Snowstorm: A Javascript Snow Effect for HTML

I downloaded the java applet for this, I just want the snow, and I’m wondering where I should put this for my blog I don’t want the wind either, just want it to fall straight, but slightly to an angle any help, I’m trying everything in the
“Edit Themes” section, I tryed it in
Main Index Template (index.php) and haha i reloaded hte site, and all my posts were gone, so I guess that didn’t work, but I thru it in in front of
<?php get_header(); ?>
so, i changed that back and my posts are back any help would be great.

https://www.schillmania.com/projects/snowstorm/

Thanks

Dave