title: How to add cross-domain iframe into SalesForce account details tab?
body: <p>I want to embed iframe section on account tab. I've created simple Visualforce page with
  Standart Controller - Account. </p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;apex:page standardController="Account"&gt;
    &lt;h1&gt;Congratulations&lt;/h1&gt;
    This is your new Page
    &lt;div&gt;
    &lt;apex:iframe src="https://www.facebook.com/" width="800" height="600" /&gt;
    &lt;/div&gt;
  &lt;/apex:page&gt;
  </code></pre>
  
  <p>I've added a VisualForce section into account layout. But I'm unable to see my
  iframe content in the result details page.
  It seems that iframe content is rendered only if my iframe is related to salesforce
  domain. </p>
  
  <p>So my question is: Is it possible to embed external domain page into standard details page?</p>