diff --git a/mozilla/content/base/src/nsHTMLValue.cpp b/mozilla/content/base/src/nsHTMLValue.cpp
index 408130f3853..9e05ead2be9 100644
--- a/mozilla/content/base/src/nsHTMLValue.cpp
+++ b/mozilla/content/base/src/nsHTMLValue.cpp
@@ -19,6 +19,7 @@
 #include "nsHTMLValue.h"
 #include "nsString.h"
 #include "nsCRT.h"
+#include "nsISizeOfHandler.h"
 
 const nsHTMLValue nsHTMLValue::kNull;
 
@@ -291,3 +292,13 @@ void nsHTMLValue::ToString(nsString& aBuffer) const
   AppendToString(aBuffer);
 }
 
+void
+nsHTMLValue::SizeOf(nsISizeOfHandler* aHandler) const
+{
+  aHandler->Add(sizeof(*this));
+  if (eHTMLUnit_String == mUnit) {
+    if (!aHandler->HaveSeen(mValue.mString)) {
+      mValue.mString->SizeOf(aHandler);
+    }
+  }
+}
diff --git a/mozilla/content/base/src/nsHTMLValue.h b/mozilla/content/base/src/nsHTMLValue.h
index cc5f437f953..5e6860f8bb6 100644
--- a/mozilla/content/base/src/nsHTMLValue.h
+++ b/mozilla/content/base/src/nsHTMLValue.h
@@ -22,7 +22,7 @@
 #include "nsColor.h"
 #include "nsString.h"
 #include "nsISupports.h"
-
+class nsISizeOfHandler;
 
 enum nsHTMLUnit {
   eHTMLUnit_Null          = 0,      // (n/a) null unit, value is not specified
@@ -72,6 +72,7 @@ public:
 
   void  AppendToString(nsString& aBuffer) const;
   void  ToString(nsString& aBuffer) const;
+  void  SizeOf(nsISizeOfHandler* aHandler) const;
 
 protected:
   nsHTMLUnit  mUnit;
diff --git a/mozilla/content/html/style/src/nsHTMLAttributes.cpp b/mozilla/content/html/style/src/nsHTMLAttributes.cpp
index 650c95a3417..abdd9f00b7b 100644
--- a/mozilla/content/html/style/src/nsHTMLAttributes.cpp
+++ b/mozilla/content/html/style/src/nsHTMLAttributes.cpp
@@ -123,8 +123,12 @@ struct HTMLAttribute {
 void
 HTMLAttribute::SizeOf(nsISizeOfHandler* aHandler) const
 {
-  // XXX mAttribute
+  if (!aHandler->HaveSeen(mAttribute)) {
+    mAttribute->SizeOf(aHandler);
+  }
   aHandler->Add(sizeof(*this));
+  aHandler->Add((size_t) (- ((PRInt32) sizeof(mValue)) ) );
+  mValue.SizeOf(aHandler);
   if (!aHandler->HaveSeen(mNext)) {
     mNext->SizeOf(aHandler);
   }
diff --git a/mozilla/content/html/style/src/nsHTMLValue.cpp b/mozilla/content/html/style/src/nsHTMLValue.cpp
index 408130f3853..9e05ead2be9 100644
--- a/mozilla/content/html/style/src/nsHTMLValue.cpp
+++ b/mozilla/content/html/style/src/nsHTMLValue.cpp
@@ -19,6 +19,7 @@
 #include "nsHTMLValue.h"
 #include "nsString.h"
 #include "nsCRT.h"
+#include "nsISizeOfHandler.h"
 
 const nsHTMLValue nsHTMLValue::kNull;
 
@@ -291,3 +292,13 @@ void nsHTMLValue::ToString(nsString& aBuffer) const
   AppendToString(aBuffer);
 }
 
