change header background image for different folder
 

I use photopost classifieds intergrated with vb 3.8.4, Photopost uses the vb header, so I am trying to work out how to make the background image in the VB header change when it goes to the photopost classifieds folder.

IE:

www.mydomain.com/forum -> header background image 1
www.mydomain.com/classifieds - header background image 2

Is this possible?

Thanks