Help if anyone can PageTurning effect

Question

I am using some code to creat the page turning effect, which
works quite nicely to turn pages. But it only turns pages from
right to left and I would like the option of going left to right.
The code or file i used is from:
http://www.oreillynet.com/pub/a/javascript/2004/09/03/flashhacks.html
You can download the source .fla from here
I was hoping some one could point in the direction or gimme
some pointers on how I could re-code this effect to turn both ways
http://www.oreillynet.com/pub/a/javascript/2004/09/03/flashhacks.html

Answer 1

heres the code by the way. Downloading the file may be a long
process
function curlPage(p) {
// Create the page pair p and p+1
var topPage = this.attachMovie(pages[p], pages[p],
TOP_PAGE_DEPTH, pagePos);
var bottomPage = this.attachMovie(pages[p+1], pages[p+1],
BOTTOM_PAGE_DEPTH, pagePos);
// Mask the bottomPage (recall that bottomPage is actually
the one that
// appears on the top).
bottomPage.setMask(line.rightMask);
line.onEnterFrame = function() {
// This function curls the bottom
// left hand corner of the rightmost page.
line._x += (PAGE_CURL-line._x)/TURN_RATE;
movePages();
if ((line._x-PAGE_CURL)<1) {
delete this.onEnterFrame;
function pageTurn() {
// This function performs the page turning
// animation that occurs when the user is
// dragging the page.
var oldMousePos = _xmouse;
line.onMouseMove = function() {
line._x += _xmouse-oldMousePos;
oldMousePos = _xmouse;
if (line._x>PAGE_CURL) {
line._x = PAGE_CURL;
} else if (line._x<PAGE_SPINE) {
line._x = PAGE_SPINE;
movePages();
updateAfterEvent();
function movePages() {
backPage._x = line._x;
backPage.back._x = -(PAGE_EDGE-line._x);
backPage._rotation = 90*(line._x-PAGE_SPINE)/page._width;
line._rotation = 45*(line._x-PAGE_SPINE)/page._width;
function pageRelease() {
// This function runs when the user
// lets go of the page. It decides
// on whether the page should be opened
// or closed depending on where in the
// page turn the page was released, and
// uses either openPage() or closePage()
// to open/close the page respectively.
delete line.onMouseMove;
if (line._x<HALF_PAGE_TURN) {
turnInterval = setInterval(openPage, 10);
} else {
turnInterval = setInterval(closePage, 10);
function openPage() {
// This function opens the page (i.e. turns
// the current page to the left) if the user
// lets go of the page when it is almost open.
line._x += (PAGE_SPINE-line._x)/TURN_RATE;
if ((line._x-PAGE_SPINE)<1) {
if (pageNum<pages.length-2) {
line._x = PAGE_EDGE;
curlPage(++pageNum);
clearInterval(turnInterval);
movePages();
updateAfterEvent();
function closePage() {
// This function closes the page (i.e. turns
// the current page to the right) if the user
// lets go of the page when it is almost closed.
line._x += (PAGE_CURL-line._x)/TURN_RATE;
if ((PAGE_CURL-line._x)<1) {
line._x = PAGE_CURL;
clearInterval(turnInterval);
movePages();
updateAfterEvent();
// Set up constants
var PAGE_SPINE = page._x;
var PAGE_EDGE = page._x+page._width;
var PAGE_CURL = PAGE_EDGE-20;
var HALF_PAGE_TURN = PAGE_SPINE+(PAGE_EDGE-PAGE_SPINE)/3;
var TURN_RATE = 3;
var TOP_PAGE_DEPTH = 0;
var BOTTOM_PAGE_DEPTH = TOP_PAGE_DEPTH+1;
var BACK_PAGE_DEPTH = TOP_PAGE_DEPTH+2;
// Set up variables
var lineAngle = 45;
var pageNum = 0;
var turnInterval = 0;
var pages = ["page1", "page2", "page3", "page4",
"page5","page6", "cover"];
// Set up position objects for the
// parts of the book that will be
// attached to the stage dynamically
var pagePos = {_x
age._x, _y
age._y};
var backPos = {_x
AGE_EDGE, _y
age._y+page._height, _rotation:90};
var linePos = {_x
AGE_EDGE, _y
age._y+page._height, _rotation:lineAngle};
var hideShadowPos = {_x
AGE_EDGE, _y
age._y};
// Attach the book parts
var backPage = this.attachMovie("backPage","backPage",
BACK_PAGE_DEPTH, backPos);
var line = this.attachMovie("line", "line", TOP_PAGE_DEPTH+3,
linePos);
var hideShadow = this.attachMovie("hideShadow", "hideShadow",
1000, hideShadowPos);
// Set up the interaction events
// (NB - the 'turn page' button is
// the back of the turning page).
backPage.onPress = pageTurn;
backPage.onRelease = pageRelease;
backPage.onReleaseOutside = pageRelease;
// Define the permanent masks.
line.pageShadow.setMask(backPage.back.shadowMask);
backPage.setMask(line.leftMask);
// Create the initial curled page.
curlPage(pageNum);
Again please if anyone knows the way I could re-code this so
as to create the page turning effect in both directions.
I'm thinking of just duplicating all the code for the right
side onto the left but this might not be the smart way of doing
this.