How to make my Parallax faster with time? I know it's not hard,but i dont get it!

Code (CSharp):

1. ic bool StartMoving= false;
2.     public float SpeedScroll = 0f;
3.     private bool Moving = false;
4.     private float TimeStart = 0f;
5.  
6.  
7.     // Use this for initialization
8.     void Start () {
9.         NotificationCenter.DefaultCenter().AddObserver(this, "CharacterStartRunning");
10.         NotificationCenter.DefaultCenter().AddObserver(this, "CharacterIsDead");
11.         if (StartMoving) {
12.             CharacterStartRunning();
13.         }
14.     }
15.  
16.     void CharacterIsDead(){
17.         Moving = false;
18.     }
19.  
20.     void CharacterStartRunning(){
21.         Moving = true;
22.        TimeStart = Time.time;
23.     }
24.  
25.     // Update is called once per frame
26.     void Update () {
27.        
28.  
29.             if (Input.GetMouseButtonDown (0)) {
30.                 SpeedScroll += 0.02f;
31.  if(Moving){
32.  
33.             GetComponent<Renderer>().material.mainTextureOffset = new Vector2(((Time.time - TimeStart) * SpeedScroll) % 1, 0);
34.         }
35.     }
36. }
37.  

This is how i get my Scroll moving,but i want it to move faster thru time,any help please?
THANK YOU ALL!

EDIT: I know how to make it faster, but when i click, it looks like the parallax "starts" again, doing an awful effect, like it cuts and starts at the beginning

 

Please use CODE tags.

 

Oh sorry for my mistake,done! =)