how can you make an instantiated game object appear in the position where the mouse was clicked?

var shine : GameObject; var clone : GameObject; //var position : Vector3; function Start () {

}

function Update () {

 //if(postion: Vector3(0,0,0))
 if(Input.GetMouseButtonDown(0))
 {
     Debug.Log("Pressed left click.");
     Instantiate (shine, Input.mousePosition,Quaternion.identity);
     //Invoke ("Spawn", Random.Range( 0, 1));
     
     Destroy(GameObject.Find("Shine(Clone)"), 3);
     
 }
 if(Input.GetMouseButtonDown(1))
 {
     Debug.Log("Pressed right click.");
 }
 if(Input.GetMouseButtonDown(2))
 {
     Debug.Log("Pressed middle click.");
 }
 

}