在Firefox中显示无属性会停止youtube iframe播放

On the page I have a div with few youtube iframes. On Chrome and Safari I don't have problems with the playback when I slideUp the container. If a video is playing the sound keeps going. When I open the site in Firefox and play a video then slideUp the container the iframe looses state and the sound stops. I know that if I refactor the code and use On the page I have a div with few youtube ifram