title: Alert message if tolerance conditions not met
body: <p>I am using <code>tolerance: "fit"</code> for my droppable div which works perfectly.
  it drops only when the draggable object fits the droppable div.</p>
  
  <pre><code>$('#drag').draggable({ revert: "invalid"});
      $('#drop').droppable({ tolerance: "fit" });
  </code></pre>
  
  <p>What I want is , I want to alert a message if user drops the draggable div which is not fit to droppable , Saying  "<em>Please drop object within the Container</em> ". Any idea how to do it ? I found nothing regarding this.</p>
  
  <p><a href="http://jsfiddle.net/jWNkh/2/" rel="nofollow">Small Demo</a></p>