diff --git a/src/components/script/dom/htmldataelement.rs b/src/components/script/dom/htmldataelement.rs
index b2812ef92ad..26090be7632 100644
--- a/src/components/script/dom/htmldataelement.rs
+++ b/src/components/script/dom/htmldataelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLDataElementMethods for JSRef<'a, HTMLDataElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmldatalistelement.rs b/src/components/script/dom/htmldatalistelement.rs
index 756e497cdea..1bcdd936cdc 100644
--- a/src/components/script/dom/htmldatalistelement.rs
+++ b/src/components/script/dom/htmldatalistelement.rs
@@ -49,7 +49,7 @@ impl<'a> HTMLDataListElementMethods for JSRef<'a, HTMLDataListElement> {
         struct HTMLDataListOptionsFilter;
         impl CollectionFilter for HTMLDataListOptionsFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
-                elem.get().local_name == ~"option"
+                elem.deref().local_name == ~"option"
             }
         }
         let node: &JSRef<Node> = NodeCast::from_ref(self);
@@ -58,4 +58,3 @@ impl<'a> HTMLDataListElementMethods for JSRef<'a, HTMLDataListElement> {
         HTMLCollection::create(&*window, node, filter)
     }
 }
-
diff --git a/src/components/script/dom/htmldirectoryelement.rs b/src/components/script/dom/htmldirectoryelement.rs
index 7c275b29529..c16d0f01f34 100644
--- a/src/components/script/dom/htmldirectoryelement.rs
+++ b/src/components/script/dom/htmldirectoryelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLDirectoryElementMethods for JSRef<'a, HTMLDirectoryElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmldivelement.rs b/src/components/script/dom/htmldivelement.rs
index f4b3ead4323..5f49ce250ed 100644
--- a/src/components/script/dom/htmldivelement.rs
+++ b/src/components/script/dom/htmldivelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLDivElementMethods for JSRef<'a, HTMLDivElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlelement.rs b/src/components/script/dom/htmlelement.rs
index d5de75d3c09..3443e62e51f 100644
--- a/src/components/script/dom/htmlelement.rs
+++ b/src/components/script/dom/htmlelement.rs
@@ -198,8 +198,8 @@ impl<'a> HTMLElementMethods for JSRef<'a, HTMLElement> {
 }
 
 impl<'a> VirtualMethods for JSRef<'a, HTMLElement> {
-    fn super_type(&self) -> Option<~VirtualMethods:> {
-        let element: &JSRef<Element> = ElementCast::from_ref(self);
-        Some(~element.clone() as ~VirtualMethods:)
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
+        let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
+        Some(element as &mut VirtualMethods:)
     }
 }
diff --git a/src/components/script/dom/htmlembedelement.rs b/src/components/script/dom/htmlembedelement.rs
index 8582bb86164..b1b1134f0ac 100644
--- a/src/components/script/dom/htmlembedelement.rs
+++ b/src/components/script/dom/htmlembedelement.rs
@@ -109,4 +109,3 @@ impl<'a> HTMLEmbedElementMethods for JSRef<'a, HTMLEmbedElement> {
         None
     }
 }
-
diff --git a/src/components/script/dom/htmlfieldsetelement.rs b/src/components/script/dom/htmlfieldsetelement.rs
index 7cb91d98ba1..73207cda9a9 100644
--- a/src/components/script/dom/htmlfieldsetelement.rs
+++ b/src/components/script/dom/htmlfieldsetelement.rs
@@ -91,7 +91,7 @@ impl<'a> HTMLFieldSetElementMethods for JSRef<'a, HTMLFieldSetElement> {
                 static tag_names: StaticStringVec = &["button", "fieldset", "input",
                     "keygen", "object", "output", "select", "textarea"];
                 let root: &JSRef<Element> = ElementCast::to_ref(root).unwrap();
-                elem != root && tag_names.iter().any(|&tag_name| tag_name == elem.get().local_name)
+                elem != root && tag_names.iter().any(|&tag_name| tag_name == elem.deref().local_name)
             }
         }
         let node: &JSRef<Node> = NodeCast::from_ref(self);
@@ -120,4 +120,3 @@ impl<'a> HTMLFieldSetElementMethods for JSRef<'a, HTMLFieldSetElement> {
     fn SetCustomValidity(&mut self, _error: DOMString) {
     }
 }
-
diff --git a/src/components/script/dom/htmlfontelement.rs b/src/components/script/dom/htmlfontelement.rs
index c006124bfba..e561385da49 100644
--- a/src/components/script/dom/htmlfontelement.rs
+++ b/src/components/script/dom/htmlfontelement.rs
@@ -74,4 +74,3 @@ impl<'a> HTMLFontElementMethods for JSRef<'a, HTMLFontElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlformelement.rs b/src/components/script/dom/htmlformelement.rs
index 8c3fd60d3c1..445ad6e0831 100644
--- a/src/components/script/dom/htmlformelement.rs
+++ b/src/components/script/dom/htmlformelement.rs
@@ -166,4 +166,3 @@ impl<'a> HTMLFormElementMethods for JSRef<'a, HTMLFormElement> {
         fail!("Not implemented.")
     }
 }
-
diff --git a/src/components/script/dom/htmlframeelement.rs b/src/components/script/dom/htmlframeelement.rs
index 985f02114bc..858a182ba10 100644
--- a/src/components/script/dom/htmlframeelement.rs
+++ b/src/components/script/dom/htmlframeelement.rs
@@ -135,4 +135,3 @@ impl<'a> HTMLFrameElementMethods for JSRef<'a, HTMLFrameElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlframesetelement.rs b/src/components/script/dom/htmlframesetelement.rs
index cbb3f868b98..c9effdd7e2e 100644
--- a/src/components/script/dom/htmlframesetelement.rs
+++ b/src/components/script/dom/htmlframesetelement.rs
@@ -64,4 +64,3 @@ impl<'a> HTMLFrameSetElementMethods for JSRef<'a, HTMLFrameSetElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlheadingelement.rs b/src/components/script/dom/htmlheadingelement.rs
index e1a2c8051ce..7da612ab81e 100644
--- a/src/components/script/dom/htmlheadingelement.rs
+++ b/src/components/script/dom/htmlheadingelement.rs
@@ -64,4 +64,3 @@ impl<'a> HTMLHeadingElementMethods for JSRef<'a, HTMLHeadingElement> {
     fn SetAlign(&mut self, _align: DOMString) {
     }
 }
-
diff --git a/src/components/script/dom/htmlhrelement.rs b/src/components/script/dom/htmlhrelement.rs
index 4ee1d645da6..b140486165a 100644
--- a/src/components/script/dom/htmlhrelement.rs
+++ b/src/components/script/dom/htmlhrelement.rs
@@ -94,4 +94,3 @@ impl<'a> HTMLHRElementMethods for JSRef<'a, HTMLHRElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlhtmlelement.rs b/src/components/script/dom/htmlhtmlelement.rs
index de57df51216..27ca473e3a2 100644
--- a/src/components/script/dom/htmlhtmlelement.rs
+++ b/src/components/script/dom/htmlhtmlelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLHtmlElementMethods for JSRef<'a, HTMLHtmlElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmliframeelement.rs b/src/components/script/dom/htmliframeelement.rs
index acb1a5c1da6..31c2981a5e1 100644
--- a/src/components/script/dom/htmliframeelement.rs
+++ b/src/components/script/dom/htmliframeelement.rs
@@ -238,9 +238,9 @@ impl<'a> HTMLIFrameElementMethods for JSRef<'a, HTMLIFrameElement> {
 }
 
 impl<'a> VirtualMethods for JSRef<'a, HTMLIFrameElement> {
-    fn super_type(&self) -> Option<~VirtualMethods:> {
-        let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_ref(self);
-        Some(~htmlelement.clone() as ~VirtualMethods:)
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
+        let htmlelement: &mut JSRef<HTMLElement> = HTMLElementCast::from_mut_ref(self);
+        Some(htmlelement as &mut VirtualMethods:)
     }
 
     fn after_set_attr(&mut self, name: DOMString, value: DOMString) {
@@ -264,7 +264,7 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLIFrameElement> {
                     _ => AllowNothing
                 } as u8;
             }
-            self.get_mut().sandbox = Some(modes);
+            self.deref_mut().sandbox = Some(modes);
         }
     }
 
