title: Jquery setting .attr to an iframe scrolling=yes
body: <p>I have an iframe with "scrolling="no"" and a button that sets iframe attribute to scrolling="yes", when it's needed.</p>
  
  <pre><code>    $("#button3").click(function(){
      $( "#iframe_id" ).attr( "scrolling", "yes" );});    
  </code></pre>
  
  <p>But the scroll bar doesn't appear, when i press the button3, only after i refresh the iframe.
  How to force the srcoll bar appear instantly? </p>
  
  <p>How it works now: 
  <a href="http://jsfiddle.net/77van/k8GhZ/1/" rel="noreferrer">http://jsfiddle.net/77van/k8GhZ/1/</a></p>