xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
WindowTitle="Expanding Circles">
HorizontalAlignment="Center" VerticalAlignment="Center" >
Storyboard.TargetProperty="StrokeThickness"
From="0" Duration="0:0:5" />
Storyboard.TargetProperty="RadiusX"
From="0" To="25" IsAdditive="True"
Duration="0:0:5" />
Storyboard.TargetProperty="RadiusY"
From="0" To="25" IsAdditive="True"
Duration="0:0:5" />
Storyboard.TargetProperty="RadiusX"
From="0" To="25" IsAdditive="True"
Duration="0:0:5" />
Storyboard.TargetProperty="RadiusY"
From="0" To="25" IsAdditive="True"
Duration="0:0:5" />