Raycast shooting in the middle of the screen

I need help with my raycast shooting, it isn't shooting in the middle of my cross but my script should have it shooting in the middle of my screen. Please help

Shooting script

 #pragma strict
 
 var damage:float = 100;
 var range = 8000.0;
 var force = 10.0;
 var muzzleFlash : Renderer;
 var muzzleLight : Light;
 
 var SniperMenu: GUIStyle;
 var ReloadMenu: GUIStyle;
 
 var ReloadWarning = false;
 
 var cameraTransform: Transform;
 
 static var _SniperCanReload = false;
 
 var clipSize: int = 5;
 var bulletsInClip = 5;
 var bulletsLeft = 15;
 static var allowfire : boolean = true;
 
 function Start (){
 muzzleFlash.enabled = false;
 muzzleLight.enabled = false;
 }
 
 function Update () {
 if(Input.GetMouseButtonUp(0)){
 if(bulletsInClip >= 1){
 if(allowfire == true){
 fire();
 }
 }
 }
 if (Input.GetKeyDown (KeyCode.R)){
 if(bulletsInClip == 0){
 if(bulletsLeft >= 5){
 Reload();
 }
 }
 }
 if(bulletsInClip == 0){
 if(bulletsLeft >= 5){
 ReloadWarning = true;
 }
 } else {
 ReloadWarning = false;
 }
 if(bulletsInClip == 0){
 if(bulletsLeft >= 5){
 _SniperCanReload = true;
 }
 } else {
 _SniperCanReload = false;
 }
 }
 
 function OnGUI() {
 if(ReloadWarning == true){
 GUI.Label (Rect (Screen.width / 2.2, Screen.height / 2.5, 200, 200), "Press R to reload.", ReloadMenu);
 }
 GUI.Label (Rect (10, 650, 350, 350), "Sniper", SniperMenu);
 GUI.Label (Rect (10, 700, 350, 350), bulletsInClip + " / " + bulletsLeft, SniperMenu);
 }
 
 function fire(){
 allowfire = false;
 audio.Play();
 bulletsInClip--;
         
 var direction = transform.TransformDirection(Vector3.forward);
 var $$anonymous$$t : RaycastHit;
 
 // Did we $$anonymous$$t anyt$$anonymous$$ng?
 if (Physics.Raycast (cameraTransform.position, cameraTransform.forward, $$anonymous$$t)) {
 Debug.DrawRay(transform.position, direction * range);
 // Apply a force to the rigidbody we $$anonymous$$t
 if ($$anonymous$$t.rigidbody)
 $$anonymous$$t.rigidbody.AddForceAtPosition(force * direction, $$anonymous$$t.point);
 $$anonymous$$t.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
 }
 
 muzzleFlash.renderer.enabled = true;
 muzzleLight.enabled = true;
 yield WaitForSeconds (0.04);
 muzzleFlash.renderer.enabled = false;
 muzzleLight.enabled = false;
 
 
 yield WaitForSeconds(0.1);
 allowfire = true;
 }
 
 function OnTriggerEnter($$anonymous$$t:Collider){
 if($$anonymous$$t.tag == "Enemy"){
 $$anonymous$$t.transform.SendMessage("Damage",damage);
 }
 }
 
 function Reload(){
 allowfire = false;
 yield WaitForSeconds (1);
 bulletsInClip = clipSize;
 bulletsLeft = (bulletsLeft - clipSize);
 yield WaitForSeconds (0.3);
 allowfire = true;
 }

Crosshair Script

 var crosshairTexture : Texture2D;
 var position : Rect;
  
 function Start()
 {
     position = Rect((Screen.width - crosshairTexture.width) / 2, (Screen.height - 
     crosshairTexture.height) /2, crosshairTexture.width, crosshairTexture.height);
 }
 
 function OnGUI()
 {
     GUI.DrawTexture(position, crosshairTexture);
 }