Usually I'm not much for answering these loose type of questions, we don't know what your world looks like and what the rules for the game world is. You haven't given us anything to work with actually to help you out.

The easiest way to handle AI is to use enums of their behavior. Here's an example that should fit your needs (put this on obj_106):

#pragma strict

enum TELEPORT {
 ToPlayer,
 AwayFromPlayer
}

var player : Transform;
private var myTransform : Transform;

function Start () {
 myTransform = transform;
 if (player==null) player=GameObject.FindGameObjectWithTag("Player").transform;
 InvokeRepeating("CycleExample", 2.0, 2.0);
}

//This function shows how to init the repositioning
private var exampleBool : boolean = false;
function CycleExample () {
 if (exampleBool) {
 Teleport(TELEPORT.ToPlayer);
 } else {
 Teleport(TELEPORT.AwayFromPlayer);
 }
 exampleBool=!exampleBool;
}

function Teleport (tel : TELEPORT) {
 switch (tel) {
 case TELEPORT.ToPlayer:
 myTransform.position = Reposition(.5);
 if (Random.Range(0,2)==1) {
 //Attack the player (50% chance)
 yield WaitForSeconds(Random.Range(0.5, 1.0));
 Attack();
 } else {
 //Dissapear (50% chance)
 yield WaitForSeconds(Random.Range(0.5, 1.0));
 Flee();
 }
 break;
 case TELEPORT.AwayFromPlayer:
 myTransform.position = Reposition(20.0);
 break;
 }
}

function Reposition (range : float) : Vector3 {
 Debug.Log(range);
 var angle : float = Random.Range(.0,180.0);
 var newPos : Vector3 = Vector3(Mathf.Cos(angle), 0, Mathf.Sin(angle)) * range;
 return newPos;
}

function Attack () {
 //Play attack animation etc.
}

function Flee () {
 //Play flee animation etc.
 Teleport(TELEPORT.AwayFromPlayer);
}

The most important function here is the Reposition() which takes a range and returns a Vector3. This doesn't handle the positioning in Y-axis as you haven't given any information of the rules of your game. If this is a terrain then you could use a raycast in the downward direction from where newPos inside Reposition() is calculated.

Good luck!