@@ -275,7 +275,7 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLIFrameElement> {
         }
 
         if "sandbox" == name {
-            self.get_mut().sandbox = None;
+            self.deref_mut().sandbox = None;
         }
     }
 }
diff --git a/src/components/script/dom/htmlimageelement.rs b/src/components/script/dom/htmlimageelement.rs
index 6013e74334f..c3a60874c6d 100644
--- a/src/components/script/dom/htmlimageelement.rs
+++ b/src/components/script/dom/htmlimageelement.rs
@@ -218,7 +218,7 @@ impl<'a> HTMLImageElementMethods for JSRef<'a, HTMLImageElement> {
 
     fn Align(&self) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(self);
-        element.get_string_attribute("longdesc")
+        element.get_string_attribute("align")
     }
 
     fn SetAlign(&mut self, align: DOMString) {
@@ -268,9 +268,9 @@ impl<'a> HTMLImageElementMethods for JSRef<'a, HTMLImageElement> {
 }
 
 impl<'a> VirtualMethods for JSRef<'a, HTMLImageElement> {
-    fn super_type(&self) -> Option<~VirtualMethods:> {
-        let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_ref(self);
-        Some(~htmlelement.clone() as ~VirtualMethods:)
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
+        let htmlelement: &mut JSRef<HTMLElement> = HTMLElementCast::from_mut_ref(self);
+        Some(htmlelement as &mut VirtualMethods:)
     }
 
     fn after_set_attr(&mut self, name: DOMString, value: DOMString) {
@@ -281,13 +281,13 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLImageElement> {
 
         if "src" == name {
             let window = window_from_node(self).root();
-            let url = Some(window.get().get_url());
+            let url = Some(window.deref().get_url());
             self.update_image(Some(value), url);
         }
     }
 
     fn before_remove_attr(&mut self, name: DOMString, value: DOMString) {
-         match self.super_type() {
+        match self.super_type() {
             Some(ref mut s) => s.before_remove_attr(name.clone(), value.clone()),
             _ => (),
         }
diff --git a/src/components/script/dom/htmlinputelement.rs b/src/components/script/dom/htmlinputelement.rs
index 3b38421e1ce..f75ef6c248c 100644
--- a/src/components/script/dom/htmlinputelement.rs
+++ b/src/components/script/dom/htmlinputelement.rs
@@ -428,4 +428,3 @@ impl<'a> HTMLInputElementMethods for JSRef<'a, HTMLInputElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmllabelelement.rs b/src/components/script/dom/htmllabelelement.rs
index fb70e46c8b0..9c53ec073b4 100644
--- a/src/components/script/dom/htmllabelelement.rs
+++ b/src/components/script/dom/htmllabelelement.rs
@@ -52,4 +52,3 @@ impl<'a> HTMLLabelElementMethods for JSRef<'a, HTMLLabelElement> {
     fn SetHtmlFor(&mut self, _html_for: DOMString) {
     }
 }
-
diff --git a/src/components/script/dom/htmllegendelement.rs b/src/components/script/dom/htmllegendelement.rs
index 65896fae79c..ad7653e6424 100644
--- a/src/components/script/dom/htmllegendelement.rs
+++ b/src/components/script/dom/htmllegendelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLLegendElementMethods for JSRef<'a, HTMLLegendElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmllielement.rs b/src/components/script/dom/htmllielement.rs
index 7eba5d678ed..de85baea7f3 100644
--- a/src/components/script/dom/htmllielement.rs
+++ b/src/components/script/dom/htmllielement.rs
@@ -64,4 +64,3 @@ impl<'a> HTMLLIElementMethods for JSRef<'a, HTMLLIElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmllinkelement.rs b/src/components/script/dom/htmllinkelement.rs
index ff49f250778..c620526bfa1 100644
--- a/src/components/script/dom/htmllinkelement.rs
+++ b/src/components/script/dom/htmllinkelement.rs
@@ -143,4 +143,3 @@ impl<'a> HTMLLinkElementMethods for JSRef<'a, HTMLLinkElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlmediaelement.rs b/src/components/script/dom/htmlmediaelement.rs
index e2d1c437aa8..763650008a1 100644
--- a/src/components/script/dom/htmlmediaelement.rs
+++ b/src/components/script/dom/htmlmediaelement.rs
@@ -207,5 +207,3 @@ impl<'a> HTMLMediaElementMethods for JSRef<'a, HTMLMediaElement> {
         Ok(())
     }
 }
-
-
diff --git a/src/components/script/dom/htmlmetaelement.rs b/src/components/script/dom/htmlmetaelement.rs
index 0399cd31210..03cac21fca7 100644
--- a/src/components/script/dom/htmlmetaelement.rs
+++ b/src/components/script/dom/htmlmetaelement.rs
@@ -84,4 +84,3 @@ impl<'a> HTMLMetaElementMethods for JSRef<'a, HTMLMetaElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlmodelement.rs b/src/components/script/dom/htmlmodelement.rs
index ed05d72fe62..c28eb9cdfba 100644
--- a/src/components/script/dom/htmlmodelement.rs
+++ b/src/components/script/dom/htmlmodelement.rs
@@ -64,4 +64,3 @@ impl<'a> HTMLModElementMethods for JSRef<'a, HTMLModElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlobjectelement.rs b/src/components/script/dom/htmlobjectelement.rs
index 473f12aefd7..c020765d431 100644
--- a/src/components/script/dom/htmlobjectelement.rs
+++ b/src/components/script/dom/htmlobjectelement.rs
@@ -290,9 +290,9 @@ impl<'a> HTMLObjectElementMethods for JSRef<'a, HTMLObjectElement> {
 }
 
 impl<'a> VirtualMethods for JSRef<'a, HTMLObjectElement> {
-    fn super_type(&self) -> Option<~VirtualMethods:> {
-        let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_ref(self);
-        Some(~htmlelement.clone() as ~VirtualMethods:)
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
+        let htmlelement: &mut JSRef<HTMLElement> = HTMLElementCast::from_mut_ref(self);
+        Some(htmlelement as &mut VirtualMethods:)
     }
 
     fn after_set_attr(&mut self, name: DOMString, value: DOMString) {
@@ -303,8 +303,8 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLObjectElement> {
 
