diff --git a/content/html/content/src/nsGenericHTMLElement.cpp b/content/html/content/src/nsGenericHTMLElement.cpp
index 1844036d2f84..7d27eb8b8018 100644
--- a/content/html/content/src/nsGenericHTMLElement.cpp
+++ b/content/html/content/src/nsGenericHTMLElement.cpp
@@ -1221,7 +1221,7 @@ nsGenericHTMLElement::SetAttribute(nsIAtom* aAttribute,
     }
 
     if (aNotify && (nsnull != mDocument)) {
-      mDocument->AttributeChanged(mContent, aAttribute);
+      mDocument->AttributeChanged(mContent, aAttribute, NS_STYLE_HINT_UNKNOWN);
     }
   }
   return result;
@@ -1241,7 +1241,7 @@ nsGenericHTMLElement::SetAttribute(nsIAtom* aAttribute,
       NS_RELEASE(sheet);
     }
     if (aNotify) {
-      mDocument->AttributeChanged(mContent, aAttribute);
+      mDocument->AttributeChanged(mContent, aAttribute, NS_STYLE_HINT_UNKNOWN);
     }
   }
   else {  // manage this ourselves and re-sync when we connect to doc
@@ -1287,7 +1287,7 @@ nsGenericHTMLElement::UnsetAttribute(nsIAtom* aAttribute, PRBool aNotify)
       NS_RELEASE(sheet);
     }
     if (aNotify) {
-      mDocument->AttributeChanged(mContent, aAttribute);
+      mDocument->AttributeChanged(mContent, aAttribute, NS_STYLE_HINT_UNKNOWN);
     }
   }
   else {  // manage this ourselves and re-sync when we connect to doc
diff --git a/layout/html/content/src/nsDOMStyleDeclaration.cpp b/layout/html/content/src/nsDOMStyleDeclaration.cpp
index cd1fd44f3e52..fdeb5055d0b2 100644
--- a/layout/html/content/src/nsDOMStyleDeclaration.cpp
+++ b/layout/html/content/src/nsDOMStyleDeclaration.cpp
@@ -256,7 +256,8 @@ nsDOMStyleDeclaration::SetProperty(const nsString& aPropertyName,
     nsICSSParser* css;
     result = NS_NewCSSParser(&css);
     if (NS_OK == result) {
-      result = css->ParseAndAppendDeclaration(declString, nsnull, *decl);
+      PRInt32 hint;
+      result = css->ParseAndAppendDeclaration(declString, nsnull, decl, &hint);
       if (NS_OK == result) {
         if (aPriority.Equals("!important")) {
           char prop[50];
@@ -266,7 +267,7 @@ nsDOMStyleDeclaration::SetProperty(const nsString& aPropertyName,
         nsIDocument *doc;
         result = mContent->GetDocument(doc);
         if (NS_OK == result) {
-          doc->AttributeChanged(mContent, nsHTMLAtoms::style);
+          doc->AttributeChanged(mContent, nsHTMLAtoms::style, hint);
           NS_RELEASE(doc);
         }
       }
diff --git a/layout/html/content/src/nsGenericHTMLElement.cpp b/layout/html/content/src/nsGenericHTMLElement.cpp
index 1844036d2f84..7d27eb8b8018 100644
--- a/layout/html/content/src/nsGenericHTMLElement.cpp
+++ b/layout/html/content/src/nsGenericHTMLElement.cpp
@@ -1221,7 +1221,7 @@ nsGenericHTMLElement::SetAttribute(nsIAtom* aAttribute,
     }
 
     if (aNotify && (nsnull != mDocument)) {
-      mDocument->AttributeChanged(mContent, aAttribute);
+      mDocument->AttributeChanged(mContent, aAttribute, NS_STYLE_HINT_UNKNOWN);
     }
   }
   return result;
@@ -1241,7 +1241,7 @@ nsGenericHTMLElement::SetAttribute(nsIAtom* aAttribute,
       NS_RELEASE(sheet);
     }
     if (aNotify) {
-      mDocument->AttributeChanged(mContent, aAttribute);
+      mDocument->AttributeChanged(mContent, aAttribute, NS_STYLE_HINT_UNKNOWN);
     }
   }
   else {  // manage this ourselves and re-sync when we connect to doc
@@ -1287,7 +1287,7 @@ nsGenericHTMLElement::UnsetAttribute(nsIAtom* aAttribute, PRBool aNotify)
       NS_RELEASE(sheet);
     }
     if (aNotify) {
-      mDocument->AttributeChanged(mContent, aAttribute);
+      mDocument->AttributeChanged(mContent, aAttribute, NS_STYLE_HINT_UNKNOWN);
     }
   }
   else {  // manage this ourselves and re-sync when we connect to doc