Convert a WPF Swipe Transition Datatemplate with DataTriggers to Silverlight4 - wpf

Question

I've got the following datatemplate in a WPF app I'm working on. This provides an awesome swipe transition and was originally taken from this blog post.
What I'd like to do is get the same thing working in Silverlight 4. To my horror, SL4 is missing DataTriggers and certain storyboards. Can anyone shed light on the equivalents? Alternatively, can you point to a swipe transition on the web in Silverlight I can poach? Thanks!!
The Swipe Transition
<DataTemplate x:Key="SwipeTransition">
<DataTemplate.Resources>
<Visibility x:Key="Visible">Visible</Visibility>
<Storyboard x:Key="SlideStoryboard">
<DoubleAnimation
Storyboard.TargetName="container"
Storyboard.TargetProperty="RenderTransform.(TranslateTransform.X)"
From="0" FillBehavior="Stop"
Duration="0:0:0.3"
DecelerationRatio="1.0"/>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="a"
Storyboard.TargetProperty="Visibility"
Duration="0:0:0.3" FillBehavior="Stop">
<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource Visible}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="b"
Storyboard.TargetProperty="Visibility"
Duration="0:0:0.3" FillBehavior="Stop">
<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource Visible}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</DataTemplate.Resources>
<Grid ClipToBounds="True">
<Common:Transition x:Name="transition" Source="{Binding}" />
<Grid Name="container">
<Grid.RenderTransform>
<TranslateTransform X="{Binding ElementName=container, Path=ActualWidth, Converter={StaticResource NegativeConverter}}" />
</Grid.RenderTransform>
<ContentControl Name="a" Visibility="Hidden" Content="{Binding ElementName=transition, Path=DisplayA}" />
<ContentControl Name="b" Visibility="Hidden" Content="{Binding ElementName=transition, Path=DisplayB}" />
</Grid>
</Grid>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding ElementName=transition, Path=State}" Value="A">
<Setter TargetName="a" Property="Visibility" Value="Visible" />
<Setter TargetName="a" Property="RenderTransform">
<Setter.Value>
<TranslateTransform X="{Binding ElementName=container, Path=ActualWidth}" />
</Setter.Value>
</Setter>
<DataTrigger.EnterActions>
<BeginStoryboard Storyboard="{StaticResource SlideStoryboard}" />
</DataTrigger.EnterActions>
</DataTrigger>
<DataTrigger Binding="{Binding ElementName=transition, Path=State}" Value="B">
<Setter TargetName="b" Property="Visibility" Value="Visible" />
<Setter TargetName="b" Property="RenderTransform">
<Setter.Value>
<TranslateTransform X="{Binding ElementName=container, Path=ActualWidth}" />
</Setter.Value>
</Setter>
<DataTrigger.EnterActions>
<BeginStoryboard Storyboard="{StaticResource SlideStoryboard}" />
</DataTrigger.EnterActions>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
Which is applied as follows
<ContentControl x:Name="_exampleView" Content="{Binding SelectedExample.View}"
ContentTemplate="{StaticResource SwipeTransition}"/>

Answer 1

first a big thanks for the link.
May be you should look at this post How to create a WPF-like data trigger in Silverlight? they stated that VSM is the way to go for silverlight.