Nút Thu/Phóng video Youtube

<style>.ytb-1{background: transparent 
url(http://i24.servimg.com/u/f24/16/04/03/80/zoomin10.gif)
no-repeat;height: 32px; width: 32px;}.ytb-2{background: transparent 
url(http://i24.servimg.com/u/f24/16/04/03/80/zoomou11.gif)
no-repeat;height: 32px; width: 32px;}.bytbv{width: 640px; height:
390px;}</style><script
type="text/javascript">$(function(){$('<div id="bvvi"
class="ytb-1"></div>').insertBefore('.postbody embed');
jQuery('.postbody #bvvi').click(function() { jQuery('.postbody
#bvvi').toggleClass('ytb-2'); jQuery('.postbody
embed').toggleClass('bytbv'); }); });</script>

<style type="text/css">
.ytb,.ytbc{
  background: transparent url(http://i24.servimg.com/u/f24/16/04/03/80/zoomin10.gif)
  no-repeat;
  height: 32px;
  width: 32px}
.ytbc {
  background-image: url(http://i24.servimg.com/u/f24/16/04/03/80/zoomou11.gif)
}
.bytbv{
  width: 640px;
    height: 390px}
</style>
<script type="text/javascript">
$(function(){
  $('<div class="ytb"></div>').insertBefore('.postbody embed');
  $('.postbody .ytb').click(function() {
      $(this).toggleClass('ytbc');
      $(this).next().toggleClass('bytbv');
    });
});
</script>