Calling a function in the main movie from a loaded swf

I realize this is probably a very basic question, but I have
loaded a SWF file into another movie. I now want to call a function
in the main SWF. Is there a way to do that? Alternatively, I have a
custom class where I could put the function, but I haven't been
able to figure out how to call it from the loaded SWF either. Do I
somehow need to associate the class with the main movie,
or...?

Never mind - I was doing something very stupid and wasn't
calling the function as a method of a movie clip. I was simply
calling checkTarget(event) rather than
event.currentTarget.checkTarget(event); which seems to work.

Similar Messages

Controlling a Movie Clip on the Main Timeline from a loaded SWF?

Is it possible to control a MovieClip on the main timelne from another loaded clip?
I see posts that control loaded clips, but most are all from the loader in the main timeline. I have a moviclip on the main timeline that I want to make visible or invisible depending on what keyframe is playing in another loaded swf.
If I try to call the movieClip from the loaded SWF I get "error #1119. Access of possibly undefined property...." because it doesn't exist in the loaded SWF, just the main timeline.
The old AS2 way just used "_root". Since "_root" doesn't exist any more, how do you control items on the main TimeLine from a loaded SWF?

I am not clear what you mean because you are saying you are trying to target a movieclip that does not exist where you are trying to target it.
Try using a trace to see what you are targeting when you you target the MovieClip(parent.parent)....
trace(MovieClip(parent.parent));
The other approach I mentioned earlier is the more OOP-correct approach if you would rather try that way. Here's a rough outline of it...
AS3 - Dispatch Event
http://forums.adobe.com/thread/470135?tstart=120
Example:
Add something to trigger the event in the child (your loaded swf):
dispatchEvent(new Event("eventTriggered")); (
if dispatchEvent problem, see: http://www.kirupa.com/forum/showthread.php?p=1899603#post1899603)
In your loading/parent swf, listen for the complete event on the Loader.contentLoaderInfo. In the complete event handler, add a listener for the event on the loaded swf.
// event handler triggered when external swf is loaded
function loaderCompleteHandler(event:Event) {
    MovieClip(event.currentTarget.content).addEventListener("eventTriggered", eventHandler);
function eventHandler(event:Event):void {
    trace("event dispatched in loaded swf");
   // this is where your main file can set the visible property of your movieclip

Calling a function in a flex app from a loaded SWF

How can I call a function in a flex application from a loaded
swf file?

Two ways:
Application.application returns a reference to the top-level
application scope. You can access any public member, var, function,
component, etc through that reference.
Dispatch an event event form the loaded swf and use a event
handler in the main app. All the gurus advise this as best
practice, to ensure "loose coupling" It is also pretty easy,
especially if you use a bubbling event.
Tracy

Calling a Function in the Parent Window from the Child Window

QUESTION: How do I call a function resident in the parent
window from a child window?
BACKGROUND
I have a JavaScript function resident in the parent window
that reformats information obtained from the Date object and writes
the result to the parent window using the document.write( ) method.
I would like to call this function from the child window and have
it write to the child window instead. Is this possible? If not,
must I rewrite the entire function and nest it in the below code?
If so, what is the proper form of nesting?
CODE: The code that creates and fills the child window is
provided below. The highlighted area indicates where I would like
to enter the information from the function resident in the parent
window. I have tried every imaginable permutation of code that I
can imagine and nearly destroyed my parent document in the process.
I am very happy that I had a back-up copy!
function openCitationWindow() {
ciDow = window.open("", "", "width=450, height=175, top=300,
left=300");
ciDow.document.write("A proper way to cite a passage of text
on this page:<br /><br />Stegemann, R. A. 2000.
<cite>Imagine: Bridging a Historical Gap</cite>. " +
document.title + ". [<a href='" + location.href + "'
target='_blank'>online book</a>] <" + location.href
+ "> (");
MISSING CODE;
ciDow.document.write(").<br /><br /><input
type='button' value='Close Window' onclick='window.close()'>");
ciDow.focus();

Never mind - I was doing something very stupid and wasn't
calling the function as a method of a movie clip. I was simply
calling checkTarget(event) rather than
event.currentTarget.checkTarget(event); which seems to work.

