title: Change iframe attribute with jquery
body: <p>I have something like so:</p>
  
  <pre><code>        &lt;iframe id="frame" width="200" height="150" 
      src="http://www.youtube.com/embed/GiZGEFBGgKU?rel=0&amp;
  amp&amp;iv_load_policy=3;autoplay=1" frameborder="0" allowfullscreen&gt;&lt;/iframe&gt;
  </code></pre>
  
  <p>And I want to change the width and height using jquery I try:</p>
  
  <pre><code>$("#frame").setAttribute("width", "50");
  $("iframe").setAttribute("width", "31");
  </code></pre>
  
  <p>None of them work</p>