Check this site I c some bubals are going on how it’s possible or u can say how can I create this type of effect (snofol type effect)…. http://www.yahoofanclub.com/index.php
Here you have a javascript file http://www.yahoofanclub.com/snow.js and here what to add to HTML <script src="/snow.js" type="text/javascript"></script> Code (markup): But there are many these scripts, no matter how cool they are, they are annoying for most of users, good maybe for christmas day but not for entire winter.