Embedded video thumb has been displayed on all overlay windows I have been created a block to display YouTube videos on my website ,When ever i tried to open admin windows that video thumbnail has been displaying on every overlay windows how can i disable that any suggestions ?



Screenshot :
You could try CSS z-index Property


  Definition and Usage
  
  The z-index property specifies the stack order of an element.
  
  An element with greater stack order is always in front of an element
  with a lower stack order.
  
  Note: z-index only works on positioned elements (position:absolute,
  position:relative, or position:fixed).


Try setting a higher value to the overlay or a lower value to the youtube player.