Kirupa Sliding Menu need Prev, Next Function

programming flash
1

Hi i have done one Product banner with help of Kirupa sliding menu
http://www.kirupa.com/developer/flash8/slidingMenu.htm
but i use only 2 Buttons for Previous and next function. i have changed the code like this . But now i need to load the Product -3 with respective the timer functionality. When i click the Next Button the Product shoud be incremented, i Think i need to do some increment’s onRelease area

For example :
http://www.kirupa.com/developer/mx2004/xml_flash_photogallery2.htm

The Code below what i have done :

///////////////////////////////////////////////////////////////////

var currentPosition:Number = contentHold.content1._x;
var startFlag:Boolean = false;
menuSlide = function (input:MovieClip) {
if (startFlag == false) {
startFlag = true;
var finalDestination:Number = input._x;
var distanceMoved:Number = 0;
var distanceToMove:Number = Math.abs(finalDestination-currentPosition);
var finalSpeed:Number = .3;
var currentSpeed:Number = 0;
var dir:Number = 1;
if (currentPosition<=finalDestination) {
dir = -1;
} else if (currentPosition>finalDestination) {
dir = 1;
}
this.onEnterFrame = function() {
currentSpeed = Math.round((distanceToMove-distanceMoved+1)finalSpeed);
distanceMoved += currentSpeed;
contentHold._x += dircurrentSpeed;
if (Math.abs(distanceMoved-distanceToMove)<=1) {
contentHold._x = maskMovie._x-currentPosition+dir*distanceToMove;
currentPosition = input._x;
startFlag = false;
delete this.onEnterFrame;
}
};
}
};

/////////////////////////////////

var _first:Boolean = true;
function goOn():Void {
if (_first) {
_first = false;
menuSlide(contentHold.content2);
} else {
_first = true;
menuSlide(contentHold.content1);
}

}
var myDelay:Number = setInterval(goOn, 10000);

////////////////////////////////////

b1.onRelease = function() {

menuSlide(contentHold.content1);

};
b2.onRelease = function() {

menuSlide(contentHold.content2);

};