js 设置cookie和获取cookie

设置cookie

				function setCookie(c_name, value, expiredays) {
					var exdate = new Date();
					exdate.setTime(Number(exdate) + expiredays);
					document.cookie = c_name + "=" + escape(value) + ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString());
				}				function setCookie(c_name, va