private void ImageRelease(object sender, MouseButtonEventArgs e)
{
Border delta = sender as Border;
delta.BorderBrush = new SolidColorBrush(Normal);
delta.ReleaseMouseCapture();
Matrix m = delta.RenderTransform.Value;
float x = (float)((Canvas.GetLeft(delta) + m.OffsetX) / DisplayOptions.DisplayRate);
float y = (float)((Canvas.GetTop(delta) + m.OffsetY) / DisplayOptions.DisplayRate);
Item target = delta.Tag as Item;
arrangement.AdjustItem(target, x, y);
}
