fix nav active have not switched after filter sub menu click

@@ -78,6 +78,10 @@ function search(opt) {
             }
             }
         }
         }
 
 
+        //处理active状态
+        $listNav.children('.active').removeClass('active');
+        $pre.addClass('active');
+
         switch (opt.type) {
         switch (opt.type) {
             case 'gender':
             case 'gender':
                 ext = {
                 ext = {