title: jQuery date picker multi select and unselect
body: <p>Is it possible to enable jquery UI (datepicker) to enable multi select and unselect ?</p>
  
  <p>example of datepicker i am using. <a href="http://jqueryui.com/datepicker/" rel="nofollow">http://jqueryui.com/datepicker/</a></p>
  
  <p>i have got a requirement as to enable a datepicker to select multiple dates and i am wondering how to implement a similar one. 
  Your prompt reply is greatly appreciated.
  Please give me some examples
  Thanks</p>