Now you can easily animate gradient image using Flash. For this you need to open flash, and then import an image which you want to work with. Create a new layer. Draw a rectangular. Go to color option and choose liner. You have to keep alpha in one side of gradient. Ad few key frames and use motion tween. Now go to your picture. You also make the same key frames of that. So it will be regular. After watching this tutorial you will be able to make nice gradient animation using Flash.