diff --git a/RwTicketAssistantV2/app/background.js b/RwTicketAssistantV2/app/background.js
index d5664dd..e273a15 100644
--- a/RwTicketAssistantV2/app/background.js
+++ b/RwTicketAssistantV2/app/background.js
@@ -489,9 +489,14 @@ var CFG_MANGER = (function () {
 		if (newCookies) {
 			var oc = parseCookies(oldCookiesValue);
 			newCookies = _.extend({}, oc, newCookies);
-			newHeaders["Cookie"] = _.map(newCookies, function (v, k) {
+			newHeaders["Cookie"] = _.filter(_.map(newCookies, function (v, k) {
+				if (!v)
+					return "";
 				return k + "=" + encodeURIComponent((v));
-			}).join("; ");
+			}), function (v) { return v || false; }).join("; ");
+			if (!newHeaders["Cookie"]) {
+				delete newHeaders["Cookie"];
+			}
 		}
 
 		var headerCollection = [];
@@ -1294,7 +1299,7 @@ window.cbl = function (u, h) {
 		if (idx > -1) {
 			ports.splice(idx, 1);
 		}
-		if (!checkPortTimer)
+		if (!checkPortTimer && ports.length === 0)
 			checkPortTimer = setTimeout(clearPortTimer, 30 * 60 * 1000);
 	};
 	var postMessageToPort = function (msg) {
diff --git a/Web12306/js/ui/ui-submit-order.js b/Web12306/js/ui/ui-submit-order.js
index b3ab47f..21b24d7 100644
--- a/Web12306/js/ui/ui-submit-order.js
+++ b/Web12306/js/ui/ui-submit-order.js
@@ -137,7 +137,7 @@
 					dom.find("div>p:eq(0) span").html(data.msg);
 					resubmitBtn[0].disabled = false;
 				} else {
-					$("#ticket-submit-info .ticket-submit-vc span").click();
+					$("p.ticket-submit-vc input").val("")[0].focus();
 				}
 
 				//track