+void
+nsHTMLValue::SizeOf(nsISizeOfHandler* aHandler) const
+{
+  aHandler->Add(sizeof(*this));
+  if (eHTMLUnit_String == mUnit) {
+    if (!aHandler->HaveSeen(mValue.mString)) {
+      mValue.mString->SizeOf(aHandler);
+    }
+  }
+}
diff --git a/mozilla/content/html/style/src/nsHTMLValue.h b/mozilla/content/html/style/src/nsHTMLValue.h
index cc5f437f953..5e6860f8bb6 100644
--- a/mozilla/content/html/style/src/nsHTMLValue.h
+++ b/mozilla/content/html/style/src/nsHTMLValue.h
@@ -22,7 +22,7 @@
 #include "nsColor.h"
 #include "nsString.h"
 #include "nsISupports.h"
-
+class nsISizeOfHandler;
 
 enum nsHTMLUnit {
   eHTMLUnit_Null          = 0,      // (n/a) null unit, value is not specified
@@ -72,6 +72,7 @@ public:
 
   void  AppendToString(nsString& aBuffer) const;
   void  ToString(nsString& aBuffer) const;
+  void  SizeOf(nsISizeOfHandler* aHandler) const;
 
 protected:
   nsHTMLUnit  mUnit;
diff --git a/mozilla/content/shared/public/nsHTMLValue.h b/mozilla/content/shared/public/nsHTMLValue.h
index cc5f437f953..5e6860f8bb6 100644
--- a/mozilla/content/shared/public/nsHTMLValue.h
+++ b/mozilla/content/shared/public/nsHTMLValue.h
@@ -22,7 +22,7 @@
 #include "nsColor.h"
 #include "nsString.h"
 #include "nsISupports.h"
-
+class nsISizeOfHandler;
 
 enum nsHTMLUnit {
   eHTMLUnit_Null          = 0,      // (n/a) null unit, value is not specified
@@ -72,6 +72,7 @@ public:
 
   void  AppendToString(nsString& aBuffer) const;
   void  ToString(nsString& aBuffer) const;
+  void  SizeOf(nsISizeOfHandler* aHandler) const;
 
 protected:
   nsHTMLUnit  mUnit;
diff --git a/mozilla/content/shared/src/nsHTMLValue.cpp b/mozilla/content/shared/src/nsHTMLValue.cpp
index 408130f3853..9e05ead2be9 100644
--- a/mozilla/content/shared/src/nsHTMLValue.cpp
+++ b/mozilla/content/shared/src/nsHTMLValue.cpp
@@ -19,6 +19,7 @@
 #include "nsHTMLValue.h"
 #include "nsString.h"
 #include "nsCRT.h"
+#include "nsISizeOfHandler.h"
 
 const nsHTMLValue nsHTMLValue::kNull;
 
@@ -291,3 +292,13 @@ void nsHTMLValue::ToString(nsString& aBuffer) const
   AppendToString(aBuffer);
 }
 
+void
+nsHTMLValue::SizeOf(nsISizeOfHandler* aHandler) const
+{
+  aHandler->Add(sizeof(*this));
+  if (eHTMLUnit_String == mUnit) {
+    if (!aHandler->HaveSeen(mValue.mString)) {
+      mValue.mString->SizeOf(aHandler);
+    }
+  }
+}
diff --git a/mozilla/layout/generic/nsImageMap.cpp b/mozilla/layout/generic/nsImageMap.cpp
index 362f85aecf0..db80818da81 100644
--- a/mozilla/layout/generic/nsImageMap.cpp
+++ b/mozilla/layout/generic/nsImageMap.cpp
@@ -79,7 +79,11 @@ void
 Area::SizeOf(nsISizeOfHandler* aHandler) const
 {
   aHandler->Add(sizeof(*this));
-  // XXX mBase, mHREF, mTarget, mAltText
+  aHandler->Add((size_t) (- ((PRInt32)sizeof(nsString) * 4) ) );
+  mBase.SizeOf(aHandler);
+  mHREF.SizeOf(aHandler);
+  mTarget.SizeOf(aHandler);
+  mAltText.SizeOf(aHandler);
   aHandler->Add(mNumCoords * sizeof(nscoord));
 }
 
