Camera Script remove a part.

Hello Unity Members. I found a free script online( i know its bad and might be illegal but thats the only thing i found online).Anyways, it's a camera script that rotates camera around player(target) when you click a mouse button. Left click rotates the camera without rotating the target and Right click rotates the camera and the player. That's my problem. I want the right click to be like left click. To not to change target's rotation. I edited the script but nothing seems to work. I might be very rookie with those camera things. Can someone help me ? Again, i want: when i right click to rotate the camera keep target's rotation the same and not rotate with the camera.

 var target:Transform;                                                   // Target to follow
 var targetHeight = 1.7;                                                 // Vertical offset adjustment
 var distance = 12.0;                                                    // Default Distance
 var offsetFromWall = 0.1;                                               // Bring camera away from any colliding objects
 var maxDistance = 20;                                           // Maximum zoom Distance
 var minDistance = 0.6;                                          // Minimum zoom Distance
 var xSpeed = 200.0;                                                     // Orbit speed (Left/Right)
 var ySpeed = 200.0;                                                     // Orbit speed (Up/Down)
 var yMinLimit = -80;                                                    // Looking up limit
 var yMaxLimit = 80;                                                     // Looking down limit
 var zoomRate = 40;                                                      // Zoom Speed
 var rotationDampening = 3.0;                            // Auto Rotation speed (higher = faster)
 var zoomDampening = 5.0;                                        // Auto Zoom speed (Higher = faster)
 var collisionLayers:LayerMask = -1;             // What the camera will collide with
 var lockToRearOfTarget = false;                         // Lock camera to rear of target
 var allowMouseInputX = true;                            // Allow player to control camera angle on the X axis (Left/Right)
 var allowMouseInputY = true;                            
  
 private var xDeg = 0.0;
 private var yDeg = 0.0;
 private var currentDistance;
 private var desiredDistance;
 private var correctedDistance;
 private var rotateBehind = false;
  
  
 @script AddComponentMenu("Camera-Control/Third Person Camera Orbit (MMORPG Like)")
  
 function Start ()
 {
         var angles:Vector3 = transform.eulerAngles;
         xDeg = angles.x;
         yDeg = angles.y;
         currentDistance = distance;
         desiredDistance = distance;
         correctedDistance = distance;
 
  }
 
 function LateUpdate ()
 {
         if (!target)
                 return;
        
         var vTargetOffset:Vector3;
        
 
         if (GUIUtility.hotControl == 0)
         {
                         if (allowMouseInputX)
                                 xDeg += Input.GetAxis ("Mouse X") * xSpeed * 0.02;
 
                         if (allowMouseInputY)
                                 yDeg -= Input.GetAxis ("Mouse Y") * ySpeed * 0.02;   
         }
         yDeg = ClampAngle (yDeg, yMinLimit, yMaxLimit);
 
         var rotation:Quaternion = Quaternion.Euler (yDeg, xDeg, 0);
 
         desiredDistance -= Input.GetAxis ("Mouse ScrollWheel") * Time.deltaTime * zoomRate * Mathf.Abs (desiredDistance);
         desiredDistance = Mathf.Clamp (desiredDistance, minDistance, maxDistance);
         correctedDistance = desiredDistance;
 
         vTargetOffset = Vector3 (0, -targetHeight, 0);
         var position:Vector3 = target.position - (rotation * Vector3.forward * desiredDistance + vTargetOffset);
  
         var collisionHit:RaycastHit;
         var trueTargetPosition:Vector3 = Vector3 (target.position.x, target.position.y + targetHeight, target.position.z);
  
         var isCorrected = false;
         if (Physics.Linecast (trueTargetPosition, position, collisionHit, collisionLayers))
         {
                 correctedDistance = Vector3.Distance (trueTargetPosition, collisionHit.point) - offsetFromWall;
                 isCorrected = true;
         }
  
         currentDistance = !isCorrected || correctedDistance > currentDistance ? Mathf.Lerp (currentDistance, correctedDistance, Time.deltaTime * zoomDampening) : correctedDistance;
 
         currentDistance = Mathf.Clamp (currentDistance, minDistance, maxDistance);
 
         position = target.position - (rotation * Vector3.forward * currentDistance + vTargetOffset);
    
         transform.rotation = rotation;
         transform.position = position;
 }
  
 function RotateBehindTarget()
 {
 }
  
  
 static function ClampAngle (angle : float, min : float, max : float)
 {
    if (angle < -360){
       angle += 360;
       Debug.Log(angle);  }
    if (angle > 360)
       angle -= 360;
    return Mathf.Clamp (angle, min, max);
 }
 

Thanks alot!