Private pnlMain As B4XView
...
Private tbTerritories As ToggleButton
...
tbTerritories.Background = bmpGoldButton
...
Private Sub tbTerritories_CheckedChange(Checked As Boolean)
If Checked Then
pnlPowers.BringToFront
Else
pnlPowers.SendToBack
pnlTerritories.SendToBack
End If
End Sub