[Zope] keeping state of tree over different documents

[Marcus Schopen]

Hello,

I'm trying to do the following:

- documents containing a tree navigation are created dynamically using standard_header and footer.
- the navigation tree is NOT located in a frame but in a table cell which is reloaded together with the rest of the page each time a link in that navigation is selected
- the navigation tree is automatically created by using a dtml-method.

The problem that occurs is, that the tree`s open/close state is not correctly maintained over the different documents. A solution to that might be to append the state of the tree after selection of a link to the it's URL as ?tree-s=.... ; that means pass the future state of the tree to the selected page by using URL-Parameters.

Any ideas how to do that or any other ideas?

Thank you
Marcus