Hide Object

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function Update() {

    var hit: RaycastHit;
    var forward = transform.TransformDirection (Vector3.forward);

    if (Physics.Raycast (transform.position, forward, hit)) {

        if(hit.collider.CompareTag("hideObject")){

            Debug.Log("hit");
            o = hit.collider.gameObject;
            o.renderer.material.color.a = 0.2;
    }
    else {
        var hides : GameObject[];
        hides = GameObject.FindGameObjectsWithTag("hideObject");

    // Iterate through them and turn each one off
    for (var hide : GameObject in hides) {
        hide.renderer.material.color.a = 1.0;;
    }
}

}