Kirupa XML drop-down menu


I’m really stuck and was hoping someone wouldn’t mind helping out a n00b. I’ve been doing the tutorial on the XML drop-down menu here and have got it all working fine as far as the tute goes, I’m just having trouble (due to no XML knowledge) targeting the variables into a frame, as oppsed to poping up a new window.

if anyone could let a few words of advice,or point me in the right direction, it would be greatly appriciated!!!