title: Click with middle button can't load onclick function on Firefox
body: <p>I'm already search a lot but still can't find the right answer.
  I wonder why middle click (scroll button) can't load <code>onclick function</code> on Firefox only while on Chrome it works. So instead of <code>onclick function</code> it shows <code>href link</code> which is <code>javascript:void(0)</code></p>
  
  <pre><code>&lt;a  href="javascript:void(0);" onclick="open_tab();"&gt;
  </code></pre>
  
  <p>Javascript</p>
  
  <pre><code>function open_tab(){
          my_tab=window.open('http://www.google.com/', my_tab);                                   
  }
  </code></pre>
  
  <p>Tell my why. Thanks a lot.</p>