Xml

I am building a flash application that institutes 19 or so separate XML-parsed dynamic slideshows. Currently I am using something like

this.firstChild.childNodes

to access and accomplish the parsing for each slideshow. Unfortunately this requires a seperate XML file for each slideshow; can anyone enlighten me unto a solution that is something like

slideShowOne.firstChild.childNodes

I have structured the master XML file appropriately, any clues or tips would be much obliged!