(C#) GUI Buttons not working

I am trying to make a main menu from the built in GUI system.This is my first time doing this so I do not know that much about them. But anyways here is my problem.When I press the buttons they do not say that they have been clicked.

Here is my script.

using UnityEngine;
using System.Collections;

[ExecuteInEditMode]//Be seen in edit mode

public class MainMenu : MonoBehaviour
{
	//Variables Start

	//Private Variables
	private bool ShowMainMenu = false;
	private bool ShowSinglePlayer = false;
	private bool ShowMultiPlayer = false;
	private bool ShowOptions = false;
	private bool ShowCredits = false;
	private bool ShowSettings = false;
	private bool ShowContollerSettings = false;
	private bool ShowGraphicalSettings = false;
	private bool ShowExit = false;


	//Variables To make it in the middle
	public Rect WindowPosition = new Rect(20,20, 120, 50);
	public bool CenterWindow = true;
	private Rect CurrentRect =  new Rect(20,20, 120, 50);
	

	//Varioables End


	void Start()
	{
		CurrentRect = WindowPosition;
	}

	void OnGUI()
	{
		CenterWindow = true;
		ShowMainMenu = true;

		if(CenterWindow)
		{
			CurrentRect.x = (Screen.width * 0.5f) - (CurrentRect.width * 0.5f);
			CurrentRect.y = (Screen.height * 0.5f) - (CurrentRect.height * 0.5f);
		}

		if(ShowMainMenu)
		{
			CurrentRect = GUILayout.Window(0, CurrentRect, MainMenuWindow, "Main Menu",GUILayout.MinHeight(Screen.height * 0.25f),GUILayout.MinWidth(Screen.width * 0.25f));
		}
	}

	void MainMenuWindow(int windowID)
	{
		GUILayout.BeginVertical();
			if(GUILayout.Button("Singleplayer"));

			print("You are now in the singleplayer Window");
		
				GUILayout.Space(2);
			if(GUILayout.Button("Multiplayer"));

			print("You are now in the Multiplayer Window");
		
				GUILayout.Space(2);
			if(GUILayout.Button("Options"));
				GUILayout.Space(2);
			if(GUILayout.Button("Credits"));
				GUILayout.Space(2);
			if(GUILayout.Button("About Us"));
				GUILayout.Space(2);
			if(GUILayout.Button("Quit"));
		GUILayout.EndVertical();

	}

I do not get any errors.The buttons say that they are clicked right when you press play. Please help me with this I am stuck.

Thanks
Infinite Gamer

I’m not what you want to happen here, but you don’t have any clause after all your ‘if’ statements. By having a ‘;’ at the end of each ‘if()’, you are terminating the ‘if()’ statements with no possible action. Replace your ‘MainMenuWindow’ with this:

void MainMenuWindow(int windowID)
{
	GUILayout.BeginVertical();
	if(GUILayout.Button("Singleplayer"))  Debug.Log ("Singleplayer");
	
	//print("You are now in the singleplayer Window");
	
	GUILayout.Space(2);
	if(GUILayout.Button("Multiplayer")) Debug.Log ("Multiplayer");
	
	//print("You are now in the Multiplayer Window");
	
	GUILayout.Space(2);
	if(GUILayout.Button("Options")) Debug.Log ("Options");
	GUILayout.Space(2);
	if(GUILayout.Button("Credits"))  Debug.Log ("Credits");
	GUILayout.Space(2);
	if(GUILayout.Button("About Us"))  Debug.Log ("About Us");
	GUILayout.Space(2);
	if(GUILayout.Button("Quit"))  Debug.Log ("Quit");
	GUILayout.EndVertical();
	
}