Is it possible to call a function with the same name from 2 different dll's at the same time.

I'm trying to call a function ( F ) form 2 different libraries ( A.dll and B.dll ) at the same time. The first lib loaded determines the function F. A->F and B->F have same interface and name but different implementation.

Hi,
I tried it with two dll's, both with the same interface, and at the same
time, in the same VI. The popups even appear at the same time.
But now I understand the problem... Both dll's are created by LabVIEW! If
they are not (or one is not, and the other is), this is no problem.
And VI's in memory cannot have the same name. LabVIEW doesn't care if VI's
are in a dll or not.
This might not help, but if you want to make some sort of "plug in" system,
you might consider using llb's. By loading VI's dynamically, you can select
the path from which they are loaded. You must unload (close all references)
one before the loading the other, or the same problem will occur. If you go
this way, I consider a different approach. Make on
e library (or even a dll)
that has the interface you like, this is the "loader". Now make several
"plug in"'s, with the same interfaces. The name of each function in a plug
in is a concatenation of the library name and the function name. The loader
has one extra function, that loads (and unloads, when done) references to
all desired libraries to use (the names of the functions can be figured out
easily). All that the loader functions do is dynamically call the library
functions. You can use a call by reference node for this (you can use the
connector pane or the loader vi, since the interface must be the same!).
If you go this way, I guess the loader library can be converted to a dll...
Hope this helps.
Wiebe.
"rsam" wrote in message
news:[email protected]..
> Thx Wiebe,
>
> did you load both dll at the same time? For example in 1 vi. Somehow
> the first loaded function keeps to overrule the second. Notice that
> the interface is
exactly the same.
>
> I loaded 2 dll created in Labview with results described above.
>
> Regards Ruud

Menus - how do i go to a frame in the main scene from a loaded movie?

hi...
need help... i actually have done this beofre but dont know
what ia doing worng now..
i created an intro. this into is a seperte movie loaded into
my main movie.
in the intro there is a skip button so that the user can skip
intor and go to a a frame on the main scene i loaded the movie
into...
i tried _root.gotoAndPlay(10) it doenst work...
i trird )level0gotoANdPlay(10) it doent work...
please help !
thanks

Hi there,
Normally you use something like:
loadMovie("intro.swf", intro_mc);
And then you have to say:
_root.intro_mc.gotoAndPlay(10);
The movie that you loaded is in the movieclip. So this should
work.
Greeting Guido
Creation site internet |
Radin
|
Jeux
Concours |
Echantillons

Control the property of an object in main stage from a loaded swf timeline

please someone help me here, im loosing my mind
i have a UILoader that loads an image from an xml list when you click its thumbnail ( in its thumbnails mc on mainstage aswell)
thing is, i have another UILoader on the layer above that loads in a swf ( a slideshow that fades in and out the pictures when they change to the next,
with all the coding on frame 1, frame 2 only has a stop and some code for when the mouse is idle for 5 secs it goes back to frame 1)
so when you go to "portraits" it takes you to frame "x" where the slideshow ( loaded external swf ) starts playing automaticly right,
if i click any thumbnail the slideshow goes to frame 2 ( wich is perfect and the mouse idle thing i wanted works great ) the ONLY THING IS
after the slideshow runs by default for the first time ( i enter the category portraits )
and i click any thumbnail ( moving slideshow swf to frame 2 enabling mouse idle event )
and the mouse is idle ( so it does the event and starts playing the slideshow again ( goes back to frame 1 ) )
I CANT MAKE THE UILOADER OF THE THUMBS IMAGE TO DISSAPPEAR!!!
i have tried everything i can think of and everything i have read trying to adapt it with what i know,
im no guru at this i reeeeally need some help
THANK YOU SO VERY MUCH !

and where would i put the remove.simpleScreen ( simpleScreen is the loader i would want to remove )
would it be on the external swf on frame 1 where the slideshow plays?
or in the main timeline's category's frame?
the problem ( that i see ) is that both loaders are on the same frame ( different layers tho )
so if i put a the remove simplescreen there it wont show me the pictures when i click the thumbs
or could i make it so that it removes it BECAUSE its playing on frame 1 ?

