Menu of Graphics

How do I when you click “” to appear for settings graphics, example “graphic, good, simple, good”
Note: I’m Brazilian , and the have to be modifiable with GUI STYLE
#pragma strict
//Carregar outra cena
private var isLoading = false;

//Config.
var posiX: float;
var posiY: float;

var altura: float;
var largura: float;

var perSkin : GUISkin;

var controlePause: boolean;

var ObSalvar: Salvar;

var nSave: String;


function Start () {
ObSalvar = gameObject.AddComponent(Salvar);
altura  = 70;
largura = 150;

posiX = Screen.width/2 - largura/2 ; 
posiY = Screen.height/2- altura /2 + 90;
controlePause = true;

}

function Update () {
if(Input.GetKeyDown(KeyCode.Escape))
  if (controlePause)
  {
    Time.timeScale = 0;
    controlePause = false;
  }
  else
  {
    Time.timeScale = 1;
    controlePause = true;
  }
  
}


function OnGUI()
{
GUI.skin = perSkin;
  if (!controlePause)
  {
    GUI.Box(Rect(0,0,Screen.width,Screen.height)," ");
    if (GUI.Button(Rect(posiX,posiY,largura,altura),"Graficos"))
     {
       var names = QualitySettings.names;
		GUILayout.BeginVertical ();
		for (var i = 0; i < names.Length; i++)
		{
			if (GUILayout.Button (names*))*
  •  		QualitySettings.SetQualityLevel (i, true);*
    
  •  }*
    
  •  GUILayout.EndVertical ();*
    

}
if (GUI.Button(Rect(posiX,posiY+altura+10,largura,altura),“Sair”))
{
isLoading = true;
Application.LoadLevel(“Menu Inicial”);
}

{
//controlePause = !controlePause;

nSave = ObSalvar.VerificaSave();
print(nSave);

}

}
}

Try this.