Why my rect not working

I don't are sure is this right place to ask, but i ask now. Why this not print anything? It stop game, but not any menu.

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class pause : MonoBehaviour {
5.     public GUISkin Myskin;
6.    
7.    
8.     private Rect windowRect;
9.     private Rect optionRect;
10.     private bool pauseMenu = false;
11.     private bool optionMenu = false;
12.        
13.     // Use this for initialization
14.     void Start () {
15.         windowRect = new Rect(Screen.width / 2 - 100, Screen.height / 2 - 100, 200, 200);
16.         optionRect = new Rect(Screen.width / 2 - 100, Screen.height / 2 - 100, 200, 200);      
17.    
18.     }
19.    
20.     // Update is called once per frame
21.     void Update () {
22.         if (Input.GetKey(KeyCode.P)) {
23.             pauseMenu=true;
24.         }
25.        
26.         if (pauseMenu) {
27.             Time.timeScale = 0;
28.         } else {
29.             Time.timeScale = 1;
30.         }
31.     }
32.    
33.     private void OnGui() {
34.         if (pauseMenu) {
35.             windowRect = GUI.Window(0, windowRect, windowFunc, "Pause");
36.         }
37.         if (optionMenu) {
38.             optionRect = GUI.Window(0, optionRect, optionFunc, "Options");
39.         }
40.     }
41.     private void windowFunc( int id) {
42.         if (GUILayout.Button ("Resume")) {
43.             pauseMenu = false;
44.         }
45.         if (GUILayout.Button("Options")) {
46.             optionMenu = true;
47.         }
48.         if (GUILayout.Button ("Save")) {
49.            
50.         }
51.         if (GUILayout.Button ("Quit")) {
52.             Application.LoadLevel("window");
53.         }
54.     }
55.    
56.     private void optionFunc( int id ) {
57.         if (GUILayout.Button ("Back")) {
58.             optionMenu = false;
59.         }
60.     }
61.    
62. }
63.  

 

It's OnGUI not OnGui. Also, don't make it private.