Error on Line 28: expecting EOF found "}"

 public var bulletPrefab : Transform;
 public var bulletSpeed : float = 6000;
 var ammo : int = 60;
 var GunShot : AudioClip;
 var reload : AudioClip;
 var emptyClip : boolean = false;
 
 function Update () {
    if(Input.GetButtonDown("fire1")) {
    if(ammo > 0) {
    Shoot() ;
        } 
        else   {
            return;
        }       
    }
    if (input.GetKeyDown (KeyCode.R)     
    )if (emptyClip) ;
    Reload() ;            
   }      
   }  
          if (ammo > 0) {
         emptyClip = true;
 }
      else {
         emptyClip = false;
      }
               
  
 function Shoot()     {   
         var Bullet = Instantiate(BulletPrefab, transform.Find("BulletSpawn").position, transform.Find("BulletSpawn").rotation );
         bullet.Rigidbody.AddForce(transform.forward * bulletSpeed);
         audio.PlayOneShot (gunShot) ;
         ammo--;
 }                 
 
 function Reload() {
        audio.PlayOneShot(reload);    
        ammo = 60;
 }
 
 function onGUI()  {  
   GUI.label (Rect ( 0,0, 75, 25), "Ammo" + ammo) ;
   }  

Hi guys, I am new to Unity and Javascript. Please help me to fix this error, because I am already busy for several hours to find the problem...

Thanks in advance,

  Maurice