Xpath for dynamic image update

Question

I am trying to get the image from the Astronomy Photo of the
Day APOD website to display on our college departments Astronomy
web page. I just need to display the image and not the whole page.
As I was searching for ways to scrape dynamic images I came
across the ability for Firebug to extract the xpath from any block
of html. In the case of apod the xpath for image is this:
/html/body/center/p[2]/a/img
Could I use Spry to display the image of the day using xpath
or is the wrong way to accomplish this?

Answer 1

after loading an image you can get its contentWidth and
contentHeight, with this you then calculate the aspect ratio and
resize your container accordingly so that there is no white space.
i.e
MyImg.addEventListener(Event.COMPLETE,UpdateContainer)
private function UpdateContainer(e:Event):void
var AspectRatio : Number =
MyImg.contentWidth/MyImage.contentHeight;
MyContainer.width = MyContainer.height*AspectRatio;
MyImg.width = MyContainer.width;
MyImg.height=MyContainer.height;
MyContainer.addChild(MyImg);
the assumption here is you are basing the container height as
the fixed constant obviously you can set width as the fixed
constant and adjust height by aspect ratio