         if "data" == name {
             let window = window_from_node(self).root();
-            let url = Some(window.get().get_url());
-            self.process_data_url(window.get().image_cache_task.clone(), url);
+            let url = Some(window.deref().get_url());
+            self.process_data_url(window.deref().image_cache_task.clone(), url);
         }
     }
 }
diff --git a/src/components/script/dom/htmlolistelement.rs b/src/components/script/dom/htmlolistelement.rs
index 57beee67a5d..b8694f356c8 100644
--- a/src/components/script/dom/htmlolistelement.rs
+++ b/src/components/script/dom/htmlolistelement.rs
@@ -84,4 +84,3 @@ impl<'a> HTMLOListElementMethods for JSRef<'a, HTMLOListElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmloptgroupelement.rs b/src/components/script/dom/htmloptgroupelement.rs
index b4eb6e5c619..3b5c5fab456 100644
--- a/src/components/script/dom/htmloptgroupelement.rs
+++ b/src/components/script/dom/htmloptgroupelement.rs
@@ -64,4 +64,3 @@ impl<'a> HTMLOptGroupElementMethods for JSRef<'a, HTMLOptGroupElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmloptionelement.rs b/src/components/script/dom/htmloptionelement.rs
index a3f64bb9620..550d352af36 100644
--- a/src/components/script/dom/htmloptionelement.rs
+++ b/src/components/script/dom/htmloptionelement.rs
@@ -115,4 +115,3 @@ impl<'a> HTMLOptionElementMethods for JSRef<'a, HTMLOptionElement> {
         0
     }
 }
-
diff --git a/src/components/script/dom/htmloutputelement.rs b/src/components/script/dom/htmloutputelement.rs
index 46f51abcbb4..3952f3cef97 100644
--- a/src/components/script/dom/htmloutputelement.rs
+++ b/src/components/script/dom/htmloutputelement.rs
@@ -120,4 +120,3 @@ impl<'a> HTMLOutputElementMethods for JSRef<'a, HTMLOutputElement> {
     fn SetCustomValidity(&mut self, _error: DOMString) {
     }
 }
-
diff --git a/src/components/script/dom/htmlparagraphelement.rs b/src/components/script/dom/htmlparagraphelement.rs
index cf5e4aefc91..95620dec3dd 100644
--- a/src/components/script/dom/htmlparagraphelement.rs
+++ b/src/components/script/dom/htmlparagraphelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLParagraphElementMethods for JSRef<'a, HTMLParagraphElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlparamelement.rs b/src/components/script/dom/htmlparamelement.rs
index 4443dc0cd6b..115d1759964 100644
--- a/src/components/script/dom/htmlparamelement.rs
+++ b/src/components/script/dom/htmlparamelement.rs
@@ -84,4 +84,3 @@ impl<'a> HTMLParamElementMethods for JSRef<'a, HTMLParamElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlpreelement.rs b/src/components/script/dom/htmlpreelement.rs
index 2aa6f20c8a0..1cbb5236383 100644
--- a/src/components/script/dom/htmlpreelement.rs
+++ b/src/components/script/dom/htmlpreelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLPreElementMethods for JSRef<'a, HTMLPreElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlprogresselement.rs b/src/components/script/dom/htmlprogresselement.rs
index 504887a84b6..d1470c29cbf 100644
--- a/src/components/script/dom/htmlprogresselement.rs
+++ b/src/components/script/dom/htmlprogresselement.rs
@@ -74,4 +74,3 @@ impl<'a> HTMLProgressElementMethods for JSRef<'a, HTMLProgressElement> {
         Ok(0f64)
     }
 }
-
diff --git a/src/components/script/dom/htmlquoteelement.rs b/src/components/script/dom/htmlquoteelement.rs
index 910d5ce21e7..11aba48adfe 100644
--- a/src/components/script/dom/htmlquoteelement.rs
+++ b/src/components/script/dom/htmlquoteelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLQuoteElementMethods for JSRef<'a, HTMLQuoteElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlscriptelement.rs b/src/components/script/dom/htmlscriptelement.rs
index 522a9244fa6..79b42ddc423 100644
--- a/src/components/script/dom/htmlscriptelement.rs
+++ b/src/components/script/dom/htmlscriptelement.rs
@@ -136,4 +136,3 @@ impl<'a> HTMLScriptElementMethods for JSRef<'a, HTMLScriptElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlselectelement.rs b/src/components/script/dom/htmlselectelement.rs
index 676e2266880..cabeacbf47a 100644
--- a/src/components/script/dom/htmlselectelement.rs
+++ b/src/components/script/dom/htmlselectelement.rs
@@ -214,4 +214,3 @@ impl<'a> HTMLSelectElementMethods for JSRef<'a, HTMLSelectElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlserializer.rs b/src/components/script/dom/htmlserializer.rs
index 9f2bdf3e40b..3a2148547ee 100644
--- a/src/components/script/dom/htmlserializer.rs
+++ b/src/components/script/dom/htmlserializer.rs
@@ -66,7 +66,7 @@ pub fn serialize(iterator: &mut NodeIterator) -> ~str {
 }
 
 fn serialize_comment(comment: &JSRef<Comment>) -> ~str {
-    ~"<!--" + comment.get().characterdata.data + "-->"
+    ~"<!--" + comment.deref().characterdata.data + "-->"
 }
 
 fn serialize_text(text: &JSRef<Text>) -> ~str {
@@ -74,41 +74,41 @@ fn serialize_text(text: &JSRef<Text>) -> ~str {
     match text_node.parent_node().map(|node| node.root()) {
         Some(ref parent) if parent.is_element() => {
             let elem: &JSRef<Element> = ElementCast::to_ref(&**parent).unwrap();
-            match elem.get().local_name.as_slice() {
+            match elem.deref().local_name.as_slice() {
                 "style" | "script" | "xmp" | "iframe" |
                 "noembed" | "noframes" | "plaintext" |
-                "noscript" if elem.get().namespace == namespace::HTML => {
-                    text.get().characterdata.data.clone()
+                "noscript" if elem.deref().namespace == namespace::HTML => {
+                    text.deref().characterdata.data.clone()
                 },
-                _ => escape(text.get().characterdata.data, false)
+                _ => escape(text.deref().characterdata.data, false)
             }
         }
-        _ => escape(text.get().characterdata.data, false)
+        _ => escape(text.deref().characterdata.data, false)
     }
 }
 
 fn serialize_processing_instruction(processing_instruction: &JSRef<ProcessingInstruction>) -> ~str {
-    ~"<?" + processing_instruction.get().target + " " + processing_instruction.get().characterdata.data + "?>"
+    ~"<?" + processing_instruction.deref().target + " " + processing_instruction.deref().characterdata.data + "?>"
 }
 
 fn serialize_doctype(doctype: &JSRef<DocumentType>) -> ~str {
-    ~"<!DOCTYPE" + doctype.get().name + ">"
+    ~"<!DOCTYPE" + doctype.deref().name + ">"
 }
 
 fn serialize_elem(elem: &JSRef<Element>, open_elements: &mut Vec<~str>) -> ~str {
-    let mut rv = ~"<" + elem.get().local_name;
-    for attr in elem.get().attrs.iter() {
+    let mut rv = ~"<" + elem.deref().local_name;
+    for attr in elem.deref().attrs.iter() {
         let attr = attr.root();
         rv.push_str(serialize_attr(&*attr));
     };
     rv.push_str(">");
-    match elem.get().local_name.as_slice() {
-        "pre" | "listing" | "textarea" if elem.get().namespace == namespace::HTML => {
+    match elem.deref().local_name.as_slice() {
+        "pre" | "listing" | "textarea" if elem.deref().namespace == namespace::HTML => {
             let node: &JSRef<Node> = NodeCast::from_ref(elem);
             match node.first_child().map(|child| child.root()) {
                 Some(ref child) if child.is_text() => {
                     let text: &JSRef<CharacterData> = CharacterDataCast::to_ref(&**child).unwrap();
-                    if text.get().data.len() > 0 && text.get().data[0] == 0x0A as u8 {
+                    if text.deref().data.len() > 0 && text.deref().data[0] == 0x0A as u8 {
                         rv.push_str("\x0A");
                     }
                 },
@@ -117,26 +117,26 @@ fn serialize_elem(elem: &JSRef<Element>, open_elements: &mut Vec<~str>) -> ~str
         },
         _ => {}
     }
-    if !elem.get().is_void() {
-        open_elements.push(elem.get().local_name.clone());
+    if !elem.deref().is_void() {
+        open_elements.push(elem.deref().local_name.clone());
     }
     rv
 }
 
 fn serialize_attr(attr: &JSRef<Attr>) -> ~str {
-    let attr_name = if attr.get().namespace == namespace::XML {
-        ~"xml:" + attr.get().local_name.clone()
-    } else if attr.get().namespace == namespace::XMLNS &&
-        attr.get().local_name.as_slice() == "xmlns" {
+    let attr_name = if attr.deref().namespace == namespace::XML {
+        ~"xml:" + attr.deref().local_name.clone()
+    } else if attr.deref().namespace == namespace::XMLNS &&
+        attr.deref().local_name.as_slice() == "xmlns" {
         ~"xmlns"
-    } else if attr.get().namespace == namespace::XMLNS {
-        ~"xmlns:" + attr.get().local_name.clone()
-    } else if attr.get().namespace == namespace::XLink {
-        ~"xlink:" + attr.get().local_name.clone()
+    } else if attr.deref().namespace == namespace::XMLNS {
+        ~"xmlns:" + attr.deref().local_name.clone()
+    } else if attr.deref().namespace == namespace::XLink {
+        ~"xlink:" + attr.deref().local_name.clone()
     } else {
-        attr.get().name.clone()
+        attr.deref().name.clone()
     };
-    ~" " + attr_name + "=\"" + escape(attr.get().value, true) + "\""
+    ~" " + attr_name + "=\"" + escape(attr.deref().value, true) + "\""
 }
 
