diff --git a/mozilla/content/xul/document/src/nsXULDocument.cpp b/mozilla/content/xul/document/src/nsXULDocument.cpp
index 3db62f50b04..9672cc30d4d 100644
--- a/mozilla/content/xul/document/src/nsXULDocument.cpp
+++ b/mozilla/content/xul/document/src/nsXULDocument.cpp
@@ -2844,8 +2844,32 @@ nsXULDocument::CreateRange(nsIDOMRange** aRange)
 NS_IMETHODIMP
 nsXULDocument::GetDefaultView(nsIDOMAbstractView** aDefaultView)
 {
-    NS_NOTREACHED("nsXULDocument::GetDefaultView");
-    return NS_ERROR_NOT_IMPLEMENTED;
+  NS_ENSURE_ARG_POINTER(aDefaultView);
+  *aDefaultView = nsnull;
+
+  nsIPresShell *shell = NS_STATIC_CAST(nsIPresShell *,
+                                       mPresShells.ElementAt(0));
+  NS_ENSURE_TRUE(shell, NS_OK);
+
+  nsCOMPtr<nsIPresContext> ctx;
+  nsresult rv = shell->GetPresContext(getter_AddRefs(ctx));
+  NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && ctx, rv);
+
+  nsCOMPtr<nsISupports> container;
+  rv = ctx->GetContainer(getter_AddRefs(container));
+  NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && container, rv);
+
+  nsCOMPtr<nsIInterfaceRequestor> ifrq(do_QueryInterface(container));
+  NS_ENSURE_TRUE(ifrq, NS_OK);
+
+  nsCOMPtr<nsIDOMWindow> window;
+  ifrq->GetInterface(NS_GET_IID(nsIDOMWindow), getter_AddRefs(window));
+  NS_ENSURE_TRUE(window, NS_OK);
+
+  window->QueryInterface(NS_GET_IID(nsIDOMAbstractView),
+                         (void **)aDefaultView);
+
+  return NS_OK;
 }
 
 nsresult
diff --git a/mozilla/rdf/content/src/nsXULDocument.cpp b/mozilla/rdf/content/src/nsXULDocument.cpp
index 3db62f50b04..9672cc30d4d 100644
--- a/mozilla/rdf/content/src/nsXULDocument.cpp
+++ b/mozilla/rdf/content/src/nsXULDocument.cpp
@@ -2844,8 +2844,32 @@ nsXULDocument::CreateRange(nsIDOMRange** aRange)
 NS_IMETHODIMP
 nsXULDocument::GetDefaultView(nsIDOMAbstractView** aDefaultView)
 {
-    NS_NOTREACHED("nsXULDocument::GetDefaultView");
-    return NS_ERROR_NOT_IMPLEMENTED;
+  NS_ENSURE_ARG_POINTER(aDefaultView);
+  *aDefaultView = nsnull;
+
+  nsIPresShell *shell = NS_STATIC_CAST(nsIPresShell *,
+                                       mPresShells.ElementAt(0));
+  NS_ENSURE_TRUE(shell, NS_OK);
+
+  nsCOMPtr<nsIPresContext> ctx;
+  nsresult rv = shell->GetPresContext(getter_AddRefs(ctx));
+  NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && ctx, rv);
+
+  nsCOMPtr<nsISupports> container;
+  rv = ctx->GetContainer(getter_AddRefs(container));
+  NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && container, rv);
+
+  nsCOMPtr<nsIInterfaceRequestor> ifrq(do_QueryInterface(container));
+  NS_ENSURE_TRUE(ifrq, NS_OK);
+
+  nsCOMPtr<nsIDOMWindow> window;
+  ifrq->GetInterface(NS_GET_IID(nsIDOMWindow), getter_AddRefs(window));
+  NS_ENSURE_TRUE(window, NS_OK);
+
+  window->QueryInterface(NS_GET_IID(nsIDOMAbstractView),
+                         (void **)aDefaultView);
+
+  return NS_OK;
 }
 
 nsresult