[Zope] delete an absolute folder/file?

Hi! Through a form I pass on a complete url of a folder that needs to be deleted. <!--#call manage_delObjects(REQUEST['url'],REQUEST) --> (where REQUEST['url'] is something like 'http://mydomain.com/folder/foldertobedeleted') is not working, because manage_delObjects needs an id, not a complete url. At least this is my understanding why it is not working. I cannot do <!--#call folder.manage_delObjects('foldertobedeleted',REQUEST) --> because I don't know 'folder' at this point, I can only get it through the form. How can I approach this? Thanks, Floyd