How to do masking effect like this

1

http://www.easternmandaps.co.uk/index.htm

how do you this same masking effect?
i assume its action script,
ive seen this exact same masking effect on other sites.

somebody must have a tutorial

2

Hello Friend,

In that effect… Small part have only Masking… Rest all effect have animation… Can you try on animation part…

Regards,
vamsi.g