// jSnow, a jQuery Plugin v1.1
// Licensed under GPL licenses.
// Copyright (C) 2009 Nikos "DuMmWiaM" Kontis, dummwiam@gmail.com
// http://www.DuMmWiaM.com/jSnow
(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: "fixed",
			top: $("html").scrollTop() + 1 + "px",
			left: "1px"
		});
		if ($.browser.msie && (parseFloat($.browser.version) < 7)) {
			u.css({position:'absolute'});
		}
		$("body").prepend(u);
		if ($.browser.msie && (parseFloat($.browser.version) < 7)) {
			u.css({
				'width' : $(document).width()+'px',
				'height' : $(window).height()+'px',
				'overflow' : 'hidden'
			});
			$('body').height($('table:first').height()).css('overflow-y','hidden');
		}
		$("html").css({
			"overflow-y": "scroll",
			"overflow-x": "hidden"
		});
		var v = Array();
		generateFlake(l, false);
		setInterval(animateFlakes, s);
		window.onresize = setWaH;
		function setWaH() {
			k = $('body').width();
			WIN_HEIGHT = window.innerHeight || document.documentElement.clientHeight
		};
		if ($.browser.msie && (parseFloat($.browser.version) < 7)) {
			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: 40,
		fallingSpeedMin: 1,
		fallingSpeedMax: 3,
		flakeMaxSize: 20,
		flakeMinSize: 10,
		flakeCode: ["&bull;","*"],
		flakeColor: ["#fff"],
		zIndex: 10000,
		interval: 60
	}
})(jQuery);