@@ -712,9 +716,17 @@ NS_IMETHODIMP
 ImageMapImpl::SizeOf(nsISizeOfHandler* aHandler) const
 {
   aHandler->Add(sizeof(*this));
-  // XXX mName
-  // XXX mTag
-  // XXX mAreas array slots
+
+  aHandler->Add((size_t) (- ((PRInt32) sizeof(mName))));
+  mName.SizeOf(aHandler);
+
+  if (!aHandler->HaveSeen(mTag)) {
+    mTag->SizeOf(aHandler);
+  }
+
+  aHandler->Add((size_t) (- ((PRInt32) sizeof(mAreas))));
+  mAreas.SizeOf(aHandler);
+
   PRInt32 i, n = mAreas.Count();
   for (i = 0; i < n; i++) {
     Area* area = (Area*) mAreas[i];
diff --git a/mozilla/layout/html/base/src/nsHTMLContainer.cpp b/mozilla/layout/html/base/src/nsHTMLContainer.cpp
index 10443075d99..66b0624e15e 100644
--- a/mozilla/layout/html/base/src/nsHTMLContainer.cpp
+++ b/mozilla/layout/html/base/src/nsHTMLContainer.cpp
@@ -85,7 +85,8 @@ nsHTMLContainer::SizeOf(nsISizeOfHandler* aHandler) const
 void
 nsHTMLContainer::SizeOfWithoutThis(nsISizeOfHandler* aHandler) const
 {
-  // XXX children array's array of pointers
+  aHandler->Add((size_t) (- (PRInt32)sizeof(mChildren) ) );
+  mChildren.SizeOf(aHandler);
 
   PRInt32 i, n = mChildren.Count();
   for (i = 0; i < n; i++) {
diff --git a/mozilla/layout/html/base/src/nsHTMLImage.cpp b/mozilla/layout/html/base/src/nsHTMLImage.cpp
index 5e2ee6ca308..a1d9f66f3ff 100644
--- a/mozilla/layout/html/base/src/nsHTMLImage.cpp
+++ b/mozilla/layout/html/base/src/nsHTMLImage.cpp
@@ -165,7 +165,7 @@ nsHTMLImageLoader::SizeOf(nsISizeOfHandler* aHandler) const
 {
   aHandler->Add(sizeof(*this));
   if (!aHandler->HaveSeen(mURLSpec)) {
-    aHandler->Add(sizeof(*mURLSpec));/* XXX approximation */
+    mURLSpec->SizeOf(aHandler);
   }
   if (!aHandler->HaveSeen(mImageLoader)) {
     mImageLoader->SizeOf(aHandler);
diff --git a/mozilla/layout/html/base/src/nsHTMLTagContent.cpp b/mozilla/layout/html/base/src/nsHTMLTagContent.cpp
index 43aaaabff80..23ee9b5bbab 100644
--- a/mozilla/layout/html/base/src/nsHTMLTagContent.cpp
+++ b/mozilla/layout/html/base/src/nsHTMLTagContent.cpp
@@ -92,7 +92,9 @@ nsHTMLTagContent::SizeOf(nsISizeOfHandler* aHandler) const
 void
 nsHTMLTagContent::SizeOfWithoutThis(nsISizeOfHandler* aHandler) const
 {
-  // XXX tag
+  if (!aHandler->HaveSeen(mTag)) {
+    mTag->SizeOf(aHandler);
+  }
   if (!aHandler->HaveSeen(mAttributes)) {
     mAttributes->SizeOf(aHandler);
   }
diff --git a/mozilla/layout/html/base/src/nsImageMap.cpp b/mozilla/layout/html/base/src/nsImageMap.cpp
index 362f85aecf0..db80818da81 100644
--- a/mozilla/layout/html/base/src/nsImageMap.cpp
+++ b/mozilla/layout/html/base/src/nsImageMap.cpp
@@ -79,7 +79,11 @@ void
 Area::SizeOf(nsISizeOfHandler* aHandler) const
 {
   aHandler->Add(sizeof(*this));
-  // XXX mBase, mHREF, mTarget, mAltText
+  aHandler->Add((size_t) (- ((PRInt32)sizeof(nsString) * 4) ) );
+  mBase.SizeOf(aHandler);
+  mHREF.SizeOf(aHandler);
+  mTarget.SizeOf(aHandler);
+  mAltText.SizeOf(aHandler);
   aHandler->Add(mNumCoords * sizeof(nscoord));
 }
 
