title: ExtJS - Embed html pages inside tabs
body: <p>I'm using this group tabs example from ExtJS:
  <a href="http://dev.sencha.com/deploy/dev/examples/grouptabs/grouptabs.html" rel="nofollow">http://dev.sencha.com/deploy/dev/examples/grouptabs/grouptabs.html</a></p>
  
  <p>What do I need to do so when I click a link on one of the left tabs to embed an existing html page inside the main body on the right?Thank you!</p>