Edit ActionScript to be behind other layers?

Question

I used some ActionScript to create a snow effect for my flash animation. Right now, the snow falls in front of my other layers, and sending to back isn't working. I'll post the ActionScript below.
I have a treeline background, with snow falling on top of that. I have pieces of a logo flying in, and I want that to be OVER the snow. Currently, when I play the animation, all I can see is the treeline and snow, and I'm guessing the logo is flying together behind it.
Can anyone be kind enough to point out how I can get this done? Thanks so much.
Snowfall ActionScript that I used (not mine) :
var snowflakes:Array = new Array();
var snowflakeProps:Dictionary= new Dictionary(true);
var max_snowsize:Number = .04;
// pixels
var snowflakesCnt:Number = 900;
var oheight:Number;
var owidth:Number;
init();
function init():void {
          owidth = width;
          oheight = height;
          // quantity
          for (var i:int=0; i<snowflakesCnt; i++) {
                    var t:MovieClip = new SnowFlake();//
                    t.name = "snowflake"+i;
                    t.alpha = .2+Math.random()*.6;
                    t.x = -(owidth/2)+Math.random()*(1.5*owidth);
                    t.y = -(oheight/2)+Math.random()*(1.5*oheight);
                    t.scaleX = t.scaleY=.5+Math.random()*(max_snowsize*10);
                    var o:Object = new Object();
                    o.k = 1+Math.random()*2;
                    o.wind = -1.5+Math.random()*(1.4*3);
                    snowflakeProps[t] = o;
                    addChild(t);
                    snowflakes.push(t);
          addEventListener(Event.ENTER_FRAME, snowFlakeMover);
function shakeUp():void{
          for (var i:int=0; i<snowflakes.length; i++) {
                    var t:MovieClip = snowflakes[i] as MovieClip;
                    t.x = -(owidth/2)+Math.random()*(1.5*owidth);
                    t.y = -(oheight/2)+Math.random()*(1.5*oheight);
function snowFlakeMover(evt:Event):void {
          var dO:MovieClip;
          var o :Object;
          if(visible && parent.visible){
          for (var i:int = 0; i < snowflakes.length; i++) {
                    dO = snowflakes[i] as MovieClip;
                    o = snowflakeProps[dO];
                    dO.y += o.k;
                    dO.x += o.wind;
                    if (dO.y>oheight+10) {
                              dO.y = -20;
                    if (dO.x>owidth+20) {
                              dO.x = -(owidth/2)+Math.random()*(1.5*owidth);
                              dO.y = -20;
                    } else if (dO.x<-20) {
                              dO.x= -(owidth/2)+Math.random()*(1.5*owidth);
                              dO.y = -20;

Answer 1

My tree movieclip is named Bitmap2 and my logo movieclips (actually in 4 pieces that fly together) are Object1, Object2, Object3, and Object4.
I'm getting an 1120 error (undefined property).
Here's what I've got so far (and I apologize for any errors I'm making here, I'm a beginner) :
addChild(Bitmap2);
var snowflakes:Array = new Array();
var snowflakeProps:Dictionary= new Dictionary(true);
var max_snowsize:Number = .04;
// pixels
var snowflakesCnt:Number = 900;
var oheight:Number;
var owidth:Number;
init();
function init():void {
          owidth = width;
          oheight = height;
          // quantity
          for (var i:int=0; i<snowflakesCnt; i++) {
                    var t:MovieClip = new SnowFlake();//
                    t.name = "snowflake"+i;
                    t.alpha = .2+Math.random()*.6;
                    t.x = -(owidth/2)+Math.random()*(1.5*owidth);
                    t.y = -(oheight/2)+Math.random()*(1.5*oheight);
                    t.scaleX = t.scaleY=.5+Math.random()*(max_snowsize*10);
                    var o:Object = new Object();
                    o.k = 1+Math.random()*2;
                    o.wind = -1.5+Math.random()*(1.4*3);
                    snowflakeProps[t] = o;
                    addChild(t);
addChild(Object1);
addChild(Object2);
addChild(Object3);
addChild(Object4);
                    snowflakes.push(t);
          addEventListener(Event.ENTER_FRAME, snowFlakeMover);
function shakeUp():void{
          for (var i:int=0; i<snowflakes.length; i++) {
                    var t:MovieClip = snowflakes[i] as MovieClip;
                    t.x = -(owidth/2)+Math.random()*(1.5*owidth);
                    t.y = -(oheight/2)+Math.random()*(1.5*oheight);
function snowFlakeMover(evt:Event):void {
          var dO:MovieClip;
          var o :Object;
          if(visible && parent.visible){
          for (var i:int = 0; i < snowflakes.length; i++) {
                    dO = snowflakes[i] as MovieClip;
                    o = snowflakeProps[dO];
                    dO.y += o.k;
                    dO.x += o.wind;
                    if (dO.y>oheight+10) {
                              dO.y = -20;
                    if (dO.x>owidth+20) {
                              dO.x = -(owidth/2)+Math.random()*(1.5*owidth);
                              dO.y = -20;
                    } else if (dO.x<-20) {
                              dO.x= -(owidth/2)+Math.random()*(1.5*owidth);
                              dO.y = -20;
Thanks a million.