Como poner nieve dentro de tu web

Con este maravilloso efecto podrás hacer que caiga nieve al mover el cursor, muy útil para darle color y un poco de alegría a tu web

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var colour="#f0f";

var sparkles=50;

/****************************

* Tinkerbell Magic Sparkle *

* http://www.mf2fm.com/rv *

* NO EDITAR TEXTO MAS ABAJO *

****************************/

var x=ox=400;

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set_width();

sparkle();

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set_scroll();

y=(e)?e.pageY:event.y+sdown;

x=(e)?e.pageX:event.x+sleft;

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sdown=document.documentElement.scrollTop;

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div.style.width=width+"px";

div.style.overflow="hidden";

div.style.backgroundColor=colour;

return (div);

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