The following link implements a slider, and I thought such a metaphor  
would be a good one for any number of library interfaces:

   http://librarycopyright.net/digitalslider/

   1. For example, it could be used to "gauge" a Find More Like This  
One function. Move slider up or down. Return a higher or lower  
integer. Use integer to set an upper bounds or lower bounds of items  
returned from a call to xISBN or LibraryThing ISBN.

   2. Another example might be with Did You Mean? Move slider up or  
down to determine the number of possible spelling (or thesaurus)  
suggestions returned.

   3. Here's a third one. Move slider to show more or fewer details  
from a bibliographic records. At one end of the spectrum is just  
identifier. At the other end of the spectrum is a full record.

I think the idea of a slider is cool as well as kewl. How could I  
implement something like this easily?

-- 
Eric Lease Morgan
University of Notre Dame