GUI.VerticalSlider
static function VerticalSlider(position: Rect, value: float, topValue: float, bottomValue: float): float;
static float VerticalSlider(Rect position, float value, float topValue, float bottomValue);
static def VerticalSlider(position as Rect, value as float, topValue as float, bottomValue as float) as float
static function VerticalSlider(position: Rect, value: float, topValue: float, bottomValue: float, slider: GUIStyle, thumb: GUIStyle): float;
static float VerticalSlider(Rect position, float value, float topValue, float bottomValue, GUIStyle slider, GUIStyle thumb);
static def VerticalSlider(position as Rect, value as float, topValue as float, bottomValue as float, slider as GUIStyle, thumb as GUIStyle) as float
Parameters

position Rectangle on the screen to use for the slider.
value The value the slider shows. This determines the position of the draggable thumb.
topValue The value at the top end of the slider.
bottomValue The value at the bottom end of the slider.
slider The GUIStyle to use for displaying the dragging area. If left out, the horizontalSlider style from the current GUISkin is used.
thumb The GUIStyle to use for displaying draggable thumb. If left out, the horizontalSliderThumb style from the current GUISkin is used.
Returns
float The value that has been set by the user.
Description

A vertical slider the user can drag to change a value between a min and a max.

	// Draws a vertical slider control that goes from  10 (top) to 0 (bottom)
	var vSliderValue : float = 0.0;
	function OnGUI () {
		vSliderValue = GUI.VerticalSlider (Rect (25, 25, 100, 30), vSliderValue, 10.0, 0.0);
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public float vSliderValue = 0.0F;
    void OnGUI() {
        vSliderValue = GUI.VerticalSlider(new Rect(25, 25, 100, 30), vSliderValue, 10.0F, 0.0F);
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public vSliderValue as float = 0.0F

	def OnGUI() as void:
		vSliderValue = GUI.VerticalSlider(Rect(25, 25, 100, 30), vSliderValue, 10.0F, 0.0F)