title: Get the value of -webkit-transform of an element with jquery
body: <p>I'm manipulating a div with the new cool css3 way of doing a transform like this:</p>
  
  <pre><code>$("#thediv").css("-webkit-transform","translate(-770px, 0px)");
  </code></pre>
  
  <p>Later on in the script I thought to get the value of the transform like this:</p>
  
  <pre><code>$("#thediv").css("-webkit-transform");
  </code></pre>
  
  <p>It returns a matrix like this: <em>matrix(1, 0, 0, 1, -770, 0)</em></p>
  
  <p>What I can't figure out is how to get the 5th value (-770) of this matrix...</p>
  
  <p>Any suggestions?
  Thanks!</p>