title: Make image draggable but fit exactly parent containment
body: <p>i want to know how work facebook new timeline image reposition with jquery?</p>
  
  <p>this example is similar to facebook image dragging but this is not working with image size limit: <a href="http://oneblackbear.com/draggable/index.html" rel="nofollow">http://oneblackbear.com/draggable/index.html</a></p>
  
  <p>i want same facebook image reposition code.</p>
  
  <p>Thanks</p>