Improve a simple JS function to work with youtube API

I've developed a simple YouTube manager so I can show in a a video from youtube. It has got very few controls (volume off, pause, ...) but I need to improve it, adding, furthermore, these controls: - time bar so user can move backwards/forward as in youtube site. don't mind if it's on a bar supperposed to the video, or in a sepparate div. - volume bar, instead of static buttons to mute, set max volume and set minimum volume. - possibility to change the size of the video, - possibility to change the quality of the video, Please find attached the source code I do have implemented right now. You can see a live instance of this code running at [login to view URL] (user flancer password freelancer). Thanks. Regards. David.