(function($){

  $.fn.jSnow=function(h){
    var j=$.extend({},$.fn.jSnow.defaults,h);
    var k,WIN_HEIGHT;setWaH();
    var l=j.flakes;
    var m=j.flakeCode;
    var n=j.flakeColor;
    var o=j.flakeMinSize;
    var p=j.flakeMaxSize;
    var q=j.fallingSpeedMin;
    var r=j.fallingSpeedMax;
    var s=j.interval;
    var t=j.zIndex;
    
    if( $.browser.msie&& (parseFloat($.browser.version) <8 ) && t=="auto"){
      t=0
    }
    
    var u=$("<div \/>");
    u.css({width:k+"px",height:1,display:"block",overflow:"visible",position:"absolute",top:$("html").scrollTop()+1+"px",left:"1px"});
    $("body").prepend(u).css({"overflow":"hidden",height:"100%"});
    $("html").css({"overflow-y":"scroll","overflow-x":"hidden"});
    var v=Array();
    
    generateFlake(l,false);
    setInterval(animateFlakes,s);
    window.onresize=setWaH;
    
    function setWaH(){
      k=$('body').width();
      WIN_HEIGHT=window.innerHeight||document.documentElement.clientHeight};
      
      window.onscroll=function(){
        u.css({top:$("html").scrollTop()+"px"})
      };
      
      function generateFlake(a,b){
        a=a||1;b=b||false;
        var i=0;
        
        for(i=0;i<a;i++){
          var c=$("<span \/>");
          var d=o+Math.floor(Math.random()*p);
          var e=m[Math.floor(Math.random()*m.length)];
          
          if(e.indexOf(".gif")!=-1||e.indexOf(".png")!=-1){
            var f=new Image();
            f.src=e;
            e="<img src='"+e+"' alt='jSnowFlake'>"
          }
          
          c.html(e).css({color:n[Math.floor(Math.random()*n.length)],fontSize:d+"px",display:"block",position:"absolute",cursor:"default","z-index":t});
          $(u).append(c);
          f_left=Math.floor(Math.random()*(k-c.width()-50))+25;
          f_top=(b)?-1*c.height():Math.floor(Math.random()*(WIN_HEIGHT-50));
          var g=Math.floor(Math.random()*200);
          jQuery.data(c,"posData",{top:f_top,left:f_left,rad:Math.random()*50,i:Math.ceil(q+Math.random()*(r-q)),swingRange:g});
          c.css({top:f_top+"px",left:f_left+"px"});
          v.push(c)
        }
      };
       
      function animateFlakes(){
        var i=0;
        for(i=v.length-1;i>=0;i--){
          var f=v[i];
          var a=jQuery.data(f,"posData");
          a.top+=a.i;
          var b=Number();
          b=Math.cos((a.rad/180)*Math.PI);
          a.rad+=2;
          var X=a.left-b*a.swingRange;f.css({top:a.top+"px",left:X+"px"});
          if (a.top>WIN_HEIGHT){
            jQuery.removeData(f);
            f.remove();
            v.splice(i,1);
            generateFlake(1,true)
          }
        }
      };
      
      return this
    };
    
    
    
    
    $.fn.jSnow.defaults={
      flakes:30,
      fallingSpeedMin:1,
      fallingSpeedMax:3,
      flakeMaxSize:20,
      flakeMinSize:10,
      flakeCode:["&bull;"],
      flakeColor:["#fff"],
      zIndex:"auto",
      interval:50
    }
  })(jQuery);