var minSize=20;
var maxSize=50;
var snow=$("

").css({ "position":"absolute", "top":"-50px" }).html("❉"); $(function(){ var $windoWidth=$(window).width(); var $windowHeight=$(window).height(); setInterval(function(){ var startWidth=Math.random()*$windoWidth; var endwidth=Math.random()*$windoWidth; var time=3000+Math.random()*$windowHeight; var startOpacity=0.7+0.3*Math.random(); var endOpacity=0.3+0.1*Math.random(); var size=minSize+Math.random()*(maxSize-minSize); snow.clone().appendTo($("body")).css({ "left":startWidth, "color":"#fff", "opacity":startOpacity, "font-size":size, }).animate({ "top":$windowHeight-30, "left":endwidth, "opacity":endOpacity },time,function(){ $(this).remove(); }) },30) });