Flex 4 -- Adding blur below pane

I'm looking to create a component like an Alert but with a bunch of components inside the pan开发者_运维技巧e. How can I create the blur effect below a pane?

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Have a look at the AS docs here, there's a good example that will do what you want. Any DisplayObject can have filters applied to it

Alternatively, you can use something like TweenMax's dropShadowFilter to do it quickly and easily