function animationHandlerFn(ev) {
  // check animation name
  if (ev.animationName !== 'mui-node-inserted') return;

  var el = ev.target;

  // iterate through callbacks
  for (var i=nodeInsertedCallbacks.length - 1; i >= 0; i--) {
    nodeInsertedCallbacks[i](el);
  }
}
Execute muiNodeInserted callbacks
@param {Event} ev - The DOM event.