How to fix this error, source included.

Unity is giving me the error: "Assets/SnakeMovement.js(15,28): BCE0044: expecting :, found ';'." In my code, it looks like this:

 #pragma strict
 var Rats : GameObject;
 private var NumberofRats : int;
 var SnakeBody : GameObject;
 private var LastPiece : GameObject;
 var lives : int;
 var ShowHighscore : boolean;
 
 function Start () 
 {
     ShowHighscore = false;
     var i : int = 0;
     while(i<10);
     {
         PlaceRats();
         i++;
     }
     Rats = 0;
     LastPiece = GameObject;
     if(PlayerPrefs.GetInt("Rats")) 
     {
         PlayerPrefs.GetInt("Rats", 1);
     }
     if(PlayerPrefs.GetInt("lives")) 
     {
         if(PlayerPrefs.GetInt("lives") i=0) 
         {
             PlayerPrefs.GetInt("lives", 3);
         }
     }
     lives = PlayerPrefs.GetInt("lives");
 }
 
 function Update () 
 {
     Transform.Translate(Vector3(0, 0, 0.06));
     if(Input.GetKeyUp(KeyCode.RightArrow))
     {
         Transform.Rotate(Vector3(0, 90, 0));
     }
     else(if(Input.GetKeyUp(KeyCode.LeftArrow))
     {
         Transform.Rotate(Vector3(0, -90, 0));
     }
     if((Time.time/10) < 0.001)
     {
         PlaceRats ();
     }
 }
 
 function PlaceRats()
 {
     Rats:GameObject = Instantiate(Rats, Vector3(Random.Range(-25,25), 2.2, Random.Range(-25,25)), Quaternion.identity);
     NumberofRats.name = "Rats";
 }
 
 function OnTriggerEnter(col:Collider)
 {
     if(col.GameObject. name == "Food")
     }
         Rats++;
         addBodyPart();
         Destroy(col.GameObject);
         PlaceRats();
     }
     if(col.GameObject.name == "SnakeBody")
     {
         Application.LoadLevel(Application.LoadLevel);
         var oldLives = PlayerPrefs.GetInt("lives");
         PlayerPrefs.SetInt("lives", oldLives-1);
     }
 }
 function addBodyPart()
 {
     var ExtraBodyPart : GameObject = Instantiate(SnakeBody, transform.position-(Rigidbody.velocity*100), Quaternion.identity);
     ExtraBodyPart.name = "SnakeBody";
     ExtraBodyPart.GetComponent<SmoothFollow().target = ExtraBodyPart;
     ExtraBodyPart = SnakeBody;
 }

Could you guys tell me what I'm doing wrong?