storyboard in blend using xaml and behaviors

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XAML

Blend

storyboard

behaviors

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hi , i'm trying to add my storyboard in XAML to an event.
I'm working with Blend.
I do this for click event on a control but I want that when my page loaded , my whole page do a beautiful sliding using easing effect!
now I build my storyboard , but when I bind that too my page loaded event or unloaded it doesn't work!

My question is : which behavior and which event should I use for my storyboard to work when navigated to that page from other pages, or when page loaded

and also I need a reference for behaviors in XAML!

tnx a million for your time and patient!