[Zope] Getting a navigational guide (tree) to persist?

[Albert Kinderman]

I am a new user of zope (this is my 4th day).  I am building a web-site
for the faculty governance structure of my university.  I have an
overall top folder, faculty governance, three sub folders, senate,
executive committee, and standing committees (which contains 10
committee folders).  Each folder (senate, exec comm, and the 10 standing
committees) contains subfolders for agendas, minutes, and membership.  

Each folder contains an index_html that refers to the
standard_html_header.  The standard_html_header is in the top folder and
is set up as a table with the first column a sidebar, standard_choices,
consisting of

<p>Navigational Guide </p>
<A HREF=
  "<!--#with "PARENTS[-1].facultygov"-->
   <!--#var absolute_url-->
   <!--#/with-->
">Faculty Governance</A>

<!--#tree
  expr="PARENTS[-1].facultygov"
  branches_expr="objectValues('Folder')"-->
<A HREF="<!--#var absolute_url-->"><!--#var title--></A>
<!--#/tree-->

What baffles me is that if I navigate from the constructed tree in the
sidebar (using the + marks to open the tree to display the subfolder of
interest) and make a selection by clicking on a subfolder, the opened
tree sometimes collapses back to a closed tree with just the three top
level choices showing and sometimes stays open, showing everything that
was displayed before I clicked on the subfolder.

I would like the tree to remain in the state that exists at the time a
user clicks on a particular folder.

thanks for your help.

Al 

-- 
Albert Kinderman          California State University, Northridge
Department of Management Science        albert.kinderman@csun.edu