One XML for whole project?

Question

I am dynamically loading images into my project using xml. If possible I'd like to use one xml file for the whole project and target different parts of the xml file. How can I target different parts (or children?, please correct me if I am wrong) of the xml file?
Ex:
<murals>
     <image .....>
</murals>
<trompe>
     <image .....>
</trompe>
Only access the images in the murals section when wanted and only access the images in trompe when wanted and so on.
THANKS!

Answer 1

Well, this is what I have here. I don't know if it is E4X or not.
var imageLoader:Loader;
var xml:XML;
var xmlList:XMLList;
var xmlLoader:URLLoader = new URLLoader();
xmlLoader.load(new URLRequest("xml/gallery.xml"));
xmlLoader.addEventListener(Event.COMPLETE, xmlLoaded);
function xmlLoaded(event:Event):void{
    xml = XML(event.target.data);
    xmlList = xml.children();
.....other stuff