diff --git a/mozilla/content/base/src/nsDocument.cpp b/mozilla/content/base/src/nsDocument.cpp
index 7b65c1a2c00..6ff706d01b3 100644
--- a/mozilla/content/base/src/nsDocument.cpp
+++ b/mozilla/content/base/src/nsDocument.cpp
@@ -2369,6 +2369,19 @@ nsDocument::SetBoxObjectFor(nsIDOMElement* aElement, nsIBoxObject* aBoxObject)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsDocument::GetDir(nsAWritableString& aDirection)
+{
+  aDirection.Assign(NS_LITERAL_STRING("ltr") );
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDocument::SetDir(const nsAReadableString& aDirection)
+{
+  return NS_OK;
+}
+
 //
 // nsIDOMNode methods
 //
diff --git a/mozilla/content/base/src/nsDocument.h b/mozilla/content/base/src/nsDocument.h
index 978bd3fdce6..51707b114e4 100644
--- a/mozilla/content/base/src/nsDocument.h
+++ b/mozilla/content/base/src/nsDocument.h
@@ -371,6 +371,8 @@ public:
   NS_IMETHOD    GetPlugins(nsIDOMPluginArray** aPlugins);
   NS_IMETHOD    GetBoxObjectFor(nsIDOMElement* aElement, nsIBoxObject** aResult);
   NS_IMETHOD    SetBoxObjectFor(nsIDOMElement* aElement, nsIBoxObject* aBoxObject);
+  NS_IMETHOD    GetDir(nsAWritableString& aDirection);
+  NS_IMETHOD    SetDir(const nsAReadableString& aDirection);
  
   // nsIDOMNode interface
   NS_DECL_IDOMNODE
diff --git a/mozilla/content/xul/document/src/nsXULDocument.cpp b/mozilla/content/xul/document/src/nsXULDocument.cpp
index 36286de4c05..a6e65af0547 100644
--- a/mozilla/content/xul/document/src/nsXULDocument.cpp
+++ b/mozilla/content/xul/document/src/nsXULDocument.cpp
@@ -2932,6 +2932,19 @@ nsXULDocument::GetPlugins(nsIDOMPluginArray** aPlugins)
     return NS_ERROR_NOT_IMPLEMENTED;
 }
 
+NS_IMETHODIMP
+nsXULDocument::GetDir(nsAWritableString& aDirection)
+{
+  aDirection.Assign(NS_LITERAL_STRING("ltr") );
+  return NS_OK;
+}
+
+NS_IMETHODIMP    
+nsXULDocument::SetDir(const nsAReadableString& aDirection)
+{
+  return NS_OK;
+}
+
 //----------------------------------------------------------------------
 //
 // nsIDOMXULDocument interface
diff --git a/mozilla/dom/public/coreDom/nsIDOMNSDocument.h b/mozilla/dom/public/coreDom/nsIDOMNSDocument.h
index 98ff113ecaf..30edc745f88 100644
--- a/mozilla/dom/public/coreDom/nsIDOMNSDocument.h
+++ b/mozilla/dom/public/coreDom/nsIDOMNSDocument.h
@@ -44,6 +44,9 @@ public:
 
   NS_IMETHOD    GetCharacterSet(nsAWritableString& aCharacterSet)=0;
 
+  NS_IMETHOD    GetDir(nsAWritableString& aDir)=0;
+  NS_IMETHOD    SetDir(const nsAReadableString& aDir)=0;
+
   NS_IMETHOD    GetPlugins(nsIDOMPluginArray** aPlugins)=0;
 
   NS_IMETHOD    GetLocation(jsval* aLocation)=0;
@@ -61,6 +64,8 @@ public:
 
 #define NS_DECL_IDOMNSDOCUMENT   \
   NS_IMETHOD    GetCharacterSet(nsAWritableString& aCharacterSet);  \
+  NS_IMETHOD    GetDir(nsAWritableString& aDir);  \
+  NS_IMETHOD    SetDir(const nsAReadableString& aDir);  \
   NS_IMETHOD    GetPlugins(nsIDOMPluginArray** aPlugins);  \
   NS_IMETHOD    GetLocation(jsval* aLocation);  \
   NS_IMETHOD    SetLocation(jsval aLocation);  \
@@ -73,6 +78,8 @@ public:
 
 #define NS_FORWARD_IDOMNSDOCUMENT(_to)  \
   NS_IMETHOD    GetCharacterSet(nsAWritableString& aCharacterSet) { return _to GetCharacterSet(aCharacterSet); } \
+  NS_IMETHOD    GetDir(nsAWritableString& aDir);  \
+  NS_IMETHOD    SetDir(const nsAReadableString& aDir);  \
   NS_IMETHOD    GetPlugins(nsIDOMPluginArray** aPlugins) { return _to GetPlugins(aPlugins); } \
   NS_IMETHOD    GetLocation(jsval* aLocation) { return _to GetLocation(aLocation); } \
   NS_IMETHOD    SetLocation(jsval aLocation) { return _to SetLocation(aLocation); } \
diff --git a/mozilla/dom/public/idl/coreDom/Document.idl b/mozilla/dom/public/idl/coreDom/Document.idl
index 8701bad059c..f48f4380438 100644
--- a/mozilla/dom/public/idl/coreDom/Document.idl
+++ b/mozilla/dom/public/idl/coreDom/Document.idl
@@ -91,6 +91,7 @@ interface NSDocument {
   { 0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32} } */
 
    readonly attribute DOMString characterSet;
+   attribute DOMString dir;
    readonly attribute PluginArray plugins;
 
