[Zope] sorting a table

[Stephan Goeldi]

> Ok...its sort of complicated and there are a lot of supporting files, but
> here are a few of them. You should be able to get the concept from
these...

No, my wish is much simpler:

I have this dtml-in:

<dtml-in blabla sort=sortkey>
  <blabla>
</dtml-in>

I just want to reload the url with something like this:

http://url/blabla?sortkey=title

Is this so complicated? How can I bring a variable from the url to the
dtml-in Tag?