Does not linger any more.
  // var lingerTimeMs = waveLingerOnTouchUp * 1000;

  // If the wave opacity is 0 and the radius exceeds the bounds
  // of the element, then this is finished.
  if (waveOpacity < 0.01 && radius >= wave.maxRadius) {
    return true;
  }
  return false;
};

//
// DRAWING
//

function animateIcon() {
  var el = document.getElementById('button_toolbar0');
  el.classList.add('animate');
  setTimeout(function(){
    el.classList.remove('animate');
    el.classList.toggle('selected');
 