How do I add a scroll bar to this code or make the current one on here work; this is for iOS. So when thee player clicks the screen, he or she, can scroll down with their finger.

 var vSbarValue : float;
 function OnGUI (){
     vSbarValue = GUI.VerticalScrollbar(Rect (887.5, 150, 100, 300), vSbarValue, 1.0, 10.0, 0.0);
 //Font Size and Color Change
     var statsStyle = new GUIStyle("label");
         statsStyle.fontSize = 30;
     var buttonStyle = new GUIStyle("Button");
         buttonStyle.fontSize = 17.5;
     var statStyle = new GUIStyle("Label");
         statStyle.fontSize = 17.5;
     var twoStyle = new GUIStyle("Label");
         twoStyle.fontSize = 25;
     var fourStyle = new GUIStyle("Label");
         fourStyle.fontSize = 25;
     var pictureStyle = new GUIStyle("Label");
         pictureStyle.fontSize = 20;
 
     //Statistics Title GUI Design
         GUI.contentColor = Color.black;
         GUI.backgroundColor = Color.white;
         GUI.Label(Rect(450,100,250,100), "Statistics",statsStyle);
         GUI.Label(Rect(470,135,250,100), "Pictures",pictureStyle);
 
     //Statistics Sub-Title GUI Design
         GUI.Label(Rect(200,175,250,100), "High Scores for Two Choices:",statStyle);
         GUI.Label(Rect(600,175,250,100), "High Scores for Four Choices:",statStyle);
 
     //Two Choices GUI Design
         GUI.Label(Rect(175,200,250,100), "A - Z = ",twoStyle);
         GUI.Label(Rect(175,275,250,100), "Z -A = ",twoStyle);
         GUI.Label(Rect(175,350,250,100), "Random = ",twoStyle);
 
     //Four Choices GUI Design
         GUI.Label(Rect(575,200,250,100), "A -Z = ",fourStyle);
         GUI.Label(Rect(575,275,250,100), "Z -A = ",fourStyle);
         GUI.Label(Rect(575,350,250,100), "Random = ",fourStyle);
 
 if(GUI.Button(Rect(150,100,150,30), "Back to Menu",buttonStyle)){
     Application.LoadLevel("Menu");
 }
 if(GUI.Button(Rect(750,100,150,30), "Next Page",buttonStyle)) {
     Application.LoadLevel("Statistics2");
 }
     }