Interscroller banner is an effective full-view banner in mobile that is fixed to view but under content and displayed only when scrolled over a gap in the content. This effectivly causes a cool semi-parallax effect
Interscroller banner is either 360x640px single image or a responsive html5 banner. Image is set as background, center aligned and scaled to be contained with in screen size. Html5 banner is shown through a responsive iframe but is responsible for its own responsiveness.
Interscroller is fixed to device screen size but different devices and different browsers handle browser- and device-bars differently, avoid designing to the edge. Especially the top and bottom edges. Keep the content as center as possible for the best effect.