Scroll movieclip on zoom area problem

Question

Hi there
I have a script which scrolls a larger image using the
scrollrect function. when you click on the left mouse button the
image is enlarged or zoomed into. but it loses the position that
you originally clicked on. i guess i have to update the x and y
coordinates at the same time as i alter the xscale and yscale but i
m having trouble with the calculation. can anyone help me with
this? i ve searched a lot of sites but not found anything to help?
my code is below or you can look at my test file @
http://www.shiftyshaun.com/zoom2.zip
thanks in advance!
shaun
import mx.utils.Delegate;
import flash.geom.Rectangle;
import flash.geom.Point;
import mx.transitions.Tween;
import mx.transitions.easing.*;
image._x = 0;
image._y = 0;
image.cacheAsBitmap = true;
target = _root;
rect = new Rectangle(0, 0, 640, 480);
mouse = new Point(0, 0);
x_pos = 0;
y_pos = 0;
r_img = new Rectangle(0, 0, image._width, image._height);
r_mask = new Rectangle(image._x, image._y, rect.width,
rect.height);
function start():Void {
image.scrollRect = rect;
image.onEnterFrame = Delegate.create(this, enterframe);
moving = true;
function enterframe():Void {
if (moving) {
mouse.x = target._xmouse;
mouse.y = target._ymouse;
if (r_mask.containsPoint(mouse)) {
y_pos =
((Math.abs(image._y-mouse.y)/rect.height)*(r_img.height-rect.height));
x_pos =
((Math.abs(image._x-mouse.x)/rect.width)*(r_img.width-rect.width));
rect.x += (x_pos-rect.x)/8;
rect.y += (y_pos-rect.y)/8;
image.scrollRect = rect;
start();
var my_event = new Object();
my_event.target = image;
Mouse.addListener(my_event);
my_event.onMouseDown = function() {
if (moving) {
moving = false;
zoomIn();
} else {
zoomOut();
moving = true;
zoomIn = function () {
new Tween(image, "_xscale", Strong.easeOut, 100, 150, 1,
true);
new Tween(image, "_yscale", Strong.easeOut, 100, 150, 1,
true);
trace("rect x = "+rect.x+" rect y = "+rect.y);
zoomOut = function () {
new Tween(image, "_xscale", Strong.easeOut, 150, 100, 1,
true);
new Tween(image, "_yscale", Strong.easeOut, 150, 100, 1,
true);
trace("rect x = "+rect.x+" rect y = "+rect.y);

Answer 1

Problem solved
I just had to rearrange the order of the captions, and now
it's ok. I kept basically the same order as it was when the problem
occured: slide, mouse layer, zoom area and captions.
Cheers!
Andrei
Later edit... thanks Rick for your feedback... seen your post
after I posted this one.