Button.cs

using UnityEngine;
using System.Collections;

public class Button : MonoBehaviour {
public Texture btnTexture;	
// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
	
	}
	 
    void OnGUI() {
        if (!btnTexture) {
            Debug.LogError("Please assign a texture on the inspector");
            return;
        }
        if (GUI.Button(new Rect(350, 400, 90, 90), btnTexture, GUIStyle.none)){
            Debug.Log("Clicked the button with an image");
	
	// TIANZHU!!!! Put scene name here for main game! Replace TeamSplash!!! 

	Application.LoadLevel ("LVL1");
        }
        if (GUI.Button(new Rect(450, 400, 90, 90), "Credits")){
            Debug.Log("Clicked the button with text");
			
	Application.LoadLevel ("CreditsPage");
        }
    }
}