 fn escape(string: &str, attr_mode: bool) -> ~str {
diff --git a/src/components/script/dom/htmlsourceelement.rs b/src/components/script/dom/htmlsourceelement.rs
index bc5c70a7ce6..5ea79b01b45 100644
--- a/src/components/script/dom/htmlsourceelement.rs
+++ b/src/components/script/dom/htmlsourceelement.rs
@@ -74,4 +74,3 @@ impl<'a> HTMLSourceElementMethods for JSRef<'a, HTMLSourceElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlstyleelement.rs b/src/components/script/dom/htmlstyleelement.rs
index d5fe24aafe3..b0688f30889 100644
--- a/src/components/script/dom/htmlstyleelement.rs
+++ b/src/components/script/dom/htmlstyleelement.rs
@@ -95,19 +95,19 @@ impl<'a> StyleElementHelpers for JSRef<'a, HTMLStyleElement> {
     fn parse_own_css(&self) {
         let node: &JSRef<Node> = NodeCast::from_ref(self);
         let win = window_from_node(node).root();
-        let url = win.get().page().get_url();
+        let url = win.deref().page().get_url();
 
         let data = node.GetTextContent().expect("Element.textContent must be a string");
         let sheet = parse_inline_css(url, data);
-        let LayoutChan(ref layout_chan) = *win.get().page().layout_chan;
+        let LayoutChan(ref layout_chan) = *win.deref().page().layout_chan;
         layout_chan.send(AddStylesheetMsg(sheet));
     }
 }
 
 impl<'a> VirtualMethods for JSRef<'a, HTMLStyleElement> {
-    fn super_type(&self) -> Option<~VirtualMethods:> {
-        let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_ref(self);
-        Some(~htmlelement.clone() as ~VirtualMethods:)
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
+        let htmlelement: &mut JSRef<HTMLElement> = HTMLElementCast::from_mut_ref(self);
+        Some(htmlelement as &mut VirtualMethods:)
     }
 
     fn child_inserted(&mut self, child: &JSRef<Node>) {
diff --git a/src/components/script/dom/htmltablecaptionelement.rs b/src/components/script/dom/htmltablecaptionelement.rs
index 6586e4d2703..914208ccb73 100644
--- a/src/components/script/dom/htmltablecaptionelement.rs
+++ b/src/components/script/dom/htmltablecaptionelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLTableCaptionElementMethods for JSRef<'a, HTMLTableCaptionElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmltablecellelement.rs b/src/components/script/dom/htmltablecellelement.rs
index 9673551c23e..d03e2d83d72 100644
--- a/src/components/script/dom/htmltablecellelement.rs
+++ b/src/components/script/dom/htmltablecellelement.rs
@@ -189,5 +189,3 @@ impl<'a> HTMLTableCellElementMethods for JSRef<'a, HTMLTableCellElement> {
         Ok(())
     }
 }
-
-
diff --git a/src/components/script/dom/htmltablecolelement.rs b/src/components/script/dom/htmltablecolelement.rs
index cc126ad81e0..c6a02b669ad 100644
--- a/src/components/script/dom/htmltablecolelement.rs
+++ b/src/components/script/dom/htmltablecolelement.rs
@@ -104,4 +104,3 @@ impl<'a> HTMLTableColElementMethods for JSRef<'a, HTMLTableColElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmltableelement.rs b/src/components/script/dom/htmltableelement.rs
index f734f9a4ec4..b3e040d2098 100644
--- a/src/components/script/dom/htmltableelement.rs
+++ b/src/components/script/dom/htmltableelement.rs
@@ -164,4 +164,3 @@ impl<'a> HTMLTableElementMethods for JSRef<'a, HTMLTableElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmltablerowelement.rs b/src/components/script/dom/htmltablerowelement.rs
index 35956388968..053735b5f40 100644
--- a/src/components/script/dom/htmltablerowelement.rs
+++ b/src/components/script/dom/htmltablerowelement.rs
@@ -119,4 +119,3 @@ impl<'a> HTMLTableRowElementMethods for JSRef<'a, HTMLTableRowElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmltablesectionelement.rs b/src/components/script/dom/htmltablesectionelement.rs
index b22a8ee694f..def03af4bb2 100644
--- a/src/components/script/dom/htmltablesectionelement.rs
+++ b/src/components/script/dom/htmltablesectionelement.rs
@@ -89,4 +89,3 @@ impl<'a> HTMLTableSectionElementMethods for JSRef<'a, HTMLTableSectionElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmltextareaelement.rs b/src/components/script/dom/htmltextareaelement.rs
index 25a3742bc33..45343a0bc02 100644
--- a/src/components/script/dom/htmltextareaelement.rs
+++ b/src/components/script/dom/htmltextareaelement.rs
@@ -244,4 +244,3 @@ impl<'a> HTMLTextAreaElementMethods for JSRef<'a, HTMLTextAreaElement> {
     fn SetRangeText(&self, _replacement: DOMString) {
     }
 }
-
diff --git a/src/components/script/dom/htmltimeelement.rs b/src/components/script/dom/htmltimeelement.rs
index 63a73d2f63e..34f466419a1 100644
--- a/src/components/script/dom/htmltimeelement.rs
+++ b/src/components/script/dom/htmltimeelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLTimeElementMethods for JSRef<'a, HTMLTimeElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmltitleelement.rs b/src/components/script/dom/htmltitleelement.rs
index 55383c0e62a..e327231cc4b 100644
--- a/src/components/script/dom/htmltitleelement.rs
+++ b/src/components/script/dom/htmltitleelement.rs
@@ -54,4 +54,3 @@ impl<'a> HTMLTitleElementMethods for JSRef<'a, HTMLTitleElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmltrackelement.rs b/src/components/script/dom/htmltrackelement.rs
index 5f0f80708ad..f54eec79e38 100644
--- a/src/components/script/dom/htmltrackelement.rs
+++ b/src/components/script/dom/htmltrackelement.rs
@@ -99,4 +99,3 @@ impl<'a> HTMLTrackElementMethods for JSRef<'a, HTMLTrackElement> {
         0
     }
 }
-
diff --git a/src/components/script/dom/htmlulistelement.rs b/src/components/script/dom/htmlulistelement.rs
index f91f96a7b90..a7e5738efd9 100644
--- a/src/components/script/dom/htmlulistelement.rs
+++ b/src/components/script/dom/htmlulistelement.rs
@@ -64,4 +64,3 @@ impl<'a> HTMLUListElementMethods for JSRef<'a, HTMLUListElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/htmlvideoelement.rs b/src/components/script/dom/htmlvideoelement.rs
index 22bdc154bba..eaa4e98eb06 100644
--- a/src/components/script/dom/htmlvideoelement.rs
+++ b/src/components/script/dom/htmlvideoelement.rs
@@ -84,4 +84,3 @@ impl<'a> HTMLVideoElementMethods for JSRef<'a, HTMLVideoElement> {
         Ok(())
     }
 }
-
diff --git a/src/components/script/dom/location.rs b/src/components/script/dom/location.rs
index 72769bc0a37..93485f0b264 100644
--- a/src/components/script/dom/location.rs
+++ b/src/components/script/dom/location.rs
@@ -161,7 +161,6 @@ impl<'a> LocationMethods for JSRef<'a, Location> {
     }
 }
 
