Flash CS3 Tutorial
How to Apply Blur Effect to Flash Object
There are multiple ways to display a blurred object in Flash. You could blur the object in Photoshop and import the image.
A second method uses the Blur Filter, for more information, see topic Blur Filter. For this topic we'll use a Timeline Effect called Blur. It produces an animated blur.
Add a rectangular object to the workspace with the Rectangle tool (r key).
With the rectangle selected, choose Insert > Timeline Effects > Effects > Blur.
In the dialog box you can set the Effect Duration, Resolution and Scale.
Click the Update Preview button to see the changes before accepting the blur animation.
Once you are satisfied, click OK. A new effect animation is added to the workspace.