Fireflies using AS3, conversion from AS2

Question

Hey guys. I'm new to AS3. I do know the bare basics. I figure someone on here will know more than my teacher. (I'm paying for a class to learn actionscript, and as it turns out, he does as little of it as possible.) I wanted to have fireflies floating on my project, like particle effects. I have everything working with a tweaked version of an AS2 file I came across. Everything works in AS2, but I have no idea how to convert the syntax to work in my AS3 file. I get that they're different from each other, but can someone help me acheive the same results in AS3?
http://www.mediafire.com/?o3qcc9bbt8b4p73
The original is the file I'm trying to modify, and fireflies.fla is my modifications, in case anyone wants to see how poorly coded my translation was. It keeps telling me that it can't set the value for a String, though I'm not sure why.
There are two basic components. "Pointer" is an invisible instance that the fireflies use as an anchor (so they can't go off the page), and mcObj is called from the library and is the firefly graphic with coding.
The actionscript for the the parent is:
Stage.align = "";
Stage.scaleMode = "noScale";
Stage.showMenu = false;
Stage.onResize = false;
damp = 0.65;
Fat = 2;
limx = 1000;
limy = 100;
maxScale = 8;
bugNum = 15;
startX = pointer._x;
startY = pointer._y;
pointer._visible = 0;
for (i=1; i<=bugNum; i++) {
    attachMovie("bug", "bug"+i, i);
    dot = eval("bug"+i);
    dot._xscale = dot._yscale=maxScale;
    dot.color = new Color(dot);
    dot.color.setRGB("0xFFFF66");
    dot._x = startX+Math.random()*600;
    dot._y = startY+Math.random()*200;
btn.onRollOver = function() {
    _root.light.gotoAndPlay(2);
btn.onRollOut = function() {
    _root.light.gotoAndStop(1);
And the coding for the firefly is:
this._x = this._x+this.vx;
this._y = this._y+this.vy;
this.vx = this.vx+(Math.random()*2-1);
this.vy = this.vy+(Math.random()*2-1);
this.vx = this.vx*_parent.damp;
this.vy = this.vy*_parent.damp;
this._xscale = this._xscale-_parent.fat;
this._yscale = this._yscale-_parent.fat;
if (_parent.startX+_parent.limx<this._x) {
    this.vx = -this.vx;
    this._x = _parent.startX+_parent.limx;
if (this._x<_parent.startX-_parent.limx) {
    this.vx = -this.vx;
    this._x = _parent.startX-_parent.limx;
if (_parent.startY+_parent.limy<this._y) {
    this.vy = -this.vy;
    this._y = _parent.startY+_parent.limy;
if (this._y<startY.startY-_parent.limy) {
    this.vy = -this.vy;
    this._y = _parent.startY-_parent.limy;
if (_parent.maxScale<this._yscale || this._yscale<_parent.maxScale/25) {
    _parent.fat = -_parent.fat;
Anyone who can help, please do. I need to have this done by the end of the week :/

Answer 1

//stage.align = "";
stage.scaleMode = "noScale";
stage.showDefaultContextMenu = false;
var damp:Number = 0.65;
var Fat:Number = 2;
var limx:Number = 1000;
var limy:Number = 100;
var maxScale:Number = 8;
var bugNum:int = 15;
var startX:Number = pointer.x;
var startY:Number = pointer.y;
pointer.visible = false;
for (var i:int=1; i<=bugNum; i++) {
    //attachMovie("bug", "bug"+i, i);
this["bug"+i]=new but();  // assign class
addChild(this["bug"+i]);
   var  dot:MovieClip = this["bug"+i];
    dot.scaleX = dot.scaleY=maxScale;
var ct:ColorTransform=dot.colorTransform;
ct.color = 0xFFFF66;dot.colorTransform=ct;    dot.x = startX+Math.random()*600;
    dot.y = startY+Math.random()*200;
btn.addEventListener(MouseEvent.MOUSE_OVER,onRollOverF);
btn.addEventListener(MouseEvent.MOUSE_OUT,onRollOutF);
function onRollOverF(e:MouseEvent):void {
    MovieClip(root).light.gotoAndPlay(2);
function onRollOutF(e:MouseEvent):void {
    MovieClip(root).light.gotoAndStop(1);
And the coding for the firefly is:
var initialized:Boolean;
if(!initialized){
this.vx=0;
this.vy=0;
initialized=true;
this.x += this.vx;
this.y += this.vy;
this.vx = this.vx+(Math.random()*2-1);
this.vy = this.vy+(Math.random()*2-1);
this.vx = this.vx*MovieClip(parent).damp;
this.vy = this.vy*MovieClip(parent).damp;
this.scaleX -= MovieClip(parent).fat;
this.scaleY = this.scaleX;
if (MovieClip(parent).startX+MovieClip(parent).limx<this.x) {
    this.vx = -this.vx;
    this.x = MovieClip(parent).startX+MovieClip(parent).limx;
if (this.x!=MovieClip(parent).startX-MovieClip(parent).limx) {
    this.vx = -this.vx;
    this.x = MovieClip(parent).startX-MovieClip(parent).limx;
if (MovieClip(parent).startY+MovieClip(parent).limy<this.y) {
    this.vy = -this.vy;
    this.y = MovieClip(parent).startY+MovieClip(parent).limy;
if (this.y!=MovieClip(parent).startY-MovieClip(parent).limy) {
    this.vy = -this.vy;
    this.y = MovieClip(parent).startY-MovieClip(parent).limy;
if (MovieClip(parent).maxScale<this.scaleX || this.scaleY<MovieClip(parent).maxScale/25) {
    MovieClip(parent).fat = -MovieClip(parent).fat;