Hallo Dieter,

again many thanks for helping.
The thing with the tpId has exactly been the problem.
Adding an attribute "tpId" to the class "TestBranch" with the same content as id
everything works fine.

Thank you,
Ulla.

Dieter Maurer wrote:

Ulla Theiss wrote at 2005-3-8 22:06 +0100:

...
I've tested the whole day along the ids and the behaviour is still the same.
They are different. <dtml-var id> proofs.
In the html-sourcecode I've seen 2 things:
1st:  The Name of the Anchor is the same for each branch
2nd: The Href for all branches of one layer is exactly the same, but 
different from the other layers.


Maybe, you should switch from "dtml-tree" to a ZPT based
solution?

I often read recommendations for the "ZopeTree" product.
I use the facilities provides by "ZTUtils" (and you can
find an example use in the PageTemplates examples).


But, when you want to stick with the complex "dtml-tree".

     Looking at the code in "TreeDisplay.TreeTag.Tree.__init__",
     I see that the default for id determination
     is the method "tpId".

     Apparently, "tpId" (or whatever you use as "id" attribute
     for "dtml-tree") return the same value for all siblings.