[Zope] Capturing a Varied Variable

[Ben Ocean]

Hi;
An image that is called in a css document is generated by a certain dtml 
method which randomly calls other dtml methods (which each reference a 
specific image) out of a certain folder. I need to reference the name of 
the method in the framed document; however, if I simply re-call the dtml 
method that randomly calls the others, I'll end up with 2 different 
documents (and therefore names), and I must reference the same document. 
How do I do this?
TIA,
BenO