[Zope] find a file's type

is there any dtml codes that can display a file's type? I made a site that allows a person to send up a document file. But in the end what I really wanted is to let people to upload .doc files. Since I didn't put any restriction on it, people always send up a smaller .pdf file instead. So how do I encode my webpage to show the file type of the file that have already being uploaded?? --------------------------------- Start your day with Yahoo! - make it your home page