I have embeded a youtube video on my site here http://jdwebmanagement.com/draft/united_football/ with this code:
<iframe width="664" height="390" src="https://www.youtube.com/v/JfYn1og9p-U?autoplay=1&version=3&loop=1&playlist=JfYn1og9p-U&rel=0" frameborder="0" allowfullscreen></iframe>
The problem is that the "Play Now!" button displays under the video. Also on IE when you click the first thumbnail of the carousel below, the modal displays under the video.