Deadline: 22 May 08H00 Help ME Please Scrolling a movie clip from the Centre

Question

Hi
It has been a while since I have been here I am in need for
some serious help, I am so frustrated.
What I want to do is pretty simple, I am building a DJ
website and the navigation is a pitch controller, similar to what
they have on a mixing board anyway, when you drag the pitch
controller I need the movie clip symbol to scroll either up and
down, so technically the pitch controller will have to start from
the center, but I have no idea what I am doing.
I have been going through tutorials for 15 hours but all they
show you is how to create a normal scroller that starts at the top
and srolls down. I am in desprite need as I have a deadline to meet
for tomorrow morning. HELP

Answer 1

ok this is the code I got from a tutorial that i was woking
from, but I dont really understand it in detail what I do know is I
dont need the arror buttons in this code becuase all I need is a
the scroller.
scrolling = function () {
var scrollHeight:Number = scrollTrack._height;
var contentHeight:Number = contentMain._height;
var scrollFaceHeight:Number = scrollFace._height;
var maskHeight:Number = maskedView._height;
var initPosition:Number = scrollFace._y=scrollTrack._y;
var initContentPos:Number = contentMain._y;
var finalContentPos:Number =
maskHeight-contentHeight+initContentPos;
var left:Number = scrollTrack._x;
var top:Number = scrollTrack._y;
var right:Number = scrollTrack._x;
var bottom:Number =
scrollTrack._height-scrollFaceHeight+scrollTrack._y;
var dy:Number = 0;
var speed:Number = 10;
var moveVal:Number =
(contentHeight-maskHeight)/(scrollHeight-scrollFaceHeight);
scrollFace.onPress = function() {
var currPos:Number = this._y;
startDrag(this, false, left, top, right, bottom);
this.onMouseMove = function() {
dy = Math.abs(initPosition-this._y);
contentMain._y = Math.round(dy*-1*moveVal+initContentPos);
scrollFace.onMouseUp = function() {
stopDrag();
delete this.onMouseMove;
btnUp.onPress = function() {
this.onEnterFrame = function() {
if (contentMain._y+speed<maskedView._y) {
if (scrollFace._y<=top) {
scrollFace._y = top;
} else {
scrollFace._y -= speed/moveVal;
contentMain._y += speed;
} else {
scrollFace._y = top;
contentMain._y = maskedView._y;
delete this.onEnterFrame;
btnUp.onDragOut = function() {
delete this.onEnterFrame;
btnUp.onRelease = function() {
delete this.onEnterFrame;
btnDown.onPress = function() {
this.onEnterFrame = function() {
if (contentMain._y-speed>finalContentPos) {
if (scrollFace._y>=bottom) {
scrollFace._y = bottom;
} else {
scrollFace._y += speed/moveVal;
contentMain._y -= speed;
} else {
scrollFace._y = bottom;
contentMain._y = finalContentPos;
delete this.onEnterFrame;
btnDown.onRelease = function() {
delete this.onEnterFrame;
btnDown.onDragOut = function() {
delete this.onEnterFrame;
if (contentHeight<maskHeight) {
scrollFace._visible = false;
btnUp.enabled = false;
btnDown.enabled = false;
} else {
scrollFace._visible = true;
btnUp.enabled = true;
btnDown.enabled = true;
scrolling();