// Add the GUI skins found here to your project:
// http://unity3d.com/support/resources/assets/extra-gui-skins
// And fill s1 with the downloaded skins on the inspector
// Press space to change between added GUI skins.

var s1 : GUISkin[];

private var hSliderValue : float = 0.0;
private var vSliderValue : float = 0.0;
private var hSValue : float = 0.0;
private var vSValue : float = 0.0;
private var cont : int = 0;

function Update() {
if(Input.GetKeyDown(KeyCode.Space))
cont++;
}
function OnGUI() {
GUI.skin = s1[cont%s1.Length];
if(s1.Length == 0){
Debug.LogError("Assign at least 1 sking on the array");
return;
}
GUI.Label (Rect (10, 10, 100, 20), "Hello World!");
GUI.Box(Rect(10, 50, 50, 50), "A BOX");
if (GUI.Button(Rect(10,110,70,30), "A button"))
Debug.Log("Button has been pressed");
hSliderValue = GUI.HorizontalSlider (Rect (10, 150, 100, 30), hSliderValue, 0.0, 10.0);
vSliderValue = GUI.VerticalSlider (Rect (10, 170, 100, 30), vSliderValue, 10.0, 0.0);
hSValue = GUI.HorizontalScrollbar (Rect (10, 210, 100, 30), hSValue, 1.0, 0.0, 10.0);
vSValue = GUI.VerticalScrollbar (Rect (10, 230, 100, 30), vSValue, 1.0, 10.0, 0.0);
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
public GUISkin[] s1;
private float hSliderValue = 0.0F;
private float vSliderValue = 0.0F;
private float hSValue = 0.0F;
private float vSValue = 0.0F;
private int cont = 0;
void Update() {
if (Input.GetKeyDown(KeyCode.Space))
cont++;

}
void OnGUI() {
GUI.skin = s1[cont % s1.Length];
if (s1.Length == 0) {
Debug.LogError("Assign at least 1 sking on the array");
return;
}
GUI.Label(new Rect(10, 10, 100, 20), "Hello World!");
GUI.Box(new Rect(10, 50, 50, 50), "A BOX");
if (GUI.Button(new Rect(10, 110, 70, 30), "A button"))
Debug.Log("Button has been pressed");

hSliderValue = GUI.HorizontalSlider(new Rect(10, 150, 100, 30), hSliderValue, 0.0F, 10.0F);
vSliderValue = GUI.VerticalSlider(new Rect(10, 170, 100, 30), vSliderValue, 10.0F, 0.0F);
hSValue = GUI.HorizontalScrollbar(new Rect(10, 210, 100, 30), hSValue, 1.0F, 0.0F, 10.0F);
vSValue = GUI.VerticalScrollbar(new Rect(10, 230, 100, 30), vSValue, 1.0F, 10.0F, 0.0F);
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

public s1 as (GUISkin)

private hSliderValue as single = 0.0F

private vSliderValue as single = 0.0F

private hSValue as single = 0.0F

private vSValue as single = 0.0F

private cont as int = 0

def Update():
if Input.GetKeyDown(KeyCode.Space):
cont++

def OnGUI():
GUI.skin = s1[(cont % s1.Length)]
if s1.Length == 0:
Debug.LogError('Assign at least 1 sking on the array')
return
GUI.Label(Rect(10, 10, 100, 20), 'Hello World!')
GUI.Box(Rect(10, 50, 50, 50), 'A BOX')
if GUI.Button(Rect(10, 110, 70, 30), 'A button'):
Debug.Log('Button has been pressed')
hSliderValue = GUI.HorizontalSlider(Rect(10, 150, 100, 30), hSliderValue, 0.0F, 10.0F)
vSliderValue = GUI.VerticalSlider(Rect(10, 170, 100, 30), vSliderValue, 10.0F, 0.0F)
hSValue = GUI.HorizontalScrollbar(Rect(10, 210, 100, 30), hSValue, 1.0F, 0.0F, 10.0F)
vSValue = GUI.VerticalScrollbar(Rect(10, 230, 100, 30), vSValue, 1.0F, 10.0F, 0.0F)