Can't target main stage from dynamically loaded swf...

A part of the Flash app. I'm working on right now does the following -
Main stage loads an external swf using the following function:
function loadAsset(evt:String):void{
var assetName:String = evt;
if (assetName != null){
var assetLdr:Loader = new Loader();
var assetURL:String = assetName;
var assetURLReq:URLRequest = new URLRequest(assetURL);
assetLdr.load(assetURLReq);
assetLdr.contentLoaderInfo.addEventListener( Event.INIT , loaded)
assetLdr.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, displayAssetLoaderProgress);
function loaded(event:Event):void {
   var targetLoader:Loader = Loader(event.target.loader);
   assetWindow.addChild(targetLoader);
The externally loaded swf loads another external swf into itself using the following function:
function loadQuiz(evt:String):void{
var quizName:String = evt;
if (quizName != null){
var quizLdr:Loader = new Loader();
var quizURL:String = quizName;
var quizURLReq:URLRequest = new URLRequest(quizURL);
quizLdr.load(quizURLReq);
quizLdr.contentLoaderInfo.addEventListener( Event.INIT , loaded)
quizLdr.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, displayQuizLoaderProgress);
function loaded(event:Event):void {
   var targetLoader:Loader = Loader(event.target.loader);
   quizWindow.assetLoader.addChild(targetLoader);
Everything loads fine, but from the quizWindow.assetLoader.addChild(targetLoader) level, I want to send a message/fill in a dynamic text box on the Main Stage. I have been "parenting" my brains out and I'm not sure how to communicate with that level.
can anyone show me the proper path or method based off the above, or have a suggestion?
Cheers,
~Chipleh

Andrei1,
Thanks again for your help. I was finally able to get the solution you posted below to work for me.
Much appreciation,
~Chipleh
"In your loaded movie write:
function traceMyself(e:MouseEvent):void{
     dispatchEvent(new Event("I_WANT_TEXT"));
function writeText(text:String):void {
     xmlFileName1.text = text;
In the top movie that loads external swfs something like that:
loadedSwf.addEventListener("I_WANT_TEXT", onTextRequest, true);
function onTextRequest(e:Event):void {
     Object(e.target).writeText(tQuizXmlFile1.theQuizXmlFile.text);
This way these two entities are independent and, most importantly, don't care who is the parent or grandparent."

How do I set a variable on the main timeline from within a symbol?

Just getting started with Animate and coming to it from Flash, as may be apparent from my question. How do you set a variable to the main timeline from within a symbol?
I have 24 pairs of clickable elements, each in their own symbols, and all 24 of those symbols sit inside another symbol. I want all 24 to be able to set the same global variable when clicked. I can't find that this question is addressed anywhere, which makes me think I may be stuck in a Flash mindset and approaching the task in the wrong way. (There are however MANY discussions of how to address objects at different levels in the hierarchy. That's well covered.)
Relatedly, how do you access a function on the main timeline from within a symbol?
Adobe should consider putting together a support page (or pages) just for folks migrating form Flash. In the materials I've encountered so far there seems to be a studied effort to refrain from mentioning Flash in any way. I imagine there are a lot of people out there like me who have a deep background in Flash coding, but are just getting started with Animate. We don't need help with most of the basic concepts, but we may still have some pretty basic questions about how to accomplish some things in Animate because our Flash knowledge is getting in the way.

