private void second_material_pic_MouseEnter(object sender, MouseEventArgs e)
        {
            if (mttarget2 == 0)
            {
                return;
            }
            prop_smdetail a = new prop_smdetail(); a.pos = mttarget2; a.updatemess();

            prop2frame.Visibility = Visibility.Visible; prop2frame.Navigate(a);
        }
        private void tomaterial_MouseEnter(object sender, MouseEventArgs e)
        {
            if (select == 0)
            {
                return;
            }
            prop_smdetail a = new prop_smdetail(); a.pos = target[select]; a.updatemess();

            prop2detail.Visibility = Visibility.Visible; prop2detail.Navigate(a);
        }