Where Is The Error

 Assets/enemy1.js(51,2): UCE0001: ';' expected. Insert a semicolon at the end.
 Assets/enemy1.js(51,2): UCE0001: ';' expected. Insert a semicolon at the end.
 Assets/enemy1.js(51,1): BCE0043: Unexpected token: ..
 Assets/enemy1.js(21,1): BCE0043: Unexpected token: ..
 Assets/enemy1.js(16,1): BCE0043: Unexpected token: ..

where are these errors in this script

 #pragma strict
 var target : Transform; //the enemy's target
 var moveSpeed = 3; //move speed
 var rotationSpeed = 3; //speed of turning
 var attackThreshold = 3; // distance within which to attack
 var chaseThreshold = 10; // distance within which to start chasing
 var giveUpThreshold = 20; // distance beyond which AI gives up
 var attackRepeatTime = 1; // delay between attacks when within range
  
 private var chasing = false;
 .private var attackTime = Time.time;
  
 var myTransform : Transform; //current transform data of this enemy
  
 function Awake()
 .{
     myTransform = transform; //cache transform data for easy access/preformance
 }
  
 function Start()
 .{
      target = GameObject.FindWithTag("Player").transform; //target the player
 }
  
 function Update () {
  
     // check distance to target every frame:
     var distance = (target.position - myTransform.position).magnitude;
  
     if (chasing) {
  
         //rotate to look at the player
         myTransform.rotation = Quaternion.Slerp(myTransform.rotation,
         Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);
  
         //move towards the player
         myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
  
         // give up, if too far away from target:
         if (distance > giveUpThreshold) {
                     chasing = false;
         }
  
         // attack, if close enough, and if time is OK:
         if (distance < attackThreshold && Time.time > attackTime) {
             // Attack! (call whatever attack function you like here)
             attackTime = Time.time + attackRepeatTime;
         }
  
     } else {
 .        // not currently chasing.:
  
         // start chasing if target comes close enough
         if (distance < chaseThreshold) {
             chasing = true;
         }
     }
 }