Pictures keep going to the top left.(Actionscript 3) - image

Question

So my project was to make two gallery pages. I called them "gallery1" and "gallery2".The gallery pages each have 5 thumbnails that act like buttons so when you click on em, it opens an swf of the picture. Now the problem is, it always opens on the top left, i want them to be in the middle of the page. This is the code for gallery1. Gallery 2 is the samething but with different pics. b1-b5 are the thumbnails.Please help.
var swfRequest1:URLRequest = new URLRequest("image1.swf");
var swfRequest2:URLRequest = new URLRequest("image2.swf");
var swfRequest3:URLRequest = new URLRequest("image3.swf");
var swfRequest4:URLRequest = new URLRequest("image4.swf");
var swfRequest5:URLRequest = new URLRequest("image5.swf");
var swfLoader:Loader = new Loader();
function opengal(evt:MouseEvent):void
{
var pTarget:String = evt.currentTarget.name;
if(pTarget == "b1")
{
swfLoader.load(swfRequest1);
addChild(swfLoader);
}
else if(pTarget == "b2")
{
swfLoader.load(swfRequest2);
addChild(swfLoader);
}
else if(pTarget == "b3")
{
swfLoader.load(swfRequest3);
addChild(swfLoader);
}
else if (pTarget == "b4")
{
swfLoader.load(swfRequest4);
addChild(swfLoader);
}
else if(pTarget == "b5")
{
swfLoader.load(swfRequest5);
addChild(swfLoader);
}
};
b1.addEventListener(MouseEvent.CLICK, opengal);
b2.addEventListener(MouseEvent.CLICK, opengal);
b3.addEventListener(MouseEvent.CLICK, opengal);
b4.addEventListener(MouseEvent.CLICK, opengal);
b5.addEventListener(MouseEvent.CLICK, opengal);

Answer 1

To set your loaded content in the middle of your stage, you can do like this :
// store files path into an array
var files:Array = ['image01.swf', 'image02.swf', 'image03.swf', 'image04.swf', 'image05.swf'];
var loader:Loader = new Loader();
// use loader.contentLoaderInfo to listen to Event.INIT
loader.contentLoaderInfo.addEventListener(
Event.INIT, function(e:Event):void {
// center our loader
loader.x = (stage.stageWidth - loader.width)/2;
loader.y = (stage.stageHeight - loader.height)/2;
})
addChild(loader);
function opengal(evt:MouseEvent):void {
// here the pTarget should be between 0 and 4 as an array index
var pTarget:int = Number((evt.currentTarget.name).substr(-1, 1)) - 1;
loader.load(new URLRequest(files[pTarget]));
};
...
I hope this can help you.

Answer 2

You have to position your swfLoader in the middle of the screen.
You can do this with this code:
swfLoader.x = (swfLoader.width - stage.stageWidth)/2; // and the y axis in a similar way
The required width and height properties can be retrieved when the contentLoaderInfo dispatches an Event.INIT.