<MediaElement x:Name="MainMovieStream" Width="220" Height="170" Canvas.Left="0" Canvas.Top="0" Stretch="Fill"

         MarkerReached="MainMovieStream_MarkerReached"/>

<Canvas Width="220" Height="39" Canvas.Left="-325" x:Name="TopOverlay" Canvas.Top="0">

     <Rectangle Opacity="0.4" x:Name="TopRect" Width="220" Height="39" Fill="#FF808080" Stroke="#FF000000"/>

     <TextBlock RenderTransformOrigin="0.496,0.176" x:Name="TopText" Width="215" Height="27"

            FontSize="18" FontWeight="Bold" Foreground="#FFFFFFFF" Text="http://www.google.com"

            TextWrapping="Wrap" Canvas.Left="5" Canvas.Top="5" Cursor="Hand"

            MouseLeftButtonDown="TopText_MouseLeftButtonDown"/>

</Canvas>

<Canvas Width="220" Height="39" Canvas.Left="-325" x:Name="BottomOverlay" Canvas.Top="131">

     <Rectangle Opacity="0.4" x:Name="BottomRect" Width="220" Height="39" Fill="#FF808080" Stroke="#FF000000"/>

     <TextBlock RenderTransformOrigin="0.496,0.176" x:Name="BottomText" Width="215" Height="27"

            FontSize="18" FontWeight="Bold" Foreground="#FFFFFFFF" Text="My First Overlay"

            TextWrapping="Wrap" Canvas.Left="5" Canvas.Top="6" Cursor="Hand"

            MouseLeftButtonDown="BottomText_MouseLeftButtonDown"/>

</Canvas>