title: php echo statement if screen is a certain size
body: <p>I have a series of jQuery scripts on my site that I want to only run if the users screen width is greater than 960px. I know that you can't detect screen size using php but is there a way to create something to this effect:</p>
  
  <pre><code>&lt;? php 
  if [METHOD TO DETECT SCREEN SIZE] &gt; 960px {
  echo '&lt;script src="js/nbw-parallax.js" type="text/javascript"&gt;&lt;/script&gt;';
  }
  ?&gt;
  </code></pre>