title: Function not defined when running .mb_YTPlayer();
body: <p>I'm trying to create a full page video background using jquery.mb.YTPlayer but I'm getting </p>
  
  <blockquote>
    <p>Uncaught TypeError: undefined is not a function </p>
  </blockquote>
  
  <p><br/>
  Here's my code:</p>
  
  <pre><code>&lt;head&gt;
      &lt;script type="text/javascript"&gt;
          $(document).ready(function () {  
              jQuery(".player").mb_YTPlayer();   
          });
      &lt;/script&gt;
  &lt;/head&gt;
  
  &lt;body id="page-top" data-spy="scroll" data-target=".navbar-custom"&gt;
      &lt;a id="bgndVideo" class="player" data-property="{videoURL:'http://youtu.be/BsekcY04xvQ',containment:'body',autoPlay:true, mute:true, startAt:0, opacity:1}"&gt;
          My video
      &lt;/a&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p><br/> 
  What's causing the undefined error? Is my code malformed?</p>