diff --git a/mozilla/content/html/document/src/nsHTMLContentSink.cpp b/mozilla/content/html/document/src/nsHTMLContentSink.cpp
index 777044b4a55..356464a9843 100644
--- a/mozilla/content/html/document/src/nsHTMLContentSink.cpp
+++ b/mozilla/content/html/document/src/nsHTMLContentSink.cpp
@@ -628,6 +628,18 @@ HTMLContentSink::OpenContainer(const nsIParserNode& aNode)
     }
     return 0;
 
+  case eHTMLTag_applet:
+    rv = NS_NewHTMLApplet(&container, atom);
+    break;
+
+  case eHTMLTag_object:
+    rv = NS_NewHTMLEmbed(&container, atom);
+    break;
+
+  case eHTMLTag_embed:
+    rv = NS_NewHTMLObject(&container, atom);
+    break;
+
   case eHTMLTag_table:
     rv = NS_NewTablePart(&container, atom);
     mInMonolithicContainer++;
diff --git a/mozilla/layout/html/document/src/nsHTMLContentSink.cpp b/mozilla/layout/html/document/src/nsHTMLContentSink.cpp
index 777044b4a55..356464a9843 100644
--- a/mozilla/layout/html/document/src/nsHTMLContentSink.cpp
+++ b/mozilla/layout/html/document/src/nsHTMLContentSink.cpp
@@ -628,6 +628,18 @@ HTMLContentSink::OpenContainer(const nsIParserNode& aNode)
     }
     return 0;
 
+  case eHTMLTag_applet:
+    rv = NS_NewHTMLApplet(&container, atom);
+    break;
+
+  case eHTMLTag_object:
+    rv = NS_NewHTMLEmbed(&container, atom);
+    break;
+
+  case eHTMLTag_embed:
+    rv = NS_NewHTMLObject(&container, atom);
+    break;
+
   case eHTMLTag_table:
     rv = NS_NewTablePart(&container, atom);
     mInMonolithicContainer++;