[Zope] Capturing a Varied Variable

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