Blinking movieclips

Hi
I have seen this website and was wondering how the movie clips flash when it is loaded on the the screen.

has anyone got an example to look at please
cheers

the link is
http://www.arcticcat.com/snowmobiles/lineups/2003/firecat/index.asp

make a white square > hit F8 > make MC symbol

place MC on the stage in frame one > set alpha to 0%

place the same MC on frame 5 > set alpha to 100%

place the same MC on frame 10 > set alpha to 60%

now tween them all > select frames > right click on frames > make tween

if you test > Ctrl+Enter > the mc will light up very fast and then soften down to 60% alpha

Hope this is what you meant. keep in mind you need a framerate of approx. 31 for good effects.

good luck…

many thanks for your help