title: Datepicker with warning message?
body: <p>Can a little warning message be applied to a datepicker that can be shown if the date selected falls between TODAY and a numeric value of days in the future ie +7 ?</p>
  
  <p>I've tried to set a minDate and maxDate but that only disallows any selection of dates outside those parameters. Whilst this kind of worked it had a flaw.. a user can delete the text in the field and manually type in their own date.. which doesn't get validated.</p>
  
  <p>Also, I still would like everydate to be selected.. but if it is within the period set, that's when I'd like the message to be shown.</p>
  
  <p>Here's what I'm using:</p>
  
  <pre><code>&lt;script&gt;
       $(function() {
            $( "#delivery_date" ).datepicker({ minDate: "+5D", maxDate: "", dateFormat: "dd/mm/yy" });
       });
   &lt;/script&gt;
  
   &lt;input type="text" id="delivery_date" name="delivery_date" required  /&gt;
  </code></pre>