how to reset time

i've written very little local high score script with PlayerPrefab and when i restart Level time doesnt reset. there is the script and if you need you can use ;)

 var points : int;
 var targetGuiText : GUIText;
 var targetGuiText1 : GUIText;
 var Renderer;
 private var gldepth = -0.5;
 private var startTime = 0.1;
 private var tris = 0;
 private var verts = 0;
 private var savedTimeScale:float;
 private var pauseFilter;
 private var score : int;
 
 function OnTriggerEnter(hit : Collider)
 {
  if(hit.gameObject.tag == "Finish")
  {
  targetGuiText.enabled = true;
  targetGuiText1.enabled = true;
     savedTimeScale = Time.timeScale;
     Time.timeScale = 0;
     AudioListener.pause = true;
     if (pauseFilter) pauseFilter.enabled = true;
  Finish();
  }
 }
 function Start() {
  targetGuiText.enabled = false;
  targetGuiText1.enabled = false;
 }
 
 function Update()
 {
  targetGuiText.text = ("Highest Score: " + PlayerPrefs.GetInt("points"));
  targetGuiText1.text = ("My Score is: " +points /2);
   if(Input.GetKey(KeyCode.Home)){
 Application.LoadLevel(Application.loadedLevel);
 }
  print("I finished in: " +points); 
  Time.timeScale = 1;
 }
 function Finish(){
 //Save this high score da ar damseivebelis dedas sheveci me :D 
 if(points > PlayerPrefs.GetInt("points")){
 PlayerPrefs.SetInt("points", points);
 }
  if(Time.time <= 50) //if you make it before 90 seconds
  {
    points += 60; //add points
  }
  if(Time.time <= 40) //if you make it before 90 seconds
  {
    points += 70; //add points
  }
  if(Time.time <= 30) //if you make it before 90 seconds
  {
    points += 80; //add points
  }
  if(Time.time <= 20) //if you make it before 90 seconds
  {
   points += 90; //add points
  }
  if(Time.time <= 10) //if you made it before 50 seconds
  {
   points += 100; //add points
  } 
 }