event complete not firing in browser

Hi

Using flash builder am working on my project. Its working on locally... once i moved to server its not working here the my code.

public var loader:UILoader;

                    public var imgUrl:String;

                    public var loadBool:Boolean;

                    public function UrlImage(imgUrl:String, width, height)

                    {

                              loader = new UILoader();

                              this.imgUrl = imgUrl;

                              loader.width = width;

                              loader.height = height;

                              loader.scaleContent = true;

                              loader.autoLoad = true;

                              loader.source = imgUrl;

                              this.addChild(loader);

                              loader.addEventListener(Event.COMPLETE, completeHandler);

                    }

                    public function completeHandler(e:Event):void

                    {

                              Bitmap(loader.content).smoothing = true;

                    }

Thanks in advance

Chandu