Cookie

                 function setCookie(name, value, expireDate) {
			var exp = new Date();
			exp.setTime(exp.getTime() + expireDate * 24 * 60 * 60 * 1000);
			document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString() + ";path=/;domain=.xxx.com";
		}



		function getCookie(name) {
			var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
			if (arr = document.cookie.match(reg))
				return unescape(arr[2]);
			else
				return null;
		}




		function getCookieUrl(name) {
			var cookie_start = document.cookie.indexOf(name);
			var cookie_end = document.cookie.indexOf(";", cookie_start);
			return cookie_start == -1 ? '' : document.cookie.substring(cookie_start + name.length + 1, (cookie_end >
				cookie_start ? cookie_end : document.cookie.length));
		}