Countdown little help...!

Hi... I have this little script countdown timer.

var myTimer : float = 5.0;

function Update () {
 if(myTimer > 0){
  myTimer -= Time.deltaTime;
 }
 if(myTimer <= 0){
  Debug.Log("GAME OVER");
  Application.LoadLevel (1);
 }
}

I want also to show that countdown time on the top right corner of my screen. How can i do that? Just edit the script and show me how. Thank you.

var myTimer : float = 5.0;

function Update () {
 if(myTimer > 0){
  myTimer -= Time.deltaTime;
 }
 if(myTimer <= 0){
  Debug.Log("GAME OVER");
  Application.LoadLevel (1);
 }
}

function OnGUI(){
 GUI.Label( Rect(Screen.width - 200, 0, 200, 30), "Time: " + myTimer );

}