title: Adjust width and height for iframe depending on screen size
body: <p>I have:</p>
  
  <pre><code>$("#fancybox-manual-b").click(function() {
      $.fancybox.open({
      href : 'iframe.html',
      type : 'iframe',
      padding : 5
      });
  });
  
  &lt;li&gt;&lt;a class="fancybox fancybox.iframe" href="iframe.html"&gt;Iframe&lt;/a&gt;&lt;/li&gt;
  </code></pre>
  
  <p>however I would like to Adjust size of iframe depending on user screen's size.</p>
  
  <p>I was trying something like:</p>
  
  <pre><code>width = $(window).width() -80;
  heigth= $(window).height() -80;
  </code></pre>
  
  <p>Is this correct?, how to use it in code?</p>