title: How display error when there is no match using JQuery autocomplete?
body: <p>JQuery has a cool <a href="http://jqueryui.com/demos/autocomplete/" rel="nofollow">autocomplete function</a>. What I want is if there are no matching entries from the autocomplete  (for example user types in zadasdasda) to flag this to the user because the user can only enter something in this particular field that matches a value from a set of values in database.  Before someway says just use a picklist, there are too many possible entries (> 1,000).  I just want to check there is nothing already out there to do this in JQuery before I write a callback to do it myself.  I can't find anything just want to double check.</p>
  
  <p>Thanks</p>