Functions OnMouseOver , OnMouseExit and OnMouseDown on iPhone ?

Hi folks
Why these functions don`t work on iPhone or other touch devices ?
I trying around a week to make it happens but no luck whats wrong with my code ?
Look sample code

startnewgame.js

function Start(){
guiText.material.color=Color.yellow;
}
function OnMouseOver () {
guiText.material.color=Color.green;
}

function OnMouseExit(){
guiText.material.color=Color.yellow;
}

function OnMouseDown(){
PlayerPrefs.SetInt("falllevel", 0);
Application.LoadLevel(Application.loadedLevel);
}

 

This is by design, indeed the scripting reference pages for OnMouseEnter, etc, say that the functions have no effect on the iPhone.

 

My code is ready to go only i need to learn is how to (CHANGE OnMouse events) to implement this metod :

if (Input.touchCount > 0)
{
Touch touch = Input.GetTouch(0);
yourCode();
}

OnMouse is not compatible with iOS >>>>>>>> Look more of my code with the <damn> OnMouse Events i hate that XD

var lock:Texture;

var loadlevel:int;

private var zoom:boolean=false;

function OnMouseOver () {
zoom=true;
if(transform.localScale.x <= 0.87 renderer.material.mainTexture != lock){
transform.localScale.x += 0.8 * Time.deltaTime;
transform.localScale.y += 0.8 * Time.deltaTime;
}
}

function OnMouseExit(){
zoom=false;
}

function OnMouseDown(){
if(renderer.material.mainTexture != lock){
Application.LoadLevel(loadlevel);
}
}


function Update(){
if(!zoom renderer.material.mainTexture != lock){
if(transform.localScale.x >= 0.25){
transform.localScale.x -= 0.2 * Time.deltaTime;
transform.localScale.y -= 0.2 * Time.deltaTime;
}
}
}

I need to join the function Update with that code ?


if (Input.touchCount > 0)
{
Touch touch = Input.GetTouch(0);
yourCode();
}


Because 2 function Update is not allowed Right ?

See more_______________________________________________________________________________

This is my production code___________________________________________

var textura:Texture2D;
var texturaover:Texture2D;
function OnMouseOver () {
guiTexture.texture=texturaover;
}
function OnMouseExit(){
guiTexture.texture=textura;
}
function OnMouseDown(){
Application.LoadLevel(Application.loadedLevel+1);
}

This is the code with the modifications ! _________________________________

var textura:Texture2D;
var texturaover:Texture2D;

if (Input.touchCount > 0)
{
Touch touch = Input.GetTouch(0);
guiTexture.texture=texturaover;
}

if (Input.touchCount > 0)
{
Touch touch = Input.GetTouch(0);
guiTexture.texture=textura;
}

if (Input.touchCount > 0)
{
Touch touch = Input.GetTouch(0);
Application.LoadLevel(Application.loadedLevel+1);
}

Unity say ERROR > Assets/scripts/nextlevel.js(14,58): UCE0001: ';' expected. Insert a semicolon at the end.

Many thanks in advance man !!!!!!!!