This is the script to how to do it :
#pragma strict
var point : Transform;
var obj : Transform;
var destpoint : Transform;
function Start () {
}
function Update () {
}
function OnMouseDown () {
var x = Instantiate (obj, point.position, Quaternion.identity);
yield MoveObject(x, point.position, destpoint.position, 3.0);
}
function MoveObject (thisTransform : Transform, startPos : Vector3, endPos : Vector3, time : float) {
var i = 0.0;
var rate = 1.0/time;
while (i < 1.0) {
i += Time.deltaTime * rate;
thisTransform.position = Vector3.Lerp(startPos, endPos, i);
yield;
}
}