title: stopPropagation and startPropagation
body: <p>I want to make an additional click handler (client page, cant modify his js/html) and it should work like this in my script:  </p>
  
  <p>1) <code>event.stopPropagation</code> (pause client click propagation)<br>
  2) my function (do my function, when everything is done do next)<br>
  3) <code>event.startPropagation</code> (continue standard client action)</p>
  
  <p>Right now, the first and second work. The third is the problem.<br>
  I know <code>event.startPropagation</code> doesn't exist, but I want something like that.
  Any hints?</p>