title: Load all iframes on blog asynchronously
body: <p>I run a blog that features lots of videos and other framed content.</p>
  
  <p>a typical blogpost body i pull from my database looks like this:</p>
  
  <pre><code>&lt;p&gt;some text&lt;/p&gt;
  &lt;iframe src="http://example.com" width="400" height="300"&gt;&lt;/iframe&gt;
  &lt;p&gt;some text&lt;/p&gt;
  </code></pre>
  
  <p>some posts have 2-3 iframes in them - the starting-page usually features 6-7  iframes.</p>
  
  <p>i'd like to speed up the loading-time of my blog - is there a way i can make all iframes on my starting-page load asynchronously?</p>