XML problem on click of hotspot

Hi all.

Just a little help with some XML stuff.

What I have is a collection of postcodes, by which I will have a series of hotspots. I could not add this is an array, because the postcodes are unique.

So when I click on a postcode I would like to load the node related to it into my text area.

I am having some difficulties, can anyone help me out?

T