Hi Bill,
There are plenty of threads on here about scope, but here's one way to create a global variable:
// code on Stage.compositionReady
sym.myGlobalVar = 1;
Then, anywhere in your project, you can check/set that var like so:
sym.getComposition().getStage().myGlobalVar = 2;
And here's one way to create a global function:
// code on Stage.compositionReady
sym.myGlobalFunction = function(){
console.log('myGlobalFunction');
Then, anywhere in your project, you can call that function like so:
sym.getComposition().getStage().myGlobalFunction();

Is it possible to call a function in a parent component from a child component in Flex 3?

This is probably a very basic question but have been wondering this for a while.
I need to call a function located in a parent component and make the call from its child component in Flex 3. Is there a way to access functions in a parent component from the child component? I know I can dispatch an event in the child and add a listener in the parent to call the function, but just wanted to know if could also directly call a parent function from a child (similar to how you can call a function in the main mxml file using Application.application). Thanks

There are no performance issues, but it is ok if you are using the child component in only one class. Suppose if you want to use the same component as a child to some bunch of parents then i would do like the following
public interface IParentImplementation{
     function callParentMethod();
and the parent class should implement this 'IParentImplementation'
usually like the following line
public class parentClass extends Canvas implements IParentImplementation{
          public function callParentMethod():void{
     //code
in the child you should do something like this.
(this.parent as IParentImplementation).callParentMethod();
Here using the Interfaces, we re decoupling the parent and the child
If this post answers your question or helps, please mark it as such.

How to remove a function on the main timeline within a movie clip

How do you remove a function that is coded on a frame in the main timeline from within a movie clip? I tried this, but no dice:
infoGraphicDisparity.addEventListener(MouseEvent.CLICK, fl_ClickToGoToScene);
function fl_ClickToGoToScene(event:MouseEvent):void
parent.removeEventListener (Event.ENTER_FRAME, parent["enterFrameHandler"]);
MovieClip(this.root).gotoAndPlay("disparity");
this is the event I am trying to remove:
stage.addEventListener(Event.ENTER_FRAME, enterFrameHandler);
any help would be appreciated as always.
Thanks!

from any frame (that executes after enterFrameHandler is defined) in any display object in the display list
stage.removeEventListener(Event.ENTER_FRAME, MovieClip(root).enterFrameHandler);

Call a function in the shell SWF from a imported SWF

We have flash set up as a shell to take lesson data from XML
and display it frame by frame.
We import SWF files when the XML tells it to to be displayed
on the frame.
How can I get the imported SWF file to call a function in the
shell....
basically have a button or movie clip in the imported swf
call the "gotoNextFrame()" function in the shell.

We found a "bit" easier way if anyone is interested.. we have
the have an eventlistner added to the loader to assign a event to
the swf file thats imported:
flashLoader.contentLoaderInfo.addEventListener(Event.COMPLETE,
addEventHandlers);
then when its completed, it adds event listeners and calls
our "goNextFrame" function (then clears it when its removed from
the stage):
function addEventHandlers(event:Event):void
var swfMC:MovieClip = event.target.content as MovieClip;
swfMC.addEventListener("NextFrame", goNextFrame);
swfMC.addEventListener("PreviousFrame", goPrevFrame);
swfMC.addEventListener(Event.REMOVED_FROM_STAGE,
clearEventListeners);
Then in the swf file thats to be imported, its real simple:
next_btn.addEventListener(MouseEvent.CLICK, MoveToNextFrame);
prev_btn.addEventListener(MouseEvent.CLICK,
MoveToPreviousFrame);
function MoveToNextFrame(e:MouseEvent):void
dispatchEvent(new Event("NextFrame"));
function MoveToPreviousFrame(e:MouseEvent):void
dispatchEvent(new Event("PreviousFrame"));

Going Back to the main frame, from inside a movie clip time line.

