ActionScript 3.0 :: Load Different Tags Of XML On A Press Of A Button

I find it hard to think of a way to load a specific part of my XML when I press a specific button. I'll try to explain this as best as I can:

I am working on an App in which you can chose a character from a big list. When you press lets say character A you get a popup with info about character A. There is a button in here that will popup the art related to this specific character and this art will be added in unique movieclips so I can use each movieClip in a for loop to create an infinite scroll. Now the problem is there are 80+ different characters (and increasing every 2 weeks) and each character has an average of 4 arts, so giving them unique classes and solving the infinite scroll this way would generate A LOT of code. So I started thinking lets use XML. how to load just or show just the images related to the character you pressed.

I was thinking dividing the XML up like this:

PHP Code:

//XML
<CHARACTERS>
<CHARACTER A="URL" />

[Code]....

But how can I determine, at the specific press of a button, to load the unique part of this XML?

Wow that was a lot of text I hope I kinda made myself clear, and if I didn't I'll add some drawings to try to be more clear