It doesnt show the buttons I coded

Questions & Answers
1

Hi guys, sorry to bother, I wrote some code and I wonder why its not displaying the code on 2D because it worked before for me on a 3D environment, please any advice and help would be greatly appreciated.

using UnityEngine;
using System.Collections;

public class Menu : MonoBehaviour 
{
	public GUISkin skin = null;
	
	public float widthPercent = 0.3f;
	public float heightPercent = 0.3f;
	
	public Texture2D logo = null;
	
	void onGUI()
	{
		GUI.skin = skin;
		
		// Calculate the menu rect
		Rect r = new Rect(Screen.width * (1 - widthPercent) / 2, Screen.height * (1 - heightPercent) / 2, Screen.width * widthPercent, Screen.height * heightPercent);
		
		// Draw logo, centered at the top right of the of the menu
		if (logo != null)
		{
			Rect l = new Rect(r.x + r.width - logo.width / 2, r.y - logo.height / 2, logo.width, logo.height);
			GUI.DrawTexture(l, logo);
		}
		
		// Draw the menu
		GUILayout.BeginArea(r);
			GUILayout.BeginVertical("box");
			
				if (GUILayout.Button("Play"))
					Application.LoadLevel("Level 1");
				
				if (GUILayout.Button("Quit"))
					Application.Quit();
			
			GUILayout.EndVertical();
		GUILayout.EndArea();
	}
}
2

The function is ‘OnGUI()’ with an upper case ‘O’ to start.