How to hide top bar (title and logo) from Youtube iframe

After the Youtube API update in September, the "showinfo=0" Command stopped working on iframes. Is there any way to hide this top bar (Title, logo, option to share and view later)?

Another question: Is it possible to insert a class within the iframe framework (after # document) or insert css line of code? If so, how could I do with jQuery?

Iframe code:

 <iframe width="100%" height="500" src="http://www.youtube.com/embed/qh67zg05tHM?&amp;theme=dark&amp;autohide=2&amp;modestbranding=1&amp;showinfo=0&amp;rel=0&amp;iv_load_policy=3" showinfo="0" frameborder="0" allowfullscreen="" class="lazyloaded" data-was-processed="true"></iframe>