[Zope] Force reloading of a zope form?

[Patrick Price]

I am trying to set up a web site where I can choose different templates 
to change the style of the site.  I store the template name in a browser 
cookie.  All my documents/forms use the cookie to determine which 
template to render the site with.

My selection mechanism is  a DTML document named index_html which 
contains href links.  These links call itself (index_html) with a 
template=n value tacked onto the URL eg: <a 
href="index_html?template=2">Use Template #2</a>

I set the cookie if the "template" value is present when the document  
is called.

The overall flow is:
  1: document  loads the original template1, based on pre-existing 
cookie, or default template if none
  2: I select a new template with href link
  3: link calls the document again (which still loads the original 
template based on as-yet unchanged cookie)
  4: the document sets the cookie value to the new template setting

Now I need to reload the form so it can re-read the cookie and use the 
new template based on my selection.  The problem is that I have to 
reload the form manually, to get the new template to load based on the 
new cookie setting.  

If there is a "form reload" method that would solve my problem. 
 Otherwise all I can think to do is have a DTML method for each template 
I have to set the cookie and then have that method reload the index_html 
form, where the selection was made from.

Hope this makes sense.  Can anyone help?

Thanks,
 Patrick Price