@@ -712,9 +716,17 @@ NS_IMETHODIMP
 ImageMapImpl::SizeOf(nsISizeOfHandler* aHandler) const
 {
   aHandler->Add(sizeof(*this));
-  // XXX mName
-  // XXX mTag
-  // XXX mAreas array slots
+
+  aHandler->Add((size_t) (- ((PRInt32) sizeof(mName))));
+  mName.SizeOf(aHandler);
+
+  if (!aHandler->HaveSeen(mTag)) {
+    mTag->SizeOf(aHandler);
+  }
+
+  aHandler->Add((size_t) (- ((PRInt32) sizeof(mAreas))));
+  mAreas.SizeOf(aHandler);
+
   PRInt32 i, n = mAreas.Count();
   for (i = 0; i < n; i++) {
     Area* area = (Area*) mAreas[i];
diff --git a/mozilla/layout/html/style/src/nsHTMLAttributes.cpp b/mozilla/layout/html/style/src/nsHTMLAttributes.cpp
index 650c95a3417..abdd9f00b7b 100644
--- a/mozilla/layout/html/style/src/nsHTMLAttributes.cpp
+++ b/mozilla/layout/html/style/src/nsHTMLAttributes.cpp
@@ -123,8 +123,12 @@ struct HTMLAttribute {
 void
 HTMLAttribute::SizeOf(nsISizeOfHandler* aHandler) const
 {
-  // XXX mAttribute
+  if (!aHandler->HaveSeen(mAttribute)) {
+    mAttribute->SizeOf(aHandler);
+  }
   aHandler->Add(sizeof(*this));
+  aHandler->Add((size_t) (- ((PRInt32) sizeof(mValue)) ) );
+  mValue.SizeOf(aHandler);
   if (!aHandler->HaveSeen(mNext)) {
     mNext->SizeOf(aHandler);
   }
diff --git a/mozilla/layout/html/style/src/nsHTMLValue.cpp b/mozilla/layout/html/style/src/nsHTMLValue.cpp
index 408130f3853..9e05ead2be9 100644
--- a/mozilla/layout/html/style/src/nsHTMLValue.cpp
+++ b/mozilla/layout/html/style/src/nsHTMLValue.cpp
@@ -19,6 +19,7 @@
 #include "nsHTMLValue.h"
 #include "nsString.h"
 #include "nsCRT.h"
+#include "nsISizeOfHandler.h"
 
 const nsHTMLValue nsHTMLValue::kNull;
 
@@ -291,3 +292,13 @@ void nsHTMLValue::ToString(nsString& aBuffer) const
   AppendToString(aBuffer);
 }
 
+void
+nsHTMLValue::SizeOf(nsISizeOfHandler* aHandler) const
+{
+  aHandler->Add(sizeof(*this));
+  if (eHTMLUnit_String == mUnit) {
+    if (!aHandler->HaveSeen(mValue.mString)) {
+      mValue.mString->SizeOf(aHandler);
+    }
+  }
+}
diff --git a/mozilla/layout/html/style/src/nsHTMLValue.h b/mozilla/layout/html/style/src/nsHTMLValue.h
index cc5f437f953..5e6860f8bb6 100644
--- a/mozilla/layout/html/style/src/nsHTMLValue.h
+++ b/mozilla/layout/html/style/src/nsHTMLValue.h
@@ -22,7 +22,7 @@
 #include "nsColor.h"
 #include "nsString.h"
 #include "nsISupports.h"
-
+class nsISizeOfHandler;
 
 enum nsHTMLUnit {
   eHTMLUnit_Null          = 0,      // (n/a) null unit, value is not specified
@@ -72,6 +72,7 @@ public:
 
   void  AppendToString(nsString& aBuffer) const;
   void  ToString(nsString& aBuffer) const;
+  void  SizeOf(nsISizeOfHandler* aHandler) const;
 
 protected:
   nsHTMLUnit  mUnit;