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diff --git a/indra/llcharacter/llheadrotmotion.h b/indra/llcharacter/llheadrotmotion.h
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+/** 
+ * @file llheadrotmotion.h
+ * @brief Implementation of LLHeadRotMotion class.
+ *
+ * Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_LLHEADROTMOTION_H
+#define LL_LLHEADROTMOTION_H
+
+//-----------------------------------------------------------------------------
+// Header files
+//-----------------------------------------------------------------------------
+#include "llmotion.h"
+#include "llframetimer.h"
+
+#define MIN_REQUIRED_PIXEL_AREA_HEAD_ROT 500.f;
+#define MIN_REQUIRED_PIXEL_AREA_EYE 25000.f;
+
+//-----------------------------------------------------------------------------
+// class LLHeadRotMotion
+//-----------------------------------------------------------------------------
+class LLHeadRotMotion :
+	public LLMotion
+{
+public:
+	// Constructor
+	LLHeadRotMotion(const LLUUID &id);
+
+	// Destructor
+	virtual ~LLHeadRotMotion();
+
+public:
+	//-------------------------------------------------------------------------
+	// functions to support MotionController and MotionRegistry
+	//-------------------------------------------------------------------------
+
+	// static constructor
+	// all subclasses must implement such a function and register it
+	static LLMotion *create(const LLUUID &id) { return new LLHeadRotMotion(id); }
+
+public:
+	//-------------------------------------------------------------------------
+	// animation callbacks to be implemented by subclasses
+	//-------------------------------------------------------------------------
+
+	// motions must specify whether or not they loop
+	virtual BOOL getLoop() { return TRUE; }
+
+	// motions must report their total duration
+	virtual F32 getDuration() { return 0.0; }
+
+	// motions must report their "ease in" duration
+	virtual F32 getEaseInDuration() { return 1.f; }
+
+	// motions must report their "ease out" duration.
+	virtual F32 getEaseOutDuration() { return 1.f; }
+
+	// called to determine when a motion should be activated/deactivated based on avatar pixel coverage
+	virtual F32 getMinPixelArea() { return MIN_REQUIRED_PIXEL_AREA_HEAD_ROT; }
+
+	// motions must report their priority
+	virtual LLJoint::JointPriority getPriority() { return LLJoint::MEDIUM_PRIORITY; }
+
+	virtual LLMotionBlendType getBlendType() { return NORMAL_BLEND; }
+
+	// run-time (post constructor) initialization,
+	// called after parameters have been set
+	// must return true to indicate success and be available for activation
+	virtual LLMotionInitStatus onInitialize(LLCharacter *character);
+
+	// called when a motion is activated
+	// must return TRUE to indicate success, or else
+	// it will be deactivated
+	virtual BOOL onActivate();
+
+	// called per time step
+	// must return TRUE while it is active, and
+	// must return FALSE when the motion is completed.
+	virtual BOOL onUpdate(F32 time, U8* joint_mask);
+
+	// called when a motion is deactivated
+	virtual void onDeactivate();
+
+public:
+	//-------------------------------------------------------------------------
+	// joint states to be animated
+	//-------------------------------------------------------------------------
+	LLCharacter			*mCharacter;
+
+	LLJoint				*mTorsoJoint;
+	LLJoint				*mHeadJoint;
+	LLJoint				*mRootJoint;
+	LLJoint				*mPelvisJoint;
+
+	LLJointState		mTorsoState;
+	LLJointState		mNeckState;
+	LLJointState		mHeadState;
+
+	LLQuaternion		mLastHeadRot;
+};
+
+//-----------------------------------------------------------------------------
+// class LLEyeMotion
+//-----------------------------------------------------------------------------
+class LLEyeMotion :
+	public LLMotion
+{
+public:
+	// Constructor
+	LLEyeMotion(const LLUUID &id);
+
+	// Destructor
+	virtual ~LLEyeMotion();
+
+public:
+	//-------------------------------------------------------------------------
+	// functions to support MotionController and MotionRegistry
+	//-------------------------------------------------------------------------
+
+	// static constructor
+	// all subclasses must implement such a function and register it
+	static LLMotion *create( const LLUUID &id) { return new LLEyeMotion(id); }
+
+public:
+	//-------------------------------------------------------------------------
+	// animation callbacks to be implemented by subclasses
+	//-------------------------------------------------------------------------
+
+	// motions must specify whether or not they loop
+	virtual BOOL getLoop() { return TRUE; }
+
+	// motions must report their total duration
+	virtual F32 getDuration() { return 0.0; }
+
+	// motions must report their "ease in" duration
+	virtual F32 getEaseInDuration() { return 0.5f; }
+
+	// motions must report their "ease out" duration.
+	virtual F32 getEaseOutDuration() { return 0.5f; }
+
+	// called to determine when a motion should be activated/deactivated based on avatar pixel coverage
+	virtual F32 getMinPixelArea() { return MIN_REQUIRED_PIXEL_AREA_EYE; }
+
+	// motions must report their priority
+	virtual LLJoint::JointPriority getPriority() { return LLJoint::MEDIUM_PRIORITY; }
+
+	virtual LLMotionBlendType getBlendType() { return NORMAL_BLEND; }
+
+	// run-time (post constructor) initialization,
+	// called after parameters have been set
+	// must return true to indicate success and be available for activation
+	virtual LLMotionInitStatus onInitialize(LLCharacter *character);
+
+	// called when a motion is activated
+	// must return TRUE to indicate success, or else
+	// it will be deactivated
+	virtual BOOL onActivate();
+
+	// called per time step
+	// must return TRUE while it is active, and
+	// must return FALSE when the motion is completed.
+	virtual BOOL onUpdate(F32 time, U8* joint_mask);
+
+	// called when a motion is deactivated
+	virtual void onDeactivate();
+
+public:
+	//-------------------------------------------------------------------------
+	// joint states to be animated
+	//-------------------------------------------------------------------------
+	LLCharacter			*mCharacter;
+
+	LLJoint				*mHeadJoint;
+	LLJointState		mLeftEyeState;
+	LLJointState		mRightEyeState;
+
+	LLFrameTimer		mEyeJitterTimer;
+	F32					mEyeJitterTime;
+	F32					mEyeJitterYaw;
+	F32					mEyeJitterPitch;
+	F32					mEyeLookAwayTime;
+	F32					mEyeLookAwayYaw;
+	F32					mEyeLookAwayPitch;
+
+	// eye blinking
+	LLFrameTimer		mEyeBlinkTimer;
+	F32					mEyeBlinkTime;
+	BOOL				mEyesClosed;
+};
+
+#endif // LL_LLHEADROTMOTION_H
+