JS Cookie

var Cookies = {
	set : function(name, value) {
		var argv = arguments;
		var argc = arguments.length;
		var expires = (argc > 2) ? argv[2] : null;
		var path = (argc > 3) ? argv[3] : '/';
		var domain = (argc > 4) ? argv[4] : null;
		var secure = (argc > 5) ? argv[5] : false;
		document.cookie = name
				+ "="
				+ escape(value)
				+ ((expires == null) ? "" : ("; expires=" + expires
						.toGMTString()))
				+ ((path == null) ? "" : ("; path=" + path))
				+ ((domain == null) ? "" : ("; domain=" + domain))
				+ ((secure == true) ? "; secure" : "");
	},
	get : function(name) {
		var arg = name + "=";
		var alen = arg.length;
		var clen = document.cookie.length;
		var i = 0;
		var j = 0;
		while (i < clen) {
			j = i + alen;
			if (document.cookie.substring(i, j) == arg)
				return Cookies.getCookieVal(j);
			i = document.cookie.indexOf(" ", i) + 1;
			if (i == 0)
				break;
		}
		return null;
	},
	clear : function(name) {
		if (Cookies.get(name)) {
			document.cookie = name + "="
					+ "; expires=Thu, 01-Jan-70 00:00:01 GMT";
		}
	}
};