javascript change video source dynamically

Changing the Image. The web is getting beautiful with new user interfaces based in HTML5; turn.js is the best fit for a magazine, book or catalog based in HTML5. An incrementally adoptable ecosystem that scales between a library and a full-featured framework. HTML5 video portability is still a very difficult matter. The JavaScript consists of two functions: getDocHeight and setIframeHeight. I want to leave the Start/Pause button; change the digital progression indicator to only show the ‘remaining’ time left in the song; and make it where the width of the Progression & Volume sliders can be set; then the overall width would be a sum of what’s set for the 4 elements of the control bar. So I thought of creating the element of the