title: javascript timestamp doesn't works in FireFox and in IE
body: <pre><code>var target_date = new Date("2014-10-12 15:33:08").getTime();
  console.log(target_date);
  </code></pre>
  
  <p>I have this little code. In Opera and in chrome it's work fine. 
  In firefox and in IE it returns NAN
  How can I fix it?</p>