-
 impl Reflectable for Location {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         &self.reflector_
diff --git a/src/components/script/dom/navigator.rs b/src/components/script/dom/navigator.rs
index 2e31fbe8cbb..ec72aef0ff2 100644
--- a/src/components/script/dom/navigator.rs
+++ b/src/components/script/dom/navigator.rs
@@ -113,7 +113,6 @@ impl<'a> NavigatorMethods for JSRef<'a, Navigator> {
     }
 }
 
-
 impl Reflectable for Navigator {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         &self.reflector_
diff --git a/src/components/script/dom/node.rs b/src/components/script/dom/node.rs
index 6a3d0aa14f5..e9a2d0ca37b 100644
--- a/src/components/script/dom/node.rs
+++ b/src/components/script/dom/node.rs
@@ -10,7 +10,7 @@ use dom::bindings::codegen::InheritTypes::{ElementCast, TextCast, NodeCast, Elem
 use dom::bindings::codegen::InheritTypes::{CharacterDataCast, NodeBase, NodeDerived};
 use dom::bindings::codegen::InheritTypes::{ProcessingInstructionCast, EventTargetCast};
 use dom::bindings::codegen::BindingDeclarations::NodeBinding::NodeConstants;
-use dom::bindings::js::{JS, JSRef, RootedReference, Temporary, Root};
+use dom::bindings::js::{JS, JSRef, RootedReference, Temporary, Root, OptionalUnrootable};
 use dom::bindings::js::{OptionalSettable, TemporaryPushable, OptionalRootedRootable};
 use dom::bindings::js::{ResultRootable, OptionalRootable};
 use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
@@ -255,7 +255,7 @@ impl<'a> PrivateNodeHelpers for JSRef<'a, Node> {
         document.deref().content_changed();
     }
 
-    // http://spec.whatwg.org/#node-is-removed
+    // http://dom.spec.whatwg.org/#node-is-removed
     fn node_removed(&self) {
         assert!(self.parent_node().is_none());
         let document = document_from_node(self).root();
@@ -417,9 +417,9 @@ pub trait NodeHelpers {
     fn dump_indent(&self, indent: uint);
     fn debug_str(&self) -> ~str;
 
-    fn traverse_preorder<'a>(&self) -> TreeIterator<'a>;
-    fn sequential_traverse_postorder<'a>(&self) -> TreeIterator<'a>;
-    fn inclusively_following_siblings(&self) -> AbstractNodeChildrenIterator;
+    fn traverse_preorder<'a>(&'a self) -> TreeIterator<'a>;
+    fn sequential_traverse_postorder<'a>(&'a self) -> TreeIterator<'a>;
+    fn inclusively_following_siblings<'a>(&'a self) -> AbstractNodeChildrenIterator<'a>;
 
     fn to_trusted_node_address(&self) -> TrustedNodeAddress;
 
@@ -455,34 +455,34 @@ impl<'a> NodeHelpers for JSRef<'a, Node> {
     }
 
     fn is_in_doc(&self) -> bool {
-        self.get().flags.is_in_doc()
+        self.deref().flags.is_in_doc()
     }
 
     /// Returns the type ID of this node. Fails if this node is borrowed mutably.
     fn type_id(&self) -> NodeTypeId {
-        self.get().type_id
+        self.deref().type_id
     }
 
     fn parent_node(&self) -> Option<Temporary<Node>> {
-        self.get().parent_node.clone().map(|node| Temporary::new(node))
+        self.deref().parent_node.clone().map(|node| Temporary::new(node))
     }
 
     fn first_child(&self) -> Option<Temporary<Node>> {
-        self.get().first_child.clone().map(|node| Temporary::new(node))
+        self.deref().first_child.clone().map(|node| Temporary::new(node))
     }
 
     fn last_child(&self) -> Option<Temporary<Node>> {
-        self.get().last_child.clone().map(|node| Temporary::new(node))
+        self.deref().last_child.clone().map(|node| Temporary::new(node))
     }
 
     /// Returns the previous sibling of this node. Fails if this node is borrowed mutably.
     fn prev_sibling(&self) -> Option<Temporary<Node>> {
-        self.get().prev_sibling.clone().map(|node| Temporary::new(node))
+        self.deref().prev_sibling.clone().map(|node| Temporary::new(node))
     }
 
     /// Returns the next sibling of this node. Fails if this node is borrowed mutably.
     fn next_sibling(&self) -> Option<Temporary<Node>> {
-        self.get().next_sibling.clone().map(|node| Temporary::new(node))
+        self.deref().next_sibling.clone().map(|node| Temporary::new(node))
     }
 
     #[inline]
@@ -536,22 +536,22 @@ impl<'a> NodeHelpers for JSRef<'a, Node> {
     }
 
     /// Iterates over this node and all its descendants, in preorder.
-    fn traverse_preorder<'a>(&self) -> TreeIterator<'a> {
+    fn traverse_preorder<'a>(&'a self) -> TreeIterator<'a> {
         let mut nodes = vec!();
         gather_abstract_nodes(self, &mut nodes, false);
         TreeIterator::new(nodes)
     }
 
     /// Iterates over this node and all its descendants, in postorder.
-    fn sequential_traverse_postorder<'a>(&self) -> TreeIterator<'a> {
+    fn sequential_traverse_postorder<'a>(&'a self) -> TreeIterator<'a> {
         let mut nodes = vec!();
         gather_abstract_nodes(self, &mut nodes, true);
         TreeIterator::new(nodes)
     }
 
-    fn inclusively_following_siblings(&self) -> AbstractNodeChildrenIterator {
+    fn inclusively_following_siblings<'a>(&'a self) -> AbstractNodeChildrenIterator<'a> {
         AbstractNodeChildrenIterator {
-            current_node: Some((*self.unrooted().root()).clone()),
+            current_node: Some(self.clone()),
         }
     }
 
@@ -561,7 +561,7 @@ impl<'a> NodeHelpers for JSRef<'a, Node> {
 
     fn following_siblings(&self) -> AbstractNodeChildrenIterator {
         AbstractNodeChildrenIterator {
-            current_node: self.next_sibling().map(|node| (*node.root()).clone()),
+            current_node: self.next_sibling().root().map(|next| next.deref().clone()),
         }
     }
 
@@ -573,12 +573,12 @@ impl<'a> NodeHelpers for JSRef<'a, Node> {
     }
 
     fn to_trusted_node_address(&self) -> TrustedNodeAddress {
-        TrustedNodeAddress(self.get() as *Node as *libc::c_void)
+        TrustedNodeAddress(self.deref() as *Node as *libc::c_void)
     }
 
     fn get_bounding_content_box(&self) -> Rect<Au> {
         let window = window_from_node(self).root();
-        let page = window.get().page();
+        let page = window.deref().page();
         let (chan, port) = channel();
         let addr = self.to_trusted_node_address();
         let ContentBoxResponse(rect) = page.query_layout(ContentBoxQuery(addr, chan), port);
@@ -587,7 +587,7 @@ impl<'a> NodeHelpers for JSRef<'a, Node> {
 
     fn get_content_boxes(&self) -> Vec<Rect<Au>> {
         let window = window_from_node(self).root();
-        let page = window.get().page();
+        let page = window.deref().page();
         let (chan, port) = channel();
         let addr = self.to_trusted_node_address();
         let ContentBoxesResponse(rects) = page.query_layout(ContentBoxesQuery(addr, chan), port);
@@ -803,7 +803,7 @@ impl NodeIterator {
     fn next_child<'b>(&self, node: &JSRef<'b, Node>) -> Option<JSRef<Node>> {
         if !self.include_descendants_of_void && node.is_element() {
             let elem: &JSRef<Element> = ElementCast::to_ref(node).unwrap();
-            if elem.get().is_void() {
+            if elem.deref().is_void() {
                 None
             } else {
                 node.first_child().map(|child| (*child.root()).clone())
@@ -861,15 +861,15 @@ impl<'a> Iterator<JSRef<'a, Node>> for NodeIterator {
     }
 }
 
