How To Create a visual scrub knob a la youtube? (Projekktor Theming)

Hi folks,

I am looking for a way to create a theme that has a visual knob for dragging on the scrub/progrss bar.

in the source code of the controller JS I have found these lines:

        // update knob
        // if (!this._sSliderAct)
        //    this.controlElements['sknob'].css("left", percent+"%");

is it possible that the visual scrubber knob functionality is not present in the current build of projekktor and am I choosing the right approach to implement this?

Could I just insert a div block with the Custom Control template and set the left property according to the current play position? Or is there any easier way to do this?

Cheers and Thanks!
Freundschaft