diff --git a/mozilla/layout/base/public/nsIFrame.h b/mozilla/layout/base/public/nsIFrame.h
index 5f817efe934..04b8e2b4fbe 100644
--- a/mozilla/layout/base/public/nsIFrame.h
+++ b/mozilla/layout/base/public/nsIFrame.h
@@ -478,6 +478,13 @@ public:
    */
   NS_IMETHOD  GetWindow(nsIWidget*&) const = 0;
 
+  /**
+   * Get the "type" of the frame. May return a NULL atom pointer
+   *
+   * @see nsLayoutAtoms
+   */
+  NS_IMETHOD  GetFrameType(nsIAtom*& aType) const = 0;
+  
   /**
    * Is this frame a "containing block"?
    */
diff --git a/mozilla/layout/generic/nsFrame.cpp b/mozilla/layout/generic/nsFrame.cpp
index cd6325f4e7c..23a55c617ff 100644
--- a/mozilla/layout/generic/nsFrame.cpp
+++ b/mozilla/layout/generic/nsFrame.cpp
@@ -1501,6 +1501,13 @@ NS_IMETHODIMP nsFrame::GetWindow(nsIWidget*& aWindow) const
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsFrame::GetFrameType(nsIAtom*& aType) const
+{
+  aType = nsnull;
+  return NS_OK;
+}
+
 void
 nsFrame::Invalidate(const nsRect& aDamageRect,
                     PRBool aImmediate) const
diff --git a/mozilla/layout/generic/nsFrame.h b/mozilla/layout/generic/nsFrame.h
index c3fc2d5bf95..e7a441416bf 100644
--- a/mozilla/layout/generic/nsFrame.h
+++ b/mozilla/layout/generic/nsFrame.h
@@ -191,6 +191,7 @@ public:
   NS_IMETHOD  GetParentWithView(nsIFrame*& aParent) const;
   NS_IMETHOD  GetOffsetFromView(nsPoint& aOffset, nsIView*& aView) const;
   NS_IMETHOD  GetWindow(nsIWidget*&) const;
+  NS_IMETHOD  GetFrameType(nsIAtom*& aType) const;
   NS_IMETHOD  IsPercentageBase(PRBool& aBase) const;
   NS_IMETHOD  GetAutoMarginSize(PRUint8 aSide, nscoord& aSize) const;
   NS_IMETHOD  GetNextSibling(nsIFrame*& aNextSibling) const;
diff --git a/mozilla/layout/generic/nsIFrame.h b/mozilla/layout/generic/nsIFrame.h
index 5f817efe934..04b8e2b4fbe 100644
--- a/mozilla/layout/generic/nsIFrame.h
+++ b/mozilla/layout/generic/nsIFrame.h
@@ -478,6 +478,13 @@ public:
    */
   NS_IMETHOD  GetWindow(nsIWidget*&) const = 0;
 
+  /**
+   * Get the "type" of the frame. May return a NULL atom pointer
+   *
+   * @see nsLayoutAtoms
+   */
+  NS_IMETHOD  GetFrameType(nsIAtom*& aType) const = 0;
+  
   /**
    * Is this frame a "containing block"?
    */
diff --git a/mozilla/layout/html/base/src/nsFrame.cpp b/mozilla/layout/html/base/src/nsFrame.cpp
index cd6325f4e7c..23a55c617ff 100644
--- a/mozilla/layout/html/base/src/nsFrame.cpp
+++ b/mozilla/layout/html/base/src/nsFrame.cpp
@@ -1501,6 +1501,13 @@ NS_IMETHODIMP nsFrame::GetWindow(nsIWidget*& aWindow) const
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsFrame::GetFrameType(nsIAtom*& aType) const
+{
+  aType = nsnull;
+  return NS_OK;
+}
+
 void
 nsFrame::Invalidate(const nsRect& aDamageRect,
                     PRBool aImmediate) const
diff --git a/mozilla/layout/html/base/src/nsFrame.h b/mozilla/layout/html/base/src/nsFrame.h
index c3fc2d5bf95..e7a441416bf 100644
--- a/mozilla/layout/html/base/src/nsFrame.h
+++ b/mozilla/layout/html/base/src/nsFrame.h
@@ -191,6 +191,7 @@ public:
   NS_IMETHOD  GetParentWithView(nsIFrame*& aParent) const;
   NS_IMETHOD  GetOffsetFromView(nsPoint& aOffset, nsIView*& aView) const;
   NS_IMETHOD  GetWindow(nsIWidget*&) const;
+  NS_IMETHOD  GetFrameType(nsIAtom*& aType) const;
   NS_IMETHOD  IsPercentageBase(PRBool& aBase) const;
   NS_IMETHOD  GetAutoMarginSize(PRUint8 aSide, nscoord& aSize) const;
   NS_IMETHOD  GetNextSibling(nsIFrame*& aNextSibling) const;