I ‘ve made some particle effect for Christmas, now you are seeing it at the background (it ‘s snowing) if you use modern browser that supports HTML5 Canvas element. If you don’t use, you might want to have one because it seems nice 
I just added but i thought someone might want to use this and then i decided to share here. It isn’t so flexible but the code is not messy, so you can easily edit yourself, if you want help, feel free to ask me by leaving a comment below.
Briefly, in order to add your page, first download the newyear.js , and then include into your HTML page as below:
<script src=”newyear.js”></script>
It will add the effect into background and set CSS property position to fixed.
The test page here;
Merry Christmas !