In flash CS5 I want to go back to the main time line, from inside a movie clip button, so when i click the the movie clip it goes to another frame on the main time line..
Can anyone help me?
Thanks
Daniel Derrick

your can use _root to reference the main timeline from anywhere though that can lead to problems if your swf is loaded by another swf. because of that eventuality, it would be better to use a relative path back to the main timeline.
so, from a movieclip's timeline (when the movieclip is on the main timeline), you can use _parent to reference the main timeline.
but even better would be to use no code on that movieclip's timeline and keep all your code on one timeline (the main one).

Calling a delegate on the UI thread from a work thread inside a child class.

Hi All,
I've run into a snag developing a WPF multithreaded app where I need to call a method on the UI thread from my work thread, where the work thread is running a different class.
Currently I am trying to use a delegate and an event in the 2nd class to call a method in the 1st class on the UI thread. This so far is not working as because the 2nd class is running in its own thread, it causes a runtime error when attempting to call
the event.
I've seen lots of solutions referring to using the dispatcher to solve this by invoking the code, however my work thread is running a different class than my UI thread, so it seems the dispatcher is not available?
Below is as simplified an example as I can make of what I am trying to achieve. Currently the below code results in a "The calling thread cannot access this object because a different thread owns it." exception at runtime.
The XAML side of this just produces a button connected to startThread2_Click() and a label which is then intended to be updated by the 2nd thread calling the updateLabelThreaded() function in the first thread when the button is clicked.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
using System.Threading;
namespace multithreadtest
public delegate void runInParent();
public partial class MainWindow : Window
public MainWindow()
InitializeComponent();
threadUpdateLabel.Content = "Thread 1";
private void startThread2_Click(object sender, RoutedEventArgs e)
thread2Class _Thread2 = new thread2Class();
_Thread2.runInParentEvent += new runInParent(updateLabelThreaded);
Thread thread = new Thread(new ThreadStart(_Thread2.threadedTestFunction));
thread.Start();
public void updateLabelThreaded()
threadUpdateLabel.Content = "Thread 2 called me!";
public class thread2Class
public event runInParent runInParentEvent;
public void threadedTestFunction()
if (runInParentEvent != null)
runInParentEvent();
I'm unfortunately not very experienced with c# so I may well be going the complete wrong way about what I'm trying to do. In the larger application I am writing, fundamentally I just need to be able to call a codeblock in the UI thread when I'm in a different
class on another thread (I am updating many different items on the UI thread when the work thread has performed certain steps, so ideally I want to keep as much UI code as possible out of the work thread. The work threads logic is also rather complicated as
I am working with both a webAPI and a MySQL server, so keeping it all in its own class would be ideal)
If a more thorough explanation of what I am trying to achieve would help please let me know.
Any help with either solving the above problem, or suggestions for alternative ways I could get the class in the UI thread to do something when prompted by the 2nd class in the 2nd thread would be appreciated.
Thanks :)

If I follow the explanation, I think you can use MVVM Light messenger.
You can install it using NuGet.
Search on mvvm light libraries only.
You right click solution in solution explorer and choose manage nugget...
So long as you're not accessing ui stuff on these other threads.
using GalaSoft.MvvmLight.Messaging;
namespace wpf_Tester
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
public MainWindow()
InitializeComponent();
Messenger.Default.Register<String>(this, (action) => ReceiveString(action));
private void ReceiveString(string msg)
MessageBox.Show(msg);
Dispatcher.BeginInvoke((Action)delegate()
tb.Text = msg;
private void Button_Click(object sender, RoutedEventArgs e)
Task.Factory.StartNew(() => {
Messenger.Default.Send<String>("Hello World");
What the above does is start up a new thread - that startnew does that.
It sends of message of type string which the main window has subscribed to....it gets that and puts up a message box.
The message is sent from the window to the window in that but this will work across any classes in a solution.
Note that the receive acts on whichever thread the message is sent from.
I would usually be altering properties of a viewmodel with such code which have no thread affinity.
If you're then going to directly access properties of ui elements then you need to use Dispatcher.BeginInvoke to get back to the UI thread.
I do that with an anonymous action in that bit of code but you can call a method or whatever instead if your logic is more complicated or you need it to be re-usable.
http://social.technet.microsoft.com/wiki/contents/articles/26070.aspx
Hope that helps.
Technet articles: Uneventful MVVM;
All my Technet Articles

Remove / unload external swf file(s) from the main flash file and load a new swf file and garbage collection from memory.

