Stale GUITexture Button

using UnityEngine;
using System.Collections;

[RequireComponent (typeof (GUITexture))]

public class TouchButton : MonoBehaviour {
	public GUITexture theButton;
	public ButtonType buttonType;
	public float tapTime;
	private int tapCount;
	private float tapTimer;

	void Awake () {
		tapCount = 0;
		tapTimer = 0.0f;
	}

	void  Update () {
		if (tapTimer > 0) tapTimer -= Time.deltaTime;
		else tapCount = 0;

		if (Input.touchCount > 0) {
			foreach (Touch touch in Input.touches) {
			    if (theButton.HitTest(touch.position)) {

					// DoSomething();

				}
			}
		}
	}
}