NICE Cookie Usage - shows a banner at the top of the page (once) if based in the EU.

cookieLaw.js

(function ($) {
	function setCookie(a, b, c) {
		var d = new Date();
		d.setDate(d.getDate() + c);
		var e = escape(b) + ((c == null) ? "" : "; expires=" + d.toUTCString());
		document.cookie = a + "=" + e;
	}

	function getCookie(a) {
		var i, x, y, cookieArray = document.cookie.split(";");
		for (i = 0; i < cookieArray.length; i++) {
			x = cookieArray[i].substr(0, cookieArray[i].indexOf("="));
			y = cookieArray[i].substr(cookieArray[i].indexOf("=") + 1);
			x = x.replace(/^\s+|\s+$/g, "");
			if (x == a) {
				return unescape(y);
			}
		}
	}

	function performCheck() {
		if (getCookie("shownMessage")){
			return;
		};
		var timeZone = -new Date().getTimezoneOffset() / 60;
		var loc = "";
		switch (timeZone) {
			case -1:
			case -0:
			case 0:
			case 1:
			case 2:
			case 3:
			case 3.5:
			case 4:
			case 4.5:
				loc = "Europe";
				break;
			case 9:
				loc = "Japan"
		}
		if (loc !== "Europe") {
			return;
		}
		var bannerHtml = "<div class=\"niceCookieLaw\"><div class=\"niceCookieContainer\">" 
			+ "<p>This website uses cookies. By continuing to browse the site you are agreeing to our use of cookies.</p>" 
			+ "<a class=\"niceCookiesMore\" href=\"#\">Find out more</a>";
		$("body").prepend(bannerHtml);
		$(".niceCookieLaw").show();
	}
	performCheck();
	setCookie("shownMessage", true, 365);
})(jQuery);