On Page Refresh, Rollovers Not Working

I’m having a strange problem. I have created 12 buttons, and each of them changes the text of a textField titled nameText on rollover. Right now the y property of the textField is set to 50 and the rollovers work, however when I change the y property of the textField to stage.stageHeight - 80 the rollovers dont work. When I view the page, the rollovers work the first time, but when I refresh the page in IE they stop working. Any ideas?

Here’s a snippet of my code:

 
package {
 import flash.display.MovieClip;
 import flash.events.*;
 import flash.net.*;
 import flash.text.*;
 import fl.motion.easing.*; 
 import gs.TweenLite;
 import gs.TweenMax;
 import noponies.video.NpVideoProvider;
 import noponies.display.NpFSObjectResize;
 import noponies.events.NpVideoProviderEvent;
 
 public class BasicFullScreen extends MovieClip {
  //--------------------------------------
  // PRIVATE VARS
  //--------------------------------------  
  private var vid:NpVideoProvider;
  private var i:int;
    private var button:MovieClip;
  //private var clickNow:MovieClip;
  var xmlURL:URLRequest;
  var urlLoader:URLLoader;
  var xmlDesigner:XML;
  var designerList:XMLList;
  var designerName:String;
  var nameText:TextField;
  var nameFormat:TextFormat;

  //--------------------------------------
  // CONSTRUCTOR 
  //--------------------------------------
  public function BasicFullScreen(){
   
   initVideo();
   initXML();
   initText();
   stage.addEventListener(MouseEvent.MOUSE_MOVE,mouseMoveHandler);
   
  }
  
  //---------------------------------------
  // LOAD VIDEO
  //---------------------------------------  
  private function initVideo():void{
   vid = new NpVideoProvider();
   addChildAt(vid, 0)
   //set video to play at start
   vid.playAtStart = false;
   //will attempt to play as soon as it loads any data
   vid.loadPointToPlayAt = 100
   //set it loop
   vid.loopingPlay = false
   //dont need metadata, as we are stretching this to fullscreen
   vid.ignoreMetaData = false
   vid.vidSmoothing = true;
   //buffer the playback slightly
   vid.vidBuffer = 1
   //add an event listener so we can kill the audio. You must wait to you have video data before you can set its audio props
   vid.addEventListener(NpVideoProviderEvent.PLAYING, killAudio);
   //load the video file
   //streaming
   //vid.loadFile("rtmp://127.0.0.1/oflaDemo/AdobeMax2007_720p_500.flv");
   //progressive
   vid.loadFile("videos/Rain.flv");
   //---------------------------------------
   // MAKE VIDEO FULLSCREEN
   //---------------------------------------
   //This is where we add our video object to our fullScreenResizeObject class
   var fs:NpFSObjectResize = new NpFSObjectResize();
   fs.addResizeTarget(vid);
  }
  
  //litener for "PLAY" event
  private function killAudio(event:NpVideoProviderEvent):void{
   vid.soundVolume = 0
  }
 
  //Mouse Move Video Play
  private function mouseMoveHandler(event:MouseEvent):void
  {
   //trace((event.stageX)/stage.width);
   vid.seekAsPercent((event.stageX)/stage.width);
   event.updateAfterEvent();
   //clickNow.x = mouseX;
   //clickNow.y = mouseY - 30;
  }
  
  //Create Text Boxes
  private function initText():void
  {
   nameFormat = new TextFormat();
   nameFormat.color = 0xFFFFFF;
   nameFormat.size = 70;
   nameFormat.font = "Continuum Light";
   
   nameText = new TextField();
   nameText.defaultTextFormat = nameFormat;
   nameText.selectable = false;
   nameText.x = 10;
   nameText.y = 50;
   nameText.antiAliasType = "normal";
   nameText.autoSize = TextFieldAutoSize.LEFT;
   nameText.alpha = 0;
   addChild(nameText);
  }
  
  //Called in Constructor to init xml list
  private function initXML():void
  {
   xmlURL = new URLRequest("designers.xml");
   urlLoader = new URLLoader(xmlURL);
   urlLoader.addEventListener("complete", xmlLoaded);
  }
  
  //XML on Load complete function
  private function xmlLoaded(evt:Event):void
  {
   xmlDesigner = new XML(urlLoader.data);
   designerList = xmlDesigner.designer;
   //trace(xmlProjects..project.(@category == "Print").image);
   for each(var designer:XML in designerList)
   {
    //trace([EMAIL="designerList.designer.@name"]designerList.designer.@name[/EMAIL] + "<br>");
    //trace([EMAIL="designer.@name"]designer.@name[/EMAIL]);
    //trace(designer.image);
    button = new MovieClip();
    button.graphics.beginFill(000000);
    button.graphics.drawRect(0,0,(stage.stageWidth/30),(stage.stageHeight));
    button.graphics.endFill();
    button.x = (stage.stageWidth/12)*i+(stage.stageWidth/40);
    button.y = 0;
    button.alpha = 0;
    button.designerName = [EMAIL="designer.@name"]designer.@name[/EMAIL];
    button.addEventListener(MouseEvent.MOUSE_OVER, doMouseOver);
    button.addEventListener(MouseEvent.MOUSE_OUT, doMouseOut);
    addChild(button);
    i++;
   }
   
  }
  
  private function doMouseOver(event:MouseEvent):void
  {
   //trace(event.target.designerName);
   nameText.text = event.target.designerName;
   TweenMax.to(nameText, 0.005, {blurFilter:{blurX:10, blurY:10}, ease:Back.easeIn});
   TweenLite.to(nameText, 0.005, {alpha:1, ease:Linear.easeOut, onComplete:toRed});
   //TweenLite.to(clickNow, 0.05, {alpha:1, ease:Linear.easeOut});
   
   function toRed()
   {
    TweenMax.to(nameText, 0.05, {blurFilter:{blurX:0, blurY:0}, ease:Back.easeIn});
   }
  }
  
  private function doMouseOut(event:MouseEvent):void
  {
   //trace(event.target.designerName);
   TweenLite.to(nameText, 0.5, {alpha:0, ease:Linear.easeOut});
   TweenMax.to(nameText, 0.1, {blurFilter:{blurX:0, blurY:0}, ease:Back.easeIn});
   //TweenLite.to(clickNow, 0.05, {alpha:0, ease:Linear.easeOut});
  }
 }
 
}