Stop embedded youtube iframe?

I'm using YouTube iframe to embed videos on my site.

<iframe width="100%" height="443" class="yvideo" id="p1QgNF6J1h0"              src="http://www.youtube.com/embed/p1QgNF6J1h0?rel=0&controls=0&hd=1&showinfo=0&enablejsapi=1"              frameborder="0" allowfullscreen></iframe>

And i have multiplie videos on the same page.

I want to stop all of them or one of them in a click of a button using javascript or so.

Is it possible?

UPDATE:

I tried what Talvi Watia said and used:

$('#myStopClickButton').click(function(){  $('.yvideo').each(function(){    $(this).stopVideo();  });});

I'm getting:

Uncaught TypeError: Object [object Object] has no method 'stopVideo'