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document.body.innerHTML+='<style>.msgcookie{display:block;position:fixed;bottom:0;height:50px;width:100%;background:rgba(0,0,0,0.8);color:#fff;font-size:11px;font-family:sans-serif}.msgcookie p{width:960px;margin:0 auto;background:url(cookie.png) 0 0 no-repeat;padding:10px 0 0 30px}.msgcookie p a:link,.msgcookie p a:active,.msgcookie p a:visited,.msgcookie p a:hover{color:#fff}.msgcookie a.close{float:right;display:block;width:16px;height:50px;background:url(cookie.png) 0 -45px no-repeat;overflow:hidden;text-indent:-80px;opacity:0.5;margin:0 0 0 40px}a.close:hover{opacity:1}</style>';



/*!
 * jQuery Cookie Plugin v1.4.0
 * https://github.com/carhartl/jquery-cookie
 *
 * Copyright 2013 Klaus Hartl
 * Released under the MIT license
 */
(function (factory) {
	if (typeof define === 'function' && define.amd) {
		// AMD. Register as anonymous module.
		define(['jquery'], factory);
	} else {
		// Browser globals.
		factory(jQuery);
	}
}(function ($) {

	var pluses = /\+/g;

	function encode(s) {
		return config.raw ? s : encodeURIComponent(s);
	}

	function decode(s) {
		return config.raw ? s : decodeURIComponent(s);
	}

	function stringifyCookieValue(value) {
		return encode(config.json ? JSON.stringify(value) : String(value));
	}

	function parseCookieValue(s) {
		if (s.indexOf('"') === 0) {
			// This is a quoted cookie as according to RFC2068, unescape...
			s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
		}

		try {
			// Replace server-side written pluses with spaces.
			// If we can't decode the cookie, ignore it, it's unusable.
			// If we can't parse the cookie, ignore it, it's unusable.
			s = decodeURIComponent(s.replace(pluses, ' '));
			return config.json ? JSON.parse(s) : s;
		} catch(e) {}
	}

	function read(s, converter) {
		var value = config.raw ? s : parseCookieValue(s);
		return $.isFunction(converter) ? converter(value) : value;
	}

	var config = $.cookie = function (key, value, options) {

		// Write
		if (value !== undefined && !$.isFunction(value)) {
			options = $.extend({}, config.defaults, options);

			if (typeof options.expires === 'number') {
				var days = options.expires, t = options.expires = new Date();
				t.setDate(t.getDate() + days);
			}

			return (document.cookie = [
				encode(key), '=', stringifyCookieValue(value),
				options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
				options.path    ? '; path=' + options.path : '',
				options.domain  ? '; domain=' + options.domain : '',
				options.secure  ? '; secure' : ''
			].join(''));
		}

		// Read

		var result = key ? undefined : {};

		// To prevent the for loop in the first place assign an empty array
		// in case there are no cookies at all. Also prevents odd result when
		// calling $.cookie().
		var cookies = document.cookie ? document.cookie.split('; ') : [];

		for (var i = 0, l = cookies.length; i < l; i++) {
			var parts = cookies[i].split('=');
			var name = decode(parts.shift());
			var cookie = parts.join('=');

			if (key && key === name) {
				// If second argument (value) is a function it's a converter...
				result = read(cookie, value);
				break;
			}

			// Prevent storing a cookie that we couldn't decode.
			if (!key && (cookie = read(cookie)) !== undefined) {
				result[name] = cookie;
			}
		}

		return result;
	};

	config.defaults = {};

	$.removeCookie = function (key, options) {
		if ($.cookie(key) === undefined) {
			return false;
		}

		// Must not alter options, thus extending a fresh object...
		$.cookie(key, '', $.extend({}, options, { expires: -1 }));
		return !$.cookie(key);
	};

}));




$(document).ready(function() 
{
	if (!$.cookie("msgcookie"))
	{
		$("body").prepend("<div class='msgcookie'><p><a href='#' class='close'>cerrar mensaje</a>Esta web utiliza 'cookies' propias y de terceros para ofrecerle una mejor experiencia y servicio y poder registrar el proceso de compra. Al navegar o utilizar nuestros servicios el usuario acepta el uso que hacemos de las 'cookies'. <a href='#'>M&aacute;s informaci&oacute;n</a></p></div>");
		
		$("body").on("click", ".close", function(e) {
			e.preventDefault();
			$.cookie('msgcookie', 'aceptado');
			$(".msgcookie").fadeOut();
		});
		
		$("body").on("click", ".msgcookie p a:not(.close)", function(e) {
			e.preventDefault();
			alert("Este enlace debe ir a tu pol\u00EDtica de privacidad");
		});
	}
});

<!DOCTYPE html>
<html>
<head>
<meta name="description" content="JQUERY COOKIE EXAMPLE" />
<script src="http://code.jquery.com/jquery-git1.js"></script>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>
  
</body>
</html>