Применение элементов RIA в Интернет-магазине

<object type="video/x-ms-wmv" width="200" height="200">
	<param name="filename" value ="1.wmv" />
</object>

<div id="silverlightvideocontainer">
   <object data="data:application/x-silverlight-2" type="application/x-silverlight-2" width="640" height="352">
      <param name="source" value="silverlightvideos/BlackGlassTemplate.xap"/>
      <param name="background" value="white" />
      <param name="minRuntimeVersion" value="3.0.40624.0" />
      <param name="autoUpgrade" value="true" />
      <param name="enableHtmlAccess" value="true" />
      <param name="enableGPUAcceleration" value="true" />
      <param name="initparams" value='playerSettings = 
         <Playlist>
            <AutoLoad>false</AutoLoad>
              <AutoPlay>false</AutoPlay>
              <DisplayTimeCode>false</DisplayTimeCode>
              <EnableCachedComposition>true</EnableCachedComposition>
              <EnableCaptions>true</EnableCaptions>
              <EnableOffline>true</EnableOffline>
              <EnablePopOut>true</EnablePopOut>
              <StartMuted>false</StartMuted>
              <StretchMode>None</StretchMode>
              <Items>
                 <PlaylistItem>
                    <AudioCodec>WmaProfessional</AudioCodec>
                    <Description></Description>
                    <FileSize>158516095</FileSize>
                    <FrameRate>23.9759856527702</FrameRate>
                    <Height>352</Height>
                    <IsAdaptiveStreaming>false</IsAdaptiveStreaming>
                    <MediaSource>silverlightvideos/2.wmv</MediaSource>
                    <ThumbSource></ThumbSource>
                    <Title></Title>
                    <VideoCodec>VC1</VideoCodec>
                    <Width>640</Width>
                 </PlaylistItem>
              </Items>
           </Playlist>'/>
      <a href="http://go2.microsoft.com/fwlink/?LinkID=124807" 
         style="text-decoration: none;">
         <img src="http://go2.microsoft.com/fwlink/?LinkId=108181" 
	     alt="Get Microsoft Silverlight" style="border-style: none;"/>
      </a>
   </object>
   <iframe id="_sl_historyFrame" style='visibility:hidden;height:0;width:0;border:0px;'>
   </iframe>
</div>

<UserControl x:Class="SilverlightPleer.MainPage"
    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" 
    Width="300" Height="200"
    mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">
  <Grid x:Name="LayoutRoot" Margin="0,0,0,84">
  	<Grid.RowDefinitions>
  		<RowDefinition Height="0.715*"/>
  		<RowDefinition Height="0.285*"/>
  	</Grid.RowDefinitions>
        <MediaElement x:Name="myMedia" Source="2.wmv" Width="300" 
               Margin="-2,0,2,-49" d:LayoutOverrides="VerticalAlignment" 
               Grid.RowSpan="2" AutoPlay="False"/>
        <Button Width="94" Height="30" Content="Проиграть" Click="Button_Click"  
               Margin="-1,0,0,-83" VerticalAlignment="Bottom" 
               d:LayoutOverrides="VerticalAlignment, Height" RenderTransformOrigin="0.613,1.067" 
               Grid.Row="1" HorizontalAlignment="Left"/>
        <Button Width="92" Height="30" Content="Остановить" Click="Button_Click_1"  
               HorizontalAlignment="Right" Margin="0,0,0,-83" VerticalAlignment="Bottom" 
               RenderTransformOrigin="0.613,1.067" Grid.Row="1" 
               d:LayoutOverrides="VerticalAlignment, Height"/>
        <Button Height="30" Content="Пауза" Click="Button_Click_2" 
               Margin="105,0,103,-82" VerticalAlignment="Bottom" 
               RenderTransformOrigin="0.613,1.067" Grid.Row="1" 
               d:LayoutOverrides="VerticalAlignment, Height"/>
    </Grid>
</UserControl>

void MainPage_Loaded(object sender, RoutedEventArgs e)
{
    HtmlPage.RegisterScriptableObject("basic", this);
}

private void Button_Click(object sender, RoutedEventArgs e)
{
    changeMediaSource();
}

[ScriptableMember]
public void changeMediaSource()
{
    myMedia.Stop();
    myMedia.Source = new Uri("3.wmv", UriKind.Relative);
    myMedia.Play();
    isStoped = false;
}

private void Button_Click_1(object sender, RoutedEventArgs e)
{
    myMedia.Stop();
    isStoped = true;
}

private void Button_Click_2(object sender, RoutedEventArgs e)
{
    if (!isStoped)
    {
        myMedia.Pause();
        isStoped = true;
    }
    else
    {
        myMedia.Play();
        isStoped = false;
    }
}

<div id="silverlightControlHost" style='height:300px; width=200px;'>
   <object data="data:application/x-silverlight-2," type="application/x-silverlight-2" 
           width="100%" height="100%" id="silverlightControl">
      <param name="source" value="../ClientBin/SilverlightPleer.xap"/>
      <param name="onError" value="onSilverlightError" />
      <param name="background" value="white" />
      <param name="minRuntimeVersion" value="3.0.40818.0" />
      <param name="autoUpgrade" value="true" />
      <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40818.0" 
        style="text-decoration:none">
         <img src="http://go.microsoft.com/fwlink/?LinkId=108181" 
	      alt="Get Microsoft Silverlight" style="border-style:none"/>
      </a>
   </object>
   <iframe id="_sl_historyFrame" 
         style="visibility:hidden;height:0px;width:0px;border:0px">
   </iframe>
</div>

<asp:Button ID="ButtonPlayJavaScript" runat="server" 
             Text="Изменить видео" OnClientClick="changeMedia();" />
    
<script language="javascript" type="text/javascript">
  function changeMedia() {
    var svlObject = document.getElementById("silverlightControl");
    svlObject.Content.basic.changeMediaSource();
  }
</script>