    attribute jsval location;
diff --git a/mozilla/dom/public/nsDOMPropEnums.h b/mozilla/dom/public/nsDOMPropEnums.h
index ee75a18cf6c..79760fcb0ff 100644
--- a/mozilla/dom/public/nsDOMPropEnums.h
+++ b/mozilla/dom/public/nsDOMPropEnums.h
@@ -768,6 +768,7 @@ enum nsDOMProp {
     NS_DOM_PROP_NOTATION_SYSTEMID, 
     NS_DOM_PROP_NSDOCUMENT_CHARACTERSET, 
     NS_DOM_PROP_NSDOCUMENT_CREATERANGE,
+    NS_DOM_PROP_NSDOCUMENT_DIR,
     NS_DOM_PROP_NSDOCUMENT_GETBOXOBJECTFOR,
     NS_DOM_PROP_NSDOCUMENT_LOAD,
     NS_DOM_PROP_NSDOCUMENT_LOCATION,
diff --git a/mozilla/dom/public/nsDOMPropNames.h b/mozilla/dom/public/nsDOMPropNames.h
index 34eccfc8d98..3e7a8fb3ad2 100644
--- a/mozilla/dom/public/nsDOMPropNames.h
+++ b/mozilla/dom/public/nsDOMPropNames.h
@@ -766,6 +766,7 @@
     "notation.systemid", \
     "nsdocument.characterset", \
     "nsdocument.createrange", \
+    "nsdocument.dir", \
     "nsdocument.getboxobjectfor", \
     "nsdocument.load", \
     "nsdocument.location", \
diff --git a/mozilla/dom/src/coreDOM/nsJSDocument.cpp b/mozilla/dom/src/coreDOM/nsJSDocument.cpp
index a87a83b072f..9d267f0485b 100644
--- a/mozilla/dom/src/coreDOM/nsJSDocument.cpp
+++ b/mozilla/dom/src/coreDOM/nsJSDocument.cpp
@@ -102,8 +102,9 @@ enum Document_slots {
   DOCUMENTSTYLE_STYLESHEETS = -4,
   DOCUMENTVIEW_DEFAULTVIEW = -5,
   NSDOCUMENT_CHARACTERSET = -6,
-  NSDOCUMENT_PLUGINS = -7,
-  NSDOCUMENT_LOCATION = -8
+  NSDOCUMENT_DIR = -7,
+  NSDOCUMENT_PLUGINS = -8,
+  NSDOCUMENT_LOCATION = -9
 };
 
 /***********************************************************************/
@@ -224,6 +225,25 @@ GetDocumentProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
         }
         break;
       }
+      case NSDOCUMENT_DIR:
+      {
+        rv = secMan->CheckScriptAccess(cx, obj, NS_DOM_PROP_NSDOCUMENT_DIR, PR_FALSE);
+        if (NS_SUCCEEDED(rv)) {
+          nsAutoString prop;
+          nsIDOMNSDocument* b;
+          if (NS_OK == a->QueryInterface(kINSDocumentIID, (void **)&b)) {
+            rv = b->GetDir(prop);
+            if(NS_SUCCEEDED(rv)) {
+            nsJSUtils::nsConvertStringToJSVal(prop, cx, vp);
+            }
+            NS_RELEASE(b);
+          }
+          else {
+            rv = NS_ERROR_DOM_WRONG_TYPE_ERR;
+          }
+        }
+        break;
+      }
       case NSDOCUMENT_PLUGINS:
       {
         rv = secMan->CheckScriptAccess(cx, obj, NS_DOM_PROP_NSDOCUMENT_PLUGINS, PR_FALSE);
@@ -292,6 +312,26 @@ SetDocumentProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
     if (!secMan)
         return PR_FALSE;
     switch(JSVAL_TO_INT(id)) {
+      case NSDOCUMENT_DIR:
+      {
+        rv = secMan->CheckScriptAccess(cx, obj, NS_DOM_PROP_NSDOCUMENT_DIR, PR_TRUE);
+        if (NS_SUCCEEDED(rv)) {
+          nsAutoString prop;
+          nsJSUtils::nsConvertJSValToString(prop, cx, *vp);
+      
+          nsIDOMNSDocument *b;
+          if (NS_OK == a->QueryInterface(kINSDocumentIID, (void **)&b)) {
+            b->SetDir(prop);
+            NS_RELEASE(b);
+          }
+          else {
+             
+            rv = NS_ERROR_DOM_WRONG_TYPE_ERR;
+          }
+          
+        }
+        break;
+      }
       case NSDOCUMENT_LOCATION:
       {
         rv = secMan->CheckScriptAccess(cx, obj, NS_DOM_PROP_NSDOCUMENT_LOCATION, PR_TRUE);
@@ -337,6 +377,7 @@ static JSPropertySpec DocumentProperties[] =
   {"styleSheets",    DOCUMENTSTYLE_STYLESHEETS,    JSPROP_ENUMERATE | JSPROP_READONLY},
   {"defaultView",    DOCUMENTVIEW_DEFAULTVIEW,    JSPROP_ENUMERATE | JSPROP_READONLY},
   {"characterSet",    NSDOCUMENT_CHARACTERSET,    JSPROP_ENUMERATE | JSPROP_READONLY},
+  {"dir",    NSDOCUMENT_DIR,    JSPROP_ENUMERATE},
   {"plugins",    NSDOCUMENT_PLUGINS,    JSPROP_ENUMERATE | JSPROP_READONLY},
   {"location",    NSDOCUMENT_LOCATION,    JSPROP_ENUMERATE},
   {0}