-fn gather_abstract_nodes<'a>(cur: &JSRef<Node>, refs: &mut Vec<JSRef<Node>>, postorder: bool) {
+fn gather_abstract_nodes<'a>(cur: &JSRef<'a, Node>, refs: &mut Vec<JSRef<'a, Node>>, postorder: bool) {
     if !postorder {
-        refs.push((*cur.unrooted().root()).clone());
+        refs.push(cur.clone());
     }
     for kid in cur.children() {
         gather_abstract_nodes(&kid, refs, postorder)
     }
     if postorder {
-        refs.push((*cur.unrooted().root()).clone());
+        refs.push(cur.clone());
     }
 }
 
@@ -889,9 +889,9 @@ impl Node {
              wrap_fn:   extern "Rust" fn(*JSContext, &JSRef<Window>, ~N) -> JS<N>)
              -> Temporary<N> {
         assert!(node.reflector().get_jsobject().is_null());
-        let window = document.get().window.root();
+        let window = document.deref().window.root();
         let node = reflect_dom_object(node, &window.root_ref(), wrap_fn).root();
-        assert!(node.reflector().get_jsobject().is_not_null());
+        assert!(node.deref().reflector().get_jsobject().is_not_null());
         Temporary::from_rooted(&*node)
     }
 
@@ -914,7 +914,7 @@ impl Node {
             next_sibling: None,
             prev_sibling: None,
 
-            owner_doc: doc.map(|doc| doc.unrooted()),
+            owner_doc: doc.unrooted(),
             child_list: None,
 
             flags: NodeFlags::new(type_id),
@@ -1110,7 +1110,7 @@ impl Node {
         // Step 8.
         for node in nodes.mut_iter() {
             parent.add_child(node, child.clone());
-            node.get_mut().flags.set_is_in_doc(parent.is_in_doc());
+            node.deref_mut().flags.set_is_in_doc(parent.is_in_doc());
         }
 
         // Step 9.
@@ -1193,7 +1193,7 @@ impl Node {
         // Step 6-7: mutation observers.
         // Step 8.
         parent.remove_child(node);
-        node.get_mut().flags.set_is_in_doc(false);
+        node.deref_mut().flags.set_is_in_doc(false);
 
         // Step 9.
         match suppress_observers {
@@ -1217,7 +1217,7 @@ impl Node {
         let mut copy: Root<Node> = match node.type_id() {
             DoctypeNodeTypeId => {
                 let doctype: &JSRef<DocumentType> = DocumentTypeCast::to_ref(node).unwrap();
-                let doctype = doctype.get();
+                let doctype = doctype.deref();
                 let doctype = DocumentType::new(doctype.name.clone(),
                                                 Some(doctype.public_id.clone()),
                                                 Some(doctype.system_id.clone()), &*document);
@@ -1229,7 +1229,7 @@ impl Node {
             },
             CommentNodeTypeId => {
                 let comment: &JSRef<Comment> = CommentCast::to_ref(node).unwrap();
-                let comment = comment.get();
+                let comment = comment.deref();
                 let comment = Comment::new(comment.characterdata.data.clone(), &*document);
                 NodeCast::from_unrooted(comment)
             },
@@ -1246,19 +1246,19 @@ impl Node {
             },
             ElementNodeTypeId(..) => {
                 let element: &JSRef<Element> = ElementCast::to_ref(node).unwrap();
-                let element = element.get();
+                let element = element.deref();
                 let element = build_element_from_tag(element.local_name.clone(), &*document);
                 NodeCast::from_unrooted(element)
             },
             TextNodeTypeId => {
                 let text: &JSRef<Text> = TextCast::to_ref(node).unwrap();
-                let text = text.get();
+                let text = text.deref();
                 let text = Text::new(text.characterdata.data.clone(), &*document);
                 NodeCast::from_unrooted(text)
             },
             ProcessingInstructionNodeTypeId => {
                 let pi: &JSRef<ProcessingInstruction> = ProcessingInstructionCast::to_ref(node).unwrap();
-                let pi = pi.get();
+                let pi = pi.deref();
                 let pi = ProcessingInstruction::new(pi.target.clone(),
                                                     pi.characterdata.data.clone(), &*document);
                 NodeCast::from_unrooted(pi)
@@ -1275,7 +1275,7 @@ impl Node {
         assert!(&*copy.owner_doc().root() == &*document);
 
         // Step 4 (some data already copied in step 2).
-        match node.get().type_id {
+        match node.type_id() {
             DocumentNodeTypeId => {
                 let node_doc: &JSRef<Document> = DocumentCast::to_ref(node).unwrap();
                 let copy_doc: &mut JSRef<Document> = DocumentCast::to_mut_ref(&mut *copy).unwrap();
@@ -1284,16 +1284,16 @@ impl Node {
             },
             ElementNodeTypeId(..) => {
                 let node_elem: &JSRef<Element> = ElementCast::to_ref(node).unwrap();
-                let node_elem = node_elem.get();
+                let node_elem = node_elem.deref();
                 let copy_elem: &mut JSRef<Element> = ElementCast::to_mut_ref(&mut *copy).unwrap();
 
                 // XXX: to avoid double borrowing compile error. we might be able to fix this after #1854
                 let copy_elem_alias = copy_elem.clone();
 
-                let copy_elem = copy_elem.get_mut();
+                let copy_elem = copy_elem.deref_mut();
                 // FIXME: https://github.com/mozilla/servo/issues/1737
                 copy_elem.namespace = node_elem.namespace.clone();
-                let window = document.get().window.root();
+                let window = document.deref().window.root();
                 for attr in node_elem.attrs.iter().map(|attr| attr.root()) {
                     copy_elem.attrs.push_unrooted(
                         &Attr::new(&*window,
@@ -1396,7 +1396,7 @@ impl<'a> NodeMethods for JSRef<'a, Node> {
             CommentNodeTypeId => ~"#comment",
             DoctypeNodeTypeId => {
                 let doctype: &JSRef<DocumentType> = DocumentTypeCast::to_ref(self).unwrap();
-                doctype.get().name.clone()
+                doctype.deref().name.clone()
             },
             DocumentFragmentNodeTypeId => ~"#document-fragment",
             DocumentNodeTypeId => ~"#document"
@@ -1514,7 +1514,7 @@ impl<'a> NodeMethods for JSRef<'a, Node> {
                 for node in self.traverse_preorder() {
                     if node.is_text() {
                         let text: &JSRef<Text> = TextCast::to_ref(&node).unwrap();
-                        content.push_str(text.get().characterdata.data.as_slice());
+                        content.push_str(text.deref().characterdata.data.as_slice());
                     }
                 }
                 Some(content)
@@ -1557,7 +1557,7 @@ impl<'a> NodeMethods for JSRef<'a, Node> {
 
                 {
                     let characterdata: &mut JSRef<CharacterData> = CharacterDataCast::to_mut_ref(self).unwrap();
-                    characterdata.get_mut().data = value.clone();
+                    characterdata.deref_mut().data = value.clone();
                 }
 
