public override void SetPosition(IFrame parent, double xOff, double yOff, double width, double height)
{
base.SetPosition(parent, xOff, yOff, width, height);
this.innerPage.SetPosition(
this.Frame,
BorderSize,
BorderSize + ExtraTopSize,
width - (BorderSize * 2),
height - (BorderSize * 2 + ExtraTopSize));
this.Frame.SetFrameLevel(parent.GetFrameLevel() + 1);
}