Silverlight 3 调用javascript 函数

Silverlight 3 调用javascript 函数简单例子：
c# code:
using System.Windows.Browser;
 private void logout_but_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            HtmlPage.Window.Invoke("logout","Invoke");//logout是javascript 函数名
        }
//----------------------------------------
xaml code:
 <Image Source="pic/close.png" Cursor="Hand"  x:Name="logout_but"  ToolTipService.ToolTip="安全退出" Width="20" Height="21" HorizontalAlignment="Right" MouseLeftButtonUp="logout_but_MouseLeftButtonUp"></Image>
//----------------------------------------
aspx  code:
 <script language="javascript">
function logout(){
if(confirm('确定退出系统？')){... } else{false;}
}
</script>
//------------------------------------------
更多内容：http://msdn.microsoft.com/en-us/library/cc221359(VS.95).aspx