title: How do you create "aura" effect from the mouse pointer?
body: <p>If you open google chrome and open multiple tabs, you see the effect by hovering over a background tab. The pointer will have an "aura" effect which follows it around.</p>
  
  <p>To clarify, I'm NOT asking how to make the entire tab glow a lighter color, I'm asking how to give the <strong>pointer</strong> the effect within some specified radius of it.</p>