I can't seem to remove / unload the external swf files e.g when the carousel.swf (portfolio) is displayed and I press the about button the about content is overlapping the carousel (portfolio) . How can I remove / unload an external swf file from the main flash file and load a new swf file, while at the same time removing garbage collection from memory?
This is the error message(s) I am receiving: "TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/removeChild()
at index_fla::MainTimeline/Down3()"
import nl.demonsters.debugger.MonsterDebugger;
var d:MonsterDebugger=new MonsterDebugger(this);
stage.scaleMode=StageScaleMode.NO_SCALE;
stage.align=StageAlign.TOP_LEFT;
stage.addEventListener(Event.RESIZE, resizeHandler);
// loader is the loader for portfolio page swf
var loader:Loader;
var loader2:Loader;
var loader3:Loader;
var loader1:Loader;
// resize content
function resizeHandler(event:Event):void {
    // resizes portfolio page to center
loader.x = (stage.stageWidth - loader.width) * .5;
loader.y = (stage.stageHeight - loader.height) * .5;
// resizes about page to center
loader3.x = (stage.stageWidth - 482) * .5 - 260;
loader3.y = (stage.stageHeight - 492) * .5 - 140;
/*loader2.x = (stage.stageWidth - 658.65) * .5;
loader2.y = (stage.stageHeight - 551.45) * .5;*/
addEventListener(Event.ENTER_FRAME, onEnterFrame,false, 0, true);
function onEnterFrame(ev:Event):void {
var requesterb:URLRequest=new URLRequest("carouselLoader.swf");
loader = null;
loader = new Loader();
loader.name ="carousel1"
//adds gallery.swf to stage at begining of movie
loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioError);
function ioError(event:IOErrorEvent):void {
trace(event);
try {
loader.load(requesterb);
} catch (error:SecurityError) {
trace(error);
addChild(loader);
loader.x = (stage.stageWidth - 739) * .5;
loader.y = (stage.stageHeight - 500) * .5;
// stop gallery.swf from duplication over and over again on enter frame
removeEventListener(Event.ENTER_FRAME, onEnterFrame);
//PORTFOLIO BUTTON
//adds eventlistner so that gallery.swf can be loaded
MovieClip(root).nav.portfolio.addEventListener(MouseEvent.MOUSE_DOWN, Down, false, 0, true);
function Down(event:MouseEvent):void {
// re adds listener for contact.swf and about.swf
MovieClip(root).nav.info.addEventListener(MouseEvent.MOUSE_DOWN, Down1, false, 0, true);
MovieClip(root).nav.about.addEventListener(MouseEvent.MOUSE_DOWN, Down3, false, 0, true);
//unloads gallery.swf from enter frame if users presses portfolio button in nav
var requester:URLRequest=new URLRequest("carouselLoader.swf");
    loader = null;
loader = new Loader();
loader.name ="carousel"
loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioError);
