diff --git a/embedding/browser/powerplant/source/CBrowserChrome.cpp b/embedding/browser/powerplant/source/CBrowserChrome.cpp
index 33d23cbd8f47..389f891fd52d 100644
--- a/embedding/browser/powerplant/source/CBrowserChrome.cpp
+++ b/embedding/browser/powerplant/source/CBrowserChrome.cpp
@@ -109,11 +109,12 @@ void CBrowserChrome::SetBrowserShell(CBrowserShell *aShell)
 // CBrowserChrome::nsISupports
 //*****************************************************************************   
 
-NS_IMPL_ISUPPORTS7(CBrowserChrome,
+NS_IMPL_ISUPPORTS8(CBrowserChrome,
                    nsIWebBrowserChrome,
                    nsIInterfaceRequestor,
                    nsIWebBrowserChromeFocus,
                    nsIEmbeddingSiteWindow,
+                   nsIEmbeddingSiteWindow2,
                    nsIContextMenuListener,
                    nsITooltipListener,
                    nsISupportsWeakReference);
@@ -340,7 +341,7 @@ NS_IMETHODIMP CBrowserChrome::GetDimensions(PRUint32 flags, PRInt32 *x, PRInt32
 
 NS_IMETHODIMP CBrowserChrome::SetFocus()
 {
-    // We're driving focus through CBrowserShell::BeTarget()
+    mBrowserWindow->Select();
     return NS_OK;
 }
 
@@ -416,6 +417,26 @@ NS_IMETHODIMP CBrowserChrome::GetSiteWindow(void * *aSiteWindow)
 }
 
 
+//*****************************************************************************
+// CBrowserChrome::nsIEmbeddingSiteWindow2
+//*****************************************************************************   
+
+NS_IMETHODIMP CBrowserChrome::Blur(void)
+{    
+    WindowPtr   currWindow = ::GetWindowList();
+    WindowPtr   nextWindow;
+
+    // Find the rearmost window and put ourselves behind it
+    while (currWindow && ((nextWindow = ::MacGetNextWindow(currWindow)) != nsnull))
+        currWindow = nextWindow;
+
+    WindowPtr ourWindow = mBrowserWindow->GetMacWindow();
+    if (ourWindow != currWindow)
+        ::SendBehind(ourWindow, currWindow);
+    
+    return NS_OK;
+}
+
 //*****************************************************************************
 // CBrowserChrome::nsIContextMenuListener
 //*****************************************************************************   
diff --git a/embedding/browser/powerplant/source/CBrowserChrome.h b/embedding/browser/powerplant/source/CBrowserChrome.h
index c5194b20081f..095fcc0234a4 100644
--- a/embedding/browser/powerplant/source/CBrowserChrome.h
+++ b/embedding/browser/powerplant/source/CBrowserChrome.h
@@ -48,6 +48,7 @@
 #include "nsIWebBrowserChrome.h"
 #include "nsIWebBrowserChromeFocus.h"
 #include "nsIEmbeddingSiteWindow.h"
+#include "nsIEmbeddingSiteWindow2.h"
 #include "nsIInterfaceRequestor.h"
 #include "nsIInterfaceRequestorUtils.h"
 #include "nsIContextMenuListener.h"
@@ -64,7 +65,7 @@ class CBrowserShell;
 
 class CBrowserChrome : public nsIWebBrowserChrome,
                        public nsIWebBrowserChromeFocus,
-                       public nsIEmbeddingSiteWindow,
+                       public nsIEmbeddingSiteWindow2,
                        public nsIInterfaceRequestor,
                        public nsIContextMenuListener,
                        public nsITooltipListener,
@@ -78,6 +79,7 @@ public:
     NS_DECL_NSIWEBBROWSERCHROME
     NS_DECL_NSIWEBBROWSERCHROMEFOCUS
     NS_DECL_NSIEMBEDDINGSITEWINDOW
+    NS_DECL_NSIEMBEDDINGSITEWINDOW2
     NS_DECL_NSIINTERFACEREQUESTOR
     NS_DECL_NSICONTEXTMENULISTENER
     NS_DECL_NSITOOLTIPLISTENER