修复移动端已注册的提示

views/mobile_site/regist.html

                 aespass: aespass,
             }
             $("#codebtn").attr("disabled", true);
-            changeNum(60);
 
             postRequest("/getregistcode", postData, function(res) {
                 if (res.state == 0) {
-                    serverErrorMsg(res);
+                    if (res.code == 604) {
+                        $('.layer').show();
+                    } else {
+                        serverErrorMsg(res);
+                    }
                     return;
                 }
+                changeNum(60);
                 layer.msg(res.data.msg);
+                $("#codebtn").attr("disabled", false);
 
             }, function(res) {
                 serverErrorMsg(res);
+                $("#codebtn").attr("disabled", false);
             });
         });