title: Firefox add-on get the tab body content
body: <p>Hello everyone i have an question about firefox add-on:</p>
  
  <p>How i can get the body content from a tab, for example.</p>
  
  <pre><code>var content = require("tabs").activeTab.documentContent.body.innerHTML;
  </code></pre>
  
  <p>Thanks alot.</p>