Animations Silverlight

    xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' 
    xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
    xmlns:d='http://schemas.microsoft.com/expression/blend/2008' 
    xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' 
    mc:Ignorable='d' 
    d:DesignWidth='640' 
    d:DesignHeight='480'>

    
         
            
                 
                                                    Duration="Forever">
                                                      Storyboard.TargetName="pulse"
                             Storyboard.TargetProperty="RadiusX"
                             From="0" To="1"
                             Duration="0:0:2"
                             AutoReverse="True" />
                                                      Storyboard.TargetName="pulse"
                             Storyboard.TargetProperty="RadiusY"
                             From="0" To="1"
                             Duration="0:0:2"
                             AutoReverse="True" />
                     
                

             

         
    

     
        
                                               RadiusX="0.0"
                                  RadiusY="0.0"
                                 GradientOrigin="0.5,0.5">
                 
                                                Offset="0.5"/>
                                               Offset="1"/>