MouseLook.cs:case of JavaScript

 enum RotationAxes {MouseX, MouseY, MouseXandY};
 var axes : RotationAxes;
 private var MouseX = RotationAxes.MouseX;
 private var MouseY = RotationAxes.MouseY;
 private var MouseXandY = RotationAxes.MouseXandY;
 var sensitivityX : float = 15F;
 var sensitivityY : float = 15F;
 var minimumX : float = -360F;
 var maximumX : float = 360F;
 var minimumY : float= -60F;
 var maximumY : float = 60F;
 var rotationY : float = 0F;

 function Update ()
 {
     if (axes == MouseXandY)
     {
         var rotationX : float = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * sensitivityX;
         rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
         rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
         transform.localEulerAngles = Vector3(-rotationY, rotationX, 0);
     }
     
     else if (axes == MouseX)
     {
         transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityX, 0);
     }
     
     else
     {
         rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
         rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
         transform.localEulerAngles = new Vector3(-rotationY, transform.localEulerAngles.y, 0);
     }
 }
 
 function Start ()
 {
     // Make the rigid body not change rotation
     if (rigidbody)
         rigidbody.freezeRotation = true;
 }