I need to make 4 Buttons in this code, i dont know how

Hi, i have this functional code, when this script detect the frame marker it show a GUI Animation menu for 5 animations, in this code im just have one button, ¿how can i add other 4 button in the same code? Thanks for your answer.

using UnityEngine;
using System.Collections;

public class ButtonPopup : MonoBehaviour, ITrackableEventHandler {
	
	private TrackableBehaviour mTrackableBehaviour;
	
	private bool mShowGUIButton = false;
	private Rect mButtonRect = new Rect(50,50,120,60);
	
	void Start () {
		mTrackableBehaviour = GetComponent<TrackableBehaviour>();
		if (mTrackableBehaviour)
		{
			mTrackableBehaviour.RegisterTrackableEventHandler(this);
		}
	}
	
	public void OnTrackableStateChanged(
		TrackableBehaviour.Status previousStatus,
		TrackableBehaviour.Status newStatus)
	{
		if (newStatus == TrackableBehaviour.Status.DETECTED ||
		    newStatus == TrackableBehaviour.Status.TRACKED)
		{
			mShowGUIButton = true;
		}
		else
		{
			mShowGUIButton = false;
		}
	}
	
	void OnGUI() {
		if (mShowGUIButton) {
			// draw the GUI button
			if (GUI.Button(mButtonRect, "Correr")) {GameObject.Find("dilophosaurio").animation.Play("run");
				// do something on button click 
			}
		}
	}
}

void OnGUI() {
if (mShowGUIButton) {
//Draw the GUI button

    if (GUI.Button(Rect, "Text1")){
      // do something
    }
    if (GUI.Button(Rect, "Text2")){
      // do something
    }
    if (GUI.Button(Rect, "Text3")){
      // do something
    }
    if (GUI.Button(Rect, "Text4")){
      // do something
    }
  }
}