//replace Update method in your class with this one
    void Update()
    {
        //if mouse button (left hand side) pressed instantiate a raycast
        Ray        ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        RaycastHit hit;

        bool bHit = Physics.Raycast(ray, out hit);

        if (bHit)
        {
            if (hit.collider.gameObject.transform.parent)
            {
                if (hit.collider.gameObject.transform.parent.name == "MenuButton(Clone)")
                {
                    hit.collider.gameObject.GetComponent <MenuButtonScript>().coliding = true;
                }
                else if (hit.collider.gameObject.transform.parent.name == "DialogButton(Clone)")
                {
                    if (hit.collider.gameObject.GetComponent <DialogButtonScript>() != null)
                    {
                        hit.collider.gameObject.GetComponent <DialogButtonScript>().coliding = true;
                    }
                }
                else if (hit.collider.gameObject.transform.parent.name == "FinalScoreButton")
                {
                    hit.collider.gameObject.GetComponent <MenuButtonScript>().coliding = true;
                }
            }
        }

        if (Input.GetMouseButtonUp(0) && interactingItem != null)
        {
            Debug.Log(" up and not interacting ");
            interactingItem.EndMouseInteraction(this);
            interactingItem = null;
        }
        else if (Input.GetMouseButtonDown(0))
        {
            //create a ray cast and set it to the mouses cursor position in game
            ray = Camera.main.ScreenPointToRay(Input.mousePosition);


            bHit = Physics.Raycast(ray, out hit);
            if (bHit)
            {
                if (hit.collider.gameObject.transform.parent)
                {
                    if (hit.collider.gameObject.transform.parent.name == "MenuButton(Clone)")
                    {
                        hit.collider.gameObject.GetComponent <MenuButtonScript>().coliding = true;
                        hit.collider.gameObject.GetComponent <MenuButtonScript>().click    = true;
                    }


                    else if (hit.collider.gameObject.transform.parent.name == "DialogButton(Clone)")
                    {
                        Debug.Log("dialog buttons");
                        hit.collider.gameObject.GetComponent <DialogButtonScript>().coliding = true;
                        hit.collider.gameObject.GetComponent <DialogButtonScript>().click    = true;
                    }
                    else if (hit.collider.gameObject.transform.parent.name == "FinalScoreButton")
                    {
                        hit.collider.gameObject.GetComponent <MenuButtonScript>().coliding = true;
                        hit.collider.gameObject.GetComponent <MenuButtonScript>().click    = true;
                    }
                }
                if (hit.collider.gameObject.GetComponent <InteractableItem>() != null)
                {
                    interactingItem = hit.collider.gameObject.GetComponent <InteractableItem>();

                    Debug.Log("interacting " + interactingItem.isInteracting());
                    if (!interactingItem.isInteracting()) // this shouldn't happen that often...
                    {
                        interactingItem.BeginMouseInteraction(this);
                    }
                }
                else if (hit.collider.gameObject != null)
                {
                    Debug.Log("hit this object " + hit.collider.gameObject.name);
                }
            }
        }
        if (Input.GetKeyDown("a"))
        {
            GameObject.FindGameObjectWithTag("MainCamera").GetComponent <Transform>().Translate(-0.1f, 0, 0);
        }
        else if (Input.GetKeyDown("d"))
        {
            GameObject.FindGameObjectWithTag("MainCamera").GetComponent <Transform>().Translate(0.1f, 0, 0);
        }
    }