function ioError(event:IOErrorEvent):void {
trace(event);
try {
loader.load(requester);
} catch (error:SecurityError) {
trace(error);
addChild(loader);
loader.x = (stage.stageWidth - 739) * .5;
loader.y = (stage.stageHeight - 500) * .5;
removeChild( getChildByName("about") );
removeChild( getChildByName("carousel1") );
// remove eventlistner and prevents duplication of gallery.swf
MovieClip(root).nav.portfolio.removeEventListener(MouseEvent.MOUSE_DOWN, Down);
//INFORMATION BUTTON
//adds eventlistner so that info.swf can be loaded
MovieClip(root).nav.info.addEventListener(MouseEvent.MOUSE_DOWN, Down1, false, 0, true);
function Down1(event:MouseEvent):void {
//this re-adds the EventListener for portfolio so that end user can view again if they wish.
MovieClip(root).nav.portfolio.addEventListener(MouseEvent.MOUSE_DOWN, Down, false, 0, true);
MovieClip(root).nav.about.addEventListener(MouseEvent.MOUSE_DOWN, Down3, false, 0, true);
var requester:URLRequest=new URLRequest("contactLoader.swf");
loader2 = null;
loader2 = new Loader();
loader2.name ="contact"
loader2.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioError);
function ioError(event:IOErrorEvent):void {
trace(event);
try {
loader2.load(requester);
} catch (error:SecurityError) {
trace(error);
addChild(loader2);
loader2.x = (stage.stageWidth - 658.65) * .5;
loader2.y = (stage.stageHeight - 551.45) * .5;
// remove eventlistner and prevents duplication of info.swf
MovieClip(root).nav.info.removeEventListener(MouseEvent.MOUSE_DOWN, Down1);
//ABOUT BUTTON
//adds eventlistner so that info.swf can be loaded
MovieClip(root).nav.about.addEventListener(MouseEvent.MOUSE_DOWN, Down3, false, 0, true);
function Down3(event:MouseEvent):void {
//this re-adds the EventListener for portfolio so that end user can view again if they wish.
MovieClip(root).nav.portfolio.addEventListener(MouseEvent.MOUSE_DOWN, Down, false, 0, true);
MovieClip(root).nav.info.addEventListener(MouseEvent.MOUSE_DOWN, Down1, false, 0, true);
var requester:URLRequest=new URLRequest("aboutLoader.swf");
loader3 = null;
loader3 = new Loader();
loader3.name ="about"
loader3.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioError);
function ioError(event:IOErrorEvent):void {
trace(event);
try {
loader3.load(requester);
} catch (error:SecurityError) {
trace(error);
addChild(loader3);
loader3.x = (stage.stageWidth - 482) * .5 - 260;
loader3.y = (stage.stageHeight - 492) * .5 - 140;
removeChild( getChildByName("carousel") );
removeChild( getChildByName("carousel1") );
// remove eventlistner and prevents duplication of info.swf
MovieClip(root).nav.about.removeEventListener(MouseEvent.MOUSE_DOWN, Down3);
stop();

