diff --git a/extensions/CCBReader/CCBAnimationManager.cpp b/extensions/CCBReader/CCBAnimationManager.cpp
index bd30b0a168..7526e4d0a3 100644
--- a/extensions/CCBReader/CCBAnimationManager.cpp
+++ b/extensions/CCBReader/CCBAnimationManager.cpp
@@ -262,6 +262,14 @@ CCBSequence* CCBAnimationManager::getSequence(int nSequenceId)
     return NULL;
 }
 
+float CCBAnimationManager::getSequenceDuration(const char *pSequenceName)
+{
+    int id = getSequenceId(pSequenceName);
+    if (id != -1)
+        return getSequence(id)->getDuration();
+    return 0;
+}
+
 
 void CCBAnimationManager::moveAnimationsFromNode(Node* fromNode, Node* toNode) {
 
diff --git a/extensions/CCBReader/CCBAnimationManager.h b/extensions/CCBReader/CCBAnimationManager.h
index d630ae545d..b43276ff40 100644
--- a/extensions/CCBReader/CCBAnimationManager.h
+++ b/extensions/CCBReader/CCBAnimationManager.h
@@ -87,10 +87,15 @@ public:
 
     Object* actionForCallbackChannel(CCBSequenceProperty* channel);
     Object* actionForSoundChannel(CCBSequenceProperty* channel);
+
+	// return -1 if timeline not exsit
+    int getSequenceId(const char* pSequenceName);
+    
+    // get timeline duration
+    float getSequenceDuration(const char* pSequenceName);
     
 private:
     Object* getBaseValue(Node *pNode, const char* propName);
-    int getSequenceId(const char* pSequenceName);
     CCBSequence* getSequence(int nSequenceId);
     ActionInterval* getAction(CCBKeyframe *pKeyframe0, CCBKeyframe *pKeyframe1, const char *propName, Node *pNode);
     void setAnimatedProperty(const char *propName, Node *pNode, Object *pValue, float fTweenDuraion);