function ExportGO(go:GameObject, froot:String):GameObject
    {
        var path : String = froot + "/" + go.name ;
        var orig : GameObject = Instantiate (go.gameObject,
        go.gameObject.transform.position, go.gameObject.transform.rotation);

        var prefab : Object = EditorUtility.CreateEmptyPrefab( path + ".prefab");
        AssetDatabase.Refresh();
        EditorUtility.ReplacePrefab(orig, prefab as UnityEngine.Object);
        AssetDatabase.Refresh();
        DestroyImmediate(orig as GameObject);
        DestroyImmediate(go.gameObject as GameObject);
        var clone : GameObject = EditorUtility.InstantiatePrefab(prefab as UnityEngine.Object) as GameObject;
        Debug.Log(clone);
        //Remove the tiles, irrelevant
        //FileUtil.DeleteFileOrDirectory("Assets/BatchingToolsTemp");
        AssetDatabase.Refresh();
        AssetDatabase.SaveAssets();
        return clone;
    }