                 // Notify the document that the content of this node is different
@@ -1755,35 +1755,35 @@ impl<'a> NodeMethods for JSRef<'a, Node> {
         fn is_equal_doctype(node: &JSRef<Node>, other: &JSRef<Node>) -> bool {
             let doctype: &JSRef<DocumentType> = DocumentTypeCast::to_ref(node).unwrap();
             let other_doctype: &JSRef<DocumentType> = DocumentTypeCast::to_ref(other).unwrap();
-            (doctype.get().name == other_doctype.get().name) &&
-            (doctype.get().public_id == other_doctype.get().public_id) &&
-            (doctype.get().system_id == other_doctype.get().system_id)
+            (doctype.deref().name == other_doctype.deref().name) &&
+            (doctype.deref().public_id == other_doctype.deref().public_id) &&
+            (doctype.deref().system_id == other_doctype.deref().system_id)
         }
         fn is_equal_element(node: &JSRef<Node>, other: &JSRef<Node>) -> bool {
             let element: &JSRef<Element> = ElementCast::to_ref(node).unwrap();
             let other_element: &JSRef<Element> = ElementCast::to_ref(other).unwrap();
             // FIXME: namespace prefix
-            (element.get().namespace == other_element.get().namespace) &&
-            (element.get().local_name == other_element.get().local_name) &&
-            (element.get().attrs.len() == other_element.get().attrs.len())
+            (element.deref().namespace == other_element.deref().namespace) &&
+            (element.deref().local_name == other_element.deref().local_name) &&
+            (element.deref().attrs.len() == other_element.deref().attrs.len())
         }
         fn is_equal_processinginstruction(node: &JSRef<Node>, other: &JSRef<Node>) -> bool {
             let pi: &JSRef<ProcessingInstruction> = ProcessingInstructionCast::to_ref(node).unwrap();
             let other_pi: &JSRef<ProcessingInstruction> = ProcessingInstructionCast::to_ref(other).unwrap();
-            (pi.get().target == other_pi.get().target) &&
-            (pi.get().characterdata.data == other_pi.get().characterdata.data)
+            (pi.deref().target == other_pi.deref().target) &&
+            (pi.deref().characterdata.data == other_pi.deref().characterdata.data)
         }
         fn is_equal_characterdata(node: &JSRef<Node>, other: &JSRef<Node>) -> bool {
             let characterdata: &JSRef<CharacterData> = CharacterDataCast::to_ref(node).unwrap();
             let other_characterdata: &JSRef<CharacterData> = CharacterDataCast::to_ref(other).unwrap();
-            characterdata.get().data == other_characterdata.get().data
+            characterdata.deref().data == other_characterdata.deref().data
         }
         fn is_equal_element_attrs(node: &JSRef<Node>, other: &JSRef<Node>) -> bool {
             let element: &JSRef<Element> = ElementCast::to_ref(node).unwrap();
             let other_element: &JSRef<Element> = ElementCast::to_ref(other).unwrap();
-            assert!(element.get().attrs.len() == other_element.get().attrs.len());
-            element.get().attrs.iter().map(|attr| attr.root()).all(|attr| {
-                other_element.get().attrs.iter().map(|attr| attr.root()).any(|other_attr| {
+            assert!(element.deref().attrs.len() == other_element.deref().attrs.len());
+            element.deref().attrs.iter().map(|attr| attr.root()).all(|attr| {
+                other_element.deref().attrs.iter().map(|attr| attr.root()).any(|other_attr| {
                     (attr.namespace == other_attr.namespace) &&
                     (attr.local_name == other_attr.local_name) &&
                     (attr.value == other_attr.value)
@@ -1929,8 +1929,8 @@ pub fn window_from_node<T: NodeBase>(derived: &JSRef<T>) -> Temporary<Window> {
 }
 
 impl<'a> VirtualMethods for JSRef<'a, Node> {
-    fn super_type(&self) -> Option<~VirtualMethods:> {
-        let eventtarget: &JSRef<EventTarget> = EventTargetCast::from_ref(self);
-        Some(~eventtarget.clone() as ~VirtualMethods:)
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
+        let eventtarget: &mut JSRef<EventTarget> = EventTargetCast::from_mut_ref(self);
+        Some(eventtarget as &mut VirtualMethods:)
     }
 }
diff --git a/src/components/script/dom/processinginstruction.rs b/src/components/script/dom/processinginstruction.rs
index 1152a9c20b2..2b7846b9f53 100644
--- a/src/components/script/dom/processinginstruction.rs
+++ b/src/components/script/dom/processinginstruction.rs
@@ -50,4 +50,3 @@ impl<'a> ProcessingInstructionMethods for JSRef<'a, ProcessingInstruction> {
         self.target.clone()
     }
 }
-
diff --git a/src/components/script/dom/testbinding.rs b/src/components/script/dom/testbinding.rs
index cade75c1f95..a860d1c3d0f 100644
--- a/src/components/script/dom/testbinding.rs
+++ b/src/components/script/dom/testbinding.rs
@@ -154,7 +154,7 @@ pub trait TestBindingMethods {
     fn PassOptionalNullableString(&self, _: Option<Option<DOMString>>);
     fn PassOptionalNullableByteString(&self, _: Option<Option<ByteString>>) {}
     // fn PassOptionalNullableEnum(&self, _: Option<Option<TestEnum>>);
-    fn PassOptionalNullableInterface(&self, _: Option<Option<JS<Blob>>>);
+    fn PassOptionalNullableInterface(&self, _: Option<Option<JSRef<Blob>>>);
     fn PassOptionalNullableUnion(&self, _: Option<Option<HTMLElementOrLong>>);
 
     fn PassOptionalBooleanWithDefault(&self, _: bool);
@@ -268,7 +268,7 @@ impl<'a> TestBindingMethods for JSRef<'a, TestBinding> {
     fn GetEnumAttributeNullable(&self) -> Option<TestEnum> { Some(_empty) }
     fn GetInterfaceAttributeNullable(&self) -> Option<Temporary<Blob>> {
         let window = self.window.root();
-        Some(Blob::new(&(*window)))
+        Some(Blob::new(&*window))
     }
     fn SetInterfaceAttributeNullable(&self, _: Option<JSRef<Blob>>) {}
 
@@ -340,7 +340,7 @@ impl<'a> TestBindingMethods for JSRef<'a, TestBinding> {
     fn PassOptionalNullableString(&self, _: Option<Option<DOMString>>) {}
     fn PassOptionalNullableByteString(&self, _: Option<Option<ByteString>>) {}
     // fn PassOptionalNullableEnum(&self, _: Option<Option<TestEnum>>) {}
-    fn PassOptionalNullableInterface(&self, _: Option<Option<JS<Blob>>>) {}
+    fn PassOptionalNullableInterface(&self, _: Option<Option<JSRef<Blob>>>) {}
     fn PassOptionalNullableUnion(&self, _: Option<Option<HTMLElementOrLong>>) {}
 
     fn PassOptionalBooleanWithDefault(&self, _: bool) {}
diff --git a/src/components/script/dom/text.rs b/src/components/script/dom/text.rs
index 0f331090e37..ac523808241 100644
--- a/src/components/script/dom/text.rs
+++ b/src/components/script/dom/text.rs
@@ -60,4 +60,3 @@ impl<'a> TextMethods for JSRef<'a, Text> {
         Ok(~"")
     }
 }
-
diff --git a/src/components/script/dom/uievent.rs b/src/components/script/dom/uievent.rs
index 2af9ca3540d..631353fe498 100644
--- a/src/components/script/dom/uievent.rs
+++ b/src/components/script/dom/uievent.rs
@@ -146,7 +146,6 @@ impl<'a> UIEventMethods for JSRef<'a, UIEvent> {
     }
 }
 
-
 impl Reflectable for UIEvent {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         self.event.reflector()
diff --git a/src/components/script/dom/validitystate.rs b/src/components/script/dom/validitystate.rs
index 7069b1572dd..15c654fc814 100644
--- a/src/components/script/dom/validitystate.rs
+++ b/src/components/script/dom/validitystate.rs
@@ -80,7 +80,6 @@ impl<'a> ValidityStateMethods for JSRef<'a, ValidityState> {
     }
 }
 
-
 impl Reflectable for ValidityState {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         &self.reflector_
diff --git a/src/components/script/dom/virtualmethods.rs b/src/components/script/dom/virtualmethods.rs
index f67d97985e1..2b0d9aabfe5 100644
--- a/src/components/script/dom/virtualmethods.rs
+++ b/src/components/script/dom/virtualmethods.rs
@@ -17,7 +17,7 @@ use dom::htmliframeelement::HTMLIFrameElement;
 use dom::htmlimageelement::HTMLImageElement;
 use dom::htmlobjectelement::HTMLObjectElement;
 use dom::htmlstyleelement::HTMLStyleElement;
-use dom::node::{Node, ElementNodeTypeId};
+use dom::node::{Node, NodeHelpers, ElementNodeTypeId};
 use servo_util::str::DOMString;
 
