title: Smoothly resize an UIElement
body: <p>I have a set of <code>Ellipse</code>s on my <code>Canvas</code>.</p>
  
  <p>For the <code>MouseEnter</code> event on each of the ellipses, I would like to resize the element so as to give a magnifying look and feel. </p>
  
  <p>To make it more attractive, I want to make the change gradual (smooth/animated feeling). Any hints are appreciated. </p>