title: Load iframe website in background
body: <p>I want to load a seperate website (eg. a wikipedia article) in an iframe on a web page. The Iframe is not visible until the user clicks a "show" button, but when he does the whole page freezes a second or two until the iframe comes up.
  Is it possible to load the iframe in the background without the site freezing up, and if Not, then how can you show a loading gif while the iframe loads?</p>