My apologies on the delayed response to upload the PanelAnimator utility class for WPF. Just got it from William Lim, the Lead Architect in Entellium Technologies.

Essentially the PanelAnimator does the following:

• Animates stack panel when your WPF app is resized
• Allows you to modify the source code to customize specialized behavior
• Use customized behavior by associating it as an attribute in your XAML control element

Enjoy!