/// <summary>
/// Ensure the border to the auxillary box always contains the contents of the box
/// </summary>
protected void UpdateAuxillaryBoxBorder()
{
//If there is already a border, remove it
if (AuxillaryBoxBorder != null && AuxillaryBox.IndexOfChild(AuxillaryBoxBorder) > 0)
{
AuxillaryBox.RemoveChild(AuxillaryBoxBorder);
}
//Create a new border that contains the contents of the box
AuxillaryBoxBorder = PPath.CreateRectangle(Background.Bounds.Left, Background.Bounds.Bottom, Background.Bounds.Width, AuxillaryBox.UnionOfChildrenBounds.Height);
AuxillaryBox.AddChild(AuxillaryBoxBorder);
AuxillaryBoxBorder.MoveToBack();
}