You could do all this with Javascript and not have to worry about mucking around with wwwoptions or any of that messy stuff. Just create a static JSON or XML file in the webpac directory containing a list of all the classification names and their associated call number ranges (as detailed or as general as you want it to be). Write some Javascript code that looks at each call number on a page, matches it to a LC classification name based on your definitions file, and then append that name next to the call number (or wherever you might want it). If you have "impure" call numbers, such as prepending REF to reference titles, you can use regular expressions or just basic string matching to remove those from the beginning of the call numbers. But as Kyle mentioned, this data might not be especially helpful to users. A more robust option would be to connect to WorldCat API or a similar service to fetch LC Subject Headings for each title and display that rather than the classification heading. Maybe one day webpacs will have a nice templating system where you can just use tags like {callnumber} or {marc650}. Josh Welker -----Original Message----- From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of Kyle Banerjee Sent: Wednesday, December 04, 2013 1:10 PM To: [log in to unmask] Subject: Re: [CODE4LIB] Interested in enhancing call-number browse in Millennium catalog This is going to be tricky. AFAIK, you can't modify the call number result table on the fly without proxying since Mil doesn't let you get at the routine that renders the call numbers. If proxying is not what you had in mind and rendering the call number meanings above the table is acceptable, I suppose you could load a javascript routine in the footer that reads what's been loaded and then puts a call number explanation somewhere near the top. One trick you could use if you wanted it lower is to redefine an image in WWWOPTIONS that contains embedded HTML that renders your value dynamically. As far as I remember, you can break out of image definitions simply by adding a double quote, closing the tag, and inserting whatever script you want, e.g.: BUT_WHATEVER=/screens/image.gif" alt="whatever" border="0" /></a><!cript.... [load or embed whatever you like]...</script><img src="invisible_spacer.gif (note lack of closing quote -- don't forget you broke out of an image tag) As far as a method for getting the data goes, your best option would be to download the linked data from id.loc.gov and extract the ranges which could be processed as strings matched by regex rather than linked data. All processing could be offloaded on the client. But this is horribly hacky and a lot of work for relatively little gain. When you get right down to it, the only purpose of a call number is to physically collocate materials on the shelf and it's not really that useful for search which is why practically no one aside from a few cataloging nerds do call number searches. Plus, anyone geeky enough to do a call number search actually must know what call number range is relevant to their needs. Keep in mind that in many cases, no decent call number exists for a concept and the best one available really is quite crummy so prominently displaying that won't necessarily be a good thing. kyle On Tue, Dec 3, 2013 at 6:35 PM, Harper, Cynthia <[log in to unmask]> wrote: > I'm thinking of trying to enhance the call-number browse pages on a > Millennium catalog with meanings of the classification ranges taken > from the LoC Classification database. > > http://id.loc.gov/authorities/classification.html > > a typical call-number browse page might look like this: > > http://librarycatalog.vts.edu/search~S1?/cBX100.7.B632+1999/cbx++100.7 > +b632+1999/-3,-1,,E/browse > < > http://librarycatalog.vts.edu/search%7ES1?/cBX100.7.B632+1999/cbx++100 > .7+b632+1999/-3,-1,,E/browse > > > > I'd like to intersperse the call-number listing with call-number range > meanings like > > BX100 - Christian denominations - Eastern churches > > Has anyone tried this? Can you point me to the API documentation for > the LC Classification? > > Cindy Harper >