cookir exprise

@@ -214,5 +214,7 @@ $('#yoho-footer').css({
 
 
 //set cookie
 //set cookie
 exports.set = function(c) {
 exports.set = function(c) {
-    window.setCookie('_Channel', c);
+    window.setCookie('_Channel', c, {
+        expires: 365
+    });
 };
 };