 /// Trait to allow DOM nodes to opt-in to overriding (or adding to) common
@@ -25,7 +25,7 @@ use servo_util::str::DOMString;
 pub trait VirtualMethods {
     /// Returns self as the superclass of the implementation for this trait,
     /// if any.
-    fn super_type(&self) -> Option<~VirtualMethods:>;
+    fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:>;
 
     /// Called when changing or adding attributes, after the attribute's value
     /// has been updated.
@@ -75,7 +75,7 @@ pub trait VirtualMethods {
 /// concrete type, propagating up the parent hierarchy unless otherwise
 /// interrupted.
 pub fn vtable_for<'a>(node: &'a mut JSRef<Node>) -> &'a mut VirtualMethods: {
-    match node.get().type_id {
+    match node.type_id() {
         ElementNodeTypeId(HTMLImageElementTypeId) => {
             let element: &mut JSRef<HTMLImageElement> = HTMLImageElementCast::to_mut_ref(node).unwrap();
             element as &mut VirtualMethods:
diff --git a/src/components/script/dom/webidls/TestBinding.webidl b/src/components/script/dom/webidls/TestBinding.webidl
index 883e24c329e..89325125da2 100644
--- a/src/components/script/dom/webidls/TestBinding.webidl
+++ b/src/components/script/dom/webidls/TestBinding.webidl
@@ -156,7 +156,7 @@ interface TestBinding {
   void passOptionalNullableString(optional DOMString? arg);
   void passOptionalNullableByteString(optional ByteString? arg);
   // void passOptionalNullableEnum(optional TestEnum? arg);
-  //void passOptionalNullableInterface(optional Blob? arg); //XXXjdm disabled until later commit
+  void passOptionalNullableInterface(optional Blob? arg);
   void passOptionalNullableUnion(optional (HTMLElement or long)? arg);
 
   void passOptionalBooleanWithDefault(optional boolean arg = false);
diff --git a/src/components/script/html/hubbub_html_parser.rs b/src/components/script/html/hubbub_html_parser.rs
index 452f1c8640b..8cebc7326e6 100644
--- a/src/components/script/html/hubbub_html_parser.rs
+++ b/src/components/script/html/hubbub_html_parser.rs
@@ -81,7 +81,7 @@ trait NodeWrapping<T> {
 
 impl<'a, T: NodeBase+Reflectable> NodeWrapping<T> for JSRef<'a, T> {
     unsafe fn to_hubbub_node(&self) -> hubbub::NodeDataPtr {
-        cast::transmute(self.get())
+        cast::transmute(self.deref())
     }
 }
 
@@ -293,7 +293,6 @@ pub fn parse_html(page: &Page,
     let mut parser = hubbub::Parser("UTF-8", false);
     debug!("created parser");
 
-
     parser.set_document_node(unsafe { document.to_hubbub_node() });
     parser.enable_scripting(true);
     parser.enable_styling(true);
@@ -393,7 +392,7 @@ pub fn parse_html(page: &Page,
                         let SubpageId(id_num) = subpage_id;
                         *next_subpage_id.borrow_mut() = SubpageId(id_num + 1);
 
-                        iframe_element.get_mut().size = Some(IFrameSize {
+                        iframe_element.deref_mut().size = Some(IFrameSize {
                             pipeline_id: pipeline_id,
                             subpage_id: subpage_id,
                         });
@@ -477,7 +476,7 @@ pub fn parse_html(page: &Page,
                 match script.get_attribute(Null, "src").root() {
                     Some(src) => {
                         debug!("found script: {:s}", src.deref().Value());
-                        let new_url = parse_url(src.get().value_ref(), Some(url3.clone()));
+                        let new_url = parse_url(src.deref().value_ref(), Some(url3.clone()));
                         js_chan2.send(JSTaskNewFile(new_url));
                     }
                     None => {
@@ -487,7 +486,7 @@ pub fn parse_html(page: &Page,
                         for child in scriptnode.children() {
                             debug!("child = {:?}", child);
                             let text: &JSRef<Text> = TextCast::to_ref(&child).unwrap();
-                            data.push(text.get().characterdata.data.to_str());  // FIXME: Bad copy.
+                            data.push(text.deref().characterdata.data.to_str());  // FIXME: Bad copy.
                         }
 
                         debug!("script data = {:?}", data);
diff --git a/src/components/script/script_task.rs b/src/components/script/script_task.rs
index 1363a1dbc3d..46609cc0614 100644
--- a/src/components/script/script_task.rs
+++ b/src/components/script/script_task.rs
@@ -419,7 +419,7 @@ impl Page {
                 anchors.find(|node| {
                     let elem: &JSRef<Element> = ElementCast::to_ref(node).unwrap();
                     elem.get_attribute(Null, "name").root().map_or(false, |attr| {
-                        attr.get().value_ref() == fragid
+                        attr.deref().value_ref() == fragid
                     })
                 }).map(|node| Temporary::from_rooted(ElementCast::to_ref(&node).unwrap()))
             }
@@ -758,19 +758,18 @@ impl ScriptTask {
 
     /// Handles a timer that fired.
     fn handle_fire_timer_msg(&self, id: PipelineId, timer_id: TimerId) {
-
         let mut page_tree = self.page_tree.borrow_mut();
         let page = page_tree.find(id).expect("ScriptTask: received fire timer msg for a
             pipeline ID not associated with this script task. This is a bug.").page();
         let frame = page.frame();
         let mut window = frame.get_ref().window.root();
 
+        let this_value = window.deref().reflector().get_jsobject();
+
         let is_interval;
-        match window.get().active_timers.find(&timer_id) {
+        match window.deref().active_timers.find(&timer_id) {
             None => return,
             Some(timer_handle) => {
-                let this_value = window.reflector().get_jsobject();
-
                 // TODO: Support extra arguments. This requires passing a `*JSVal` array as `argv`.
                 let rval = NullValue();
                 let js_info = page.js_info();
@@ -785,7 +784,7 @@ impl ScriptTask {
         }
 
         if !is_interval {
-            window.get_mut().active_timers.remove(&timer_id);
+            window.deref_mut().active_timers.remove(&timer_id);
         }
     }
 
@@ -874,7 +873,6 @@ impl ScriptTask {
     fn load(&self, pipeline_id: PipelineId, url: Url) {
         debug!("ScriptTask: loading {:?} on page {:?}", url, pipeline_id);
 
-
         let mut page_tree = self.page_tree.borrow_mut();
         let page_tree = page_tree.find(pipeline_id).expect("ScriptTask: received a load
             message for a layout channel that is not associated with this script task. This
@@ -903,7 +901,7 @@ impl ScriptTask {
                                      self.image_cache_task.clone()).root();
         page.initialize_js_info(cx.clone(), window.reflector().get_jsobject());
         let mut document = Document::new(&*window, Some(url.clone()), HTMLDocument, None).root();
-        window.get_mut().init_browser_context(&*document);
+        window.deref_mut().init_browser_context(&*document);
 
         {
             let mut js_info = page.mut_js_info();
@@ -1118,7 +1116,7 @@ impl ScriptTask {
 
                         if node.deref().is_element() {
                             let element: &JSRef<Element> = ElementCast::to_ref(&*node).unwrap();
-                            if "a" == element.get().local_name {
+                            if "a" == element.deref().local_name {
                                 self.load_url_from_element(page, element)
                             }
                         }
@@ -1205,10 +1203,10 @@ impl ScriptTask {
         let attr = element.get_attribute(Null, "href");
         for href in attr.root().iter() {
             debug!("ScriptTask: clicked on link to {:s}", href.Value());
-            let click_frag = href.get().value_ref().starts_with("#");
+            let click_frag = href.deref().value_ref().starts_with("#");
             let base_url = Some(page.get_url());
             debug!("ScriptTask: current url is {:?}", base_url);
-            let url = parse_url(href.get().value_ref(), base_url);
+            let url = parse_url(href.deref().value_ref(), base_url);
 
             if click_frag {
                 match page.find_fragment_node(url.fragment.unwrap()).root() {