Hi, I played around a little bit with the Tree at home. I will try to summarize it. When you hit the +/- signs of a tree, you are actually hitting a <a href> Where the link contains some information of the tree. When this is replaced in the lib/python/TreeDisplay/TreeTag.py by a form <form action= > <input type=hidden name=tree-e value= > <input type=image ... > where action point to the Tree page and the tree-e variable contains the tree information. The image is then used as a map and is a replacement of the submit button. Trouble is that the tree-e information contains something like "abunchOfCharacters#1" The "#" character is transformed into something %06 by the post-encoding. And the whole stuff does not work anymore. should I also change the parsing of the tree information? My conclusion is that a tree in zope1.3 cannot work together with a form. Vanroose Wim