// jSnow, a jQuery Plugin v1.1.mod1  
// Licensed under GPL licenses.  
// Copyright (C) 2009 Nikos "DuMmWiaM" Kontis, dummwiam@gmail.com  
// http://www.DuMmWiaM.com/jSnow  
// Modified 2009~  
(function ($) {  
$.fn.jSnow = function (h) {  
 var j = $.extend({},  
 $.fn.jSnow.defaults, h);  
 var k, WIN_HEIGHT;  
 setWaH();  
 var l = j.flakes;  
 var m = j.flakeCode;  
 var n = j.flakeColor;  
 var o = j.flakeMinSize;  
 var p = j.flakeMaxSize;  
 var q = j.fallingSpeedMin;  
 var r = j.fallingSpeedMax;  
 var s = j.interval;  
 var t = j.zIndex;  
 var useGif = false;  
 if ($.browser.msie && (parseFloat($.browser.version) < 8))  
   useGif = true;  
 if ($.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",  
   zIndex: t  
 });  
 $("body").prepend(u).css({  
   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  
   WIN_HEIGHT -= 50;  
 };  
 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();  
       if (useGif)  
         e = e.replace("png", "gif");  
       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() * 90);  
     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);