Animated layout-to-layout switching in Silverlight

Question

Hi, I want the same thing as http://stackoverflow.com/questions/132251/wpf-animation-of-items-between-layouts but for Silverlight.

Is there any third party libs that are capable of doing this?

Also I would like to do something more than just switching between WrapPanel and StackPanel, but have some more complex layout combinations (e.g. Grid+Gird+StackPanel and Grid+WrapPanel+StackPanel). blendables.com libs are really great but they have nothing for Silverlight.

Please could you advice something except writing my own and/or reading Dr.WPF's article "Conceptual Children" (really good article) Thanks a lot. Cheers.