[Zope] including folder in all requests

[Marko Kruijer]

I am in the process of designing a zope product, and i want to inlcude 
the same kind of 'functionality' that Plone offers with its skins.

I have a folderish object where i have a number of subfolders, scripts etc.

Suppose I have a folder named 'custom' in my base folder, i then want 
all other object to be able to access the objects in this folder without 
using URL's to do this.

Here's what I've tried so far:

- use __before_publishing_traverse__ to modify the 
TraversalRequestNameStack.
This works pretty wel, but there is a nasty side effect, the management 
pages also get effected by this, and thus it is not usable.

- user __bobobase_traverse__ to see if an object exists, and if not 
check the 'custom' folder and then rerutnr the object from there.
 This works only in the root folder of my site, if i go to a subfolder i 
get 'not found' for every call i make to a object existing in the custom 
folder.

I've been looking at the plone source code to see how they've done this, 
but I can't seem to figure out where this 'magic' is happening.

Can someone point me in the right direction? I've been trying different 
options for a few days now and I think I'm possibly looking in the wrong 
directions.