<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Style x:Key="ButtonTopMenu" TargetType="Button">
        <Setter Property="Background" Value="Transparent" />
        <Setter Property="FocusVisualStyle" Value="{x:Null}" />
        <Setter Property="SnapsToDevicePixels" Value="True" />
        <Setter Property="VerticalAlignment" Value="Center" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border Background="{TemplateBinding Background}"
                            x:Name="MainBorder">                        
                            <ContentPresenter />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsFocused" Value="True">
                            <Setter Property="Background" Value="{DynamicResource GlyphBrush}" TargetName="MainBorder" />
                            <Setter Property="Effect" TargetName="MainBorder">
                                <Setter.Value>
                                    <DropShadowEffect ShadowDepth="0"
                                                      Color="White"
                                                      Opacity="0.4"
                                                      RenderingBias="Quality"
                                                      BlurRadius="5"/>
                                </Setter.Value>
                            </Setter>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>