[Zope] sessions in an iframe

[henk laloli]

Hello,

I am using a session object to store a query string. The query string is 
used for a reload of the same query with two parameters changing their 
value when the user reorders a table column. This works fine under Zope 
2.9.3 in Mozilla. The page on which this query string is stored en taken 
up again is in an iframe. The iframe html resides on a Zope server, the 
parents website's computer is a different one, but in the same domain. 
Now under Firefox the session object still can be referenced, but in 
Internet Explorer the page in the iframe does not reference the session 
object properly. It once records it and then adds the changing 
parameters to it,doubling them and making the SQL query run into an 
error. The url is:
http://www.volkstellingen.nl/nl/gemeenten/ where after a search you can 
reorder table columns by clicking on the headers.
The problem does not occur in IE when the page is used on its own, only
when it is used in an iframe. The question then is: can it be that IE
restricts the session behaviour in this situation? How can I solve it?

Here is the code in a PythonScript, that is called in the search
results html page.

directionDict = {'gemeente':'gm_direction','provincie':'prov_direction',
'begindatum':'bd_direction','einddatum':'ed_direction','amsterdamse_code':'ac_direction'}


if request.SESSION.has_key('firstquery'):
    if request.has_key('sort'): #user sorts column without a new query
       if request.richting == 'ASC':
          value = directionDict[request.sort]
          request.set(value, 'DESC')
          #put all other columns on ASC
          for k,v in directionDict.items():
               if k != request.sort:
                  request.set(v, 'ASC')
       else:
          value = directionDict[request.sort]
          #put all columns on ASC
          for v in directionDict.itervalues():
               request.set(v, 'ASC')

    else: #user does a new query, session object exists
       del request.SESSION['firstquery']
       query = request.QUERY_STRING
       first = request.SESSION['firstquery']=query
       for v in directionDict.itervalues():
           request.set(v, 'ASC')

else:  #first query
    query = request.QUERY_STRING
    first = request.SESSION['firstquery']=query
    for v in directionDict.itervalues():
       request.set(v, 'ASC')


-- 
Henk Laloli