title: Change AS3 UILoader component registration point
body: <p>I want to load a lot of photos use UILoader component, and I have to change the registration point, so how can I do that?
  It's there any code for that?</p>
  
  <pre><code>import flash.utils.Timer;
  import flash.events.TimerEvent;
  import flash.events.MouseEvent;
  import flash.events.Event;
  import fl.containers.UILoader;
  import flash.text.TextField;
  import flash.display.SimpleButton;
  import fl.transitions.Tween;
  import fl.transitions.TweenEvent;
  import fl.transitions.easing.*;
  stage.colorCorrection = ColorCorrection.ON;
  
  var myImage:String = "smallWildlife/00.jpg";
  var request:URLRequest = new URLRequest(myImage);
  uiLoader.addEventListener(Event.COMPLETE, completeHandler);
  uiLoader.addEventListener(ProgressEvent.PROGRESS, progressHandler);
  uiLoader.load(request);
  
  function progressHandler(event:ProgressEvent):void
  {
  
  status_txt.text = "Percentage Loaded:" + Math.round(event.target.percentLoaded);
  }
  
  function completeHandler(event:Event):void
  {   
  uiLoader.x = stage.stageWidth/6 - uiLoader.content.width/6;
  uiLoader.y = stage.stageHeight/100 - uiLoader.content.height/700;
  new Tween(uiLoader,"rotationX",Elastic.easeOut,90,0,4,true);
  }
  
  next_btn.addEventListener(MouseEvent.CLICK, nextImage);
  
  //variable is a container that holds some value...;
  var imageNumber:Number = 0;
  
  function checkNumber():void
  {
  next_btn.visible = true;
  back_btn.visible = true;
  //If the imageNumber is = 58, then do something...
  if (imageNumber == 58)
  {
      trace(imageNumber);
      next_btn.visible = false;
  }
  //if the imageNumber is = 1, then don't show the back button
  if (imageNumber == 0)
  {
      trace(imageNumber);
          back_btn.visible = false;
  }
  }
  checkNumber();
  
  function nextImage(evtObj:MouseEvent):void
  {
  //Adding to the current value +1
  imageNumber++;
  uiLoader.source = "smallWildlife/0" + imageNumber + ".jpg";
  checkNumber();
  }
  
  back_btn.addEventListener(MouseEvent.CLICK, backImage);
  
  function backImage(evtObj:MouseEvent):void
  {
  //Subtract 1 from the current value
  imageNumber--;
  uiLoader.source = "smallWildlife/0" + imageNumber + ".jpg";
  checkNumber();
  }
  
  stop();
  </code></pre>
  
  <p>Please help me!
  I need make my gallery phose in the center.</p>