title: How to make KineticJS ToolTip shadow "touch" at the balloon attachment?
body: <p>In the KineticJS Tutorial for ToolTips <a href="http://www.html5canvastutorials.com/kineticjs/html5-canvas-kineticjs-label-tutorial/" rel="nofollow">here</a>,
  a label is shown with a shadow.  Is there a way to add perspective to the shadow so that it and it's shadow-casting balloon touch at the point of attachment to the underlying layer?</p>
  
  <p>Please see google maps for examples of pins that have attached shadows.</p>