So ive been wanting to make a "head bob" script for my fps character. I found one example of one on a website. It was in javaScript so i converted it to C# the best i could(im making the game for the flash platform so i dont want to deal with javaScript). I put it on my fps player's camera. However it has NO EFFECT on the camera. Can anyone tell me why this is? Here is my script:

using UnityEngine;
using System.Collections;

public class FPSHeadBob : MonoBehaviour {

private float timer = 0.0f;
public float bobbingSpeed = 0.18f;
public float bobbingAmount = 0.2f;
public float midpoint = 2.0f;

void Update () {
    float lpY = transform.localPosition.y;
    float waveslice = 0.0f;
    float horizontal = Input.GetAxis("Horizontal");
    float vertical = Input.GetAxis("Vertical");
    if(Mathf.Abs(horizontal) == 0 && Mathf.Abs(vertical) == 0)
    {
       timer = 0.0f;
    }
    else
    {
       waveslice = Mathf.Sin(timer);
       timer = timer + bobbingSpeed;
       if(timer > Mathf.PI * 2)
       {
         timer = timer - (Mathf.PI * 2);
       }
    }
    if(waveslice != 0)
    {
       float translateChange = waveslice * bobbingAmount;
       float totalAxes = Mathf.Abs(horizontal) + Mathf.Abs(vertical);
       totalAxes = Mathf.Clamp (totalAxes, 0.0f, 1.0f);
       translateChange = totalAxes * translateChange;
       lpY = midpoint + translateChange;
    }
    else
    {
       lpY = midpoint;
    }
}
}

Any help is appreciated.