function SetCookie(name, value) {            var Days = 1;//保留天数            var exp = new Date();            exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000);            document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString() + ";path=/;";        }        function GetCookie(name) {            var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));            if (arr != null) return unescape(arr[2]); return null;        }        function DelCookie(name) {            var exp = new Date();            exp.setTime(exp.getTime() - 1);            var cval = GetCookie(name);            if (cval != null) document.cookie = name + "=" + escape(cval) + ";expires=" + exp.toGMTString() + ";path=/;";        }