title: attachEvent vs addEventListener vs none
body: <pre><code>var listenjustonce function(callback){ 
  window.top.removeEventListener(&quot;mousemove&quot;,listenjustonce );}
  
  window.top.attachEvent(&quot;mousemove&quot;, listenjustonce ); //or OnMouseMove?:D
  window.top.mousemove = listenjustonce;
  window.top.addEventListener(&quot;mousemove&quot;,listenjustonce );  
   
  </code></pre>
  <p>which of the 3 should be kept/removed?
  <a href="http://caniuse.com/#search=addEventListener" rel="nofollow noreferrer">http://caniuse.com/#search=addEventListener</a></p>
  <p>Actually, anyone bookmarked a table with all the different event-name variants or should I make one?</p>