Andrei1,
Thank you for the helpful advice. I made the changes as you suggested but I am receiving a #1009 error message even though my site is working the way I wan it to work. I would still like to fix the errors so that my site runs and error free. This is the error I am receiving:
"TypeError: Error #1009: Cannot access a property or method of a null object reference."
I'm sure this is not the best method to unload loaders and I am guessing this is why I am receiving the following error message.
     loader.unload();
     loader2.unload();
     loader3.unload();
I also tried creating a function to unload the loader but received the same error message and my portfolio swf was not showing at all.
     function killLoad():void{
     try { loader.close(); loader2.close; loader3.close;} catch (e:*) {}
     loader.unload(); loader2.unload(); loader3.unload();
I have a question regarding suggestion you made to set Mouse Event to "null". What does this do setting the MouseEvent do exactly? Also, since I've set the MouseEvent to null do I also have to set the loader to null? e.g.
---- Here is my updated code ----
// variable for external loaders
var loader:Loader;
var loader1:Loader;
var loader2:Loader;
var loader3:Loader;
// makes borders resize with browser size
function resizeHandler(event:Event):void {
// resizes portfolio page to center
     loader.x = (stage.stageWidth - loader.width) * .5;
     loader.y = (stage.stageHeight - loader.height) * .5;
// resizes about page to center
     loader3.x = (stage.stageWidth - 482) * .5 - 260;
     loader3.y = (stage.stageHeight - 492) * .5 - 140;
//adds gallery.swf to stage at begining of moviie
     Down();
//PORTFOLIO BUTTON
//adds eventlistner so that gallery.swf can be loaded
     MovieClip(root).nav.portfolio.addEventListener(MouseEvent.MOUSE_DOWN, Down, false, 0, true);
function Down(event:MouseEvent = null):void {
// re adds listener for contact.swf and about.swf
     MovieClip(root).nav.info.addEventListener(MouseEvent.MOUSE_DOWN, Down1, false, 0, true);
     MovieClip(root).nav.about.addEventListener(MouseEvent.MOUSE_DOWN, Down3, false, 0, true);
//unloads gallery.swf from enter frame if users presses portfolio button in nav
     var requester:URLRequest=new URLRequest("carouselLoader.swf");
     loader = new Loader();
     loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioError);
     function ioError(event:IOErrorEvent):void {
     trace(event);
     try {
     loader.load(requester);
     } catch (error:SecurityError) {
     trace(error);
     this.addChild(loader);
     loader.x = (stage.stageWidth - 739) * .5;
     loader.y = (stage.stageHeight - 500) * .5;
// sure this is not the best way to do this - but it is unload external swfs
     loader.unload();
     loader2.unload();
     loader3.unload();
// remove eventlistner and prevents duplication of gallery.swf
     MovieClip(root).nav.portfolio.removeEventListener(MouseEvent.MOUSE_DOWN, Down);
//INFORMATION BUTTON
     //adds eventlistner so that info.swf can be loaded
     MovieClip(root).nav.info.addEventListener(MouseEvent.MOUSE_DOWN, Down1, false, 0, true);
     function Down1(event:MouseEvent = null):void {
     //this re-adds the EventListener for portfolio so that end user can view again if they wish.
     MovieClip(root).nav.portfolio.addEventListener(MouseEvent.MOUSE_DOWN, Down, false, 0, true);
     MovieClip(root).nav.about.addEventListener(MouseEvent.MOUSE_DOWN, Down3, false, 0, true);
     var requester:URLRequest=new URLRequest("contactLoader.swf");
     loader2 = null;
     loader2 = new Loader();
     loader2.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioError);
     function ioError(event:IOErrorEvent):void {
     trace(event);
     try {
     loader2.load(requester);
}      catch (error:SecurityError) {
     trace(error);
     addChild(loader2);
     loader2.x = (stage.stageWidth - 658.65) * .5;
     loader2.y = (stage.stageHeight - 551.45) * .5;
loader.unload();
loader2.unload();
loader3.unload();
     // remove eventlistner and prevents duplication of info.swf
     MovieClip(root).nav.info.removeEventListener(MouseEvent.MOUSE_DOWN, Down1);
//ABOUT BUTTON
     //adds eventlistner so that info.swf can be loaded
     MovieClip(root).nav.about.addEventListener(MouseEvent.MOUSE_DOWN, Down3, false, 0, true);
     function Down3(event:MouseEvent = null):void {
     //this re-adds the EventListener for portfolio so that end user can view again if they wish.
     MovieClip(root).nav.portfolio.addEventListener(MouseEvent.MOUSE_DOWN, Down, false, 0, true);
     MovieClip(root).nav.info.addEventListener(MouseEvent.MOUSE_DOWN, Down1, false, 0, true);
     var requester:URLRequest=new URLRequest("aboutLoader.swf");
     loader3 = null;
     loader3 = new Loader();
     loader3.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioError);
     function ioError(event:IOErrorEvent):void {
     trace(event);
     try {
     loader3.load(requester);
}      catch (error:SecurityError) {
     trace(error);
     addChild(loader3);
     loader3.x = (stage.stageWidth - 482) * .5 - 260;
     loader3.y = (stage.stageHeight - 492) * .5 - 140;
     loader.unload();
     loader2.unload();
     loader3.unload();
     // remove eventlistner and prevents duplication of info.swf
     MovieClip(root).nav.about.removeEventListener(MouseEvent.MOUSE_DOWN, Down3);
     stop();

Calling a function in the main movie from a loaded swf

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