diff --git a/controllers/BaseController.go b/controllers/BaseController.go
index f8dbc786..85a11f13 100644
--- a/controllers/BaseController.go
+++ b/controllers/BaseController.go
@@ -161,7 +161,6 @@ func (c *BaseController) ShowErrorPage(errCode int, errMsg string) {
 	if errCode >= 200 && errCode <= 510 {
 		c.CustomAbort(errCode, buf.String())
 	}else{
-		c.CustomAbort(200, buf.String())
+		c.CustomAbort(500, buf.String())
 	}
-
 }
diff --git a/controllers/DocumentController.go b/controllers/DocumentController.go
index 56d47374..ff92f06b 100644
--- a/controllers/DocumentController.go
+++ b/controllers/DocumentController.go
@@ -120,7 +120,7 @@ func (c *DocumentController) Read() {
 		doc, err = doc.FromCacheById(docId)
 		if err != nil {
 			beego.Error("从缓存中读取文档时失败 ->", err)
-			c.ShowErrorPage(500, "文档不存在或已删除")
+			c.ShowErrorPage(404, "文档不存在或已删除")
 		}
 	} else {
 		doc, err = doc.FromCacheByIdentify(id, bookResult.BookId)
diff --git a/static/js/markdown.js b/static/js/markdown.js
index 6d9983f5..9ad1a8d0 100644
--- a/static/js/markdown.js
+++ b/static/js/markdown.js
@@ -202,10 +202,8 @@ $(function () {
             timeout : 30000,
             dataType: "json",
             success: function (res) {
-                layer.close(index);
                 if (res.errcode === 0) {
                     resetEditorChanged(false);
-                    window.saveing = false;
                     for (var i in window.documentCategory) {
                         var item = window.documentCategory[i];
 
@@ -230,8 +228,10 @@ $(function () {
                 }
             },
             error : function (XMLHttpRequest, textStatus, errorThrown) {
-                layer.close(index);
                 layer.msg("服务器错误：" +  errorThrown);
+            },
+            complete :function () {
+                layer.close(index);
                 window.saveing = false;
             }
         });
diff --git a/static/js/quill.js b/static/js/quill.js
index 039c0196..fdd3cf8e 100644
--- a/static/js/quill.js
+++ b/static/js/quill.js
@@ -138,7 +138,7 @@ $(function () {
 
                 pushVueLists(res.data.attach);
                 initHighlighting();
-
+                setLastSelectNode($node);
             }else{
                 layer.msg("文档加载失败");
             }
@@ -182,13 +182,13 @@ $(function () {
         $.ajax({
             beforeSend  : function () {
                 index = layer.load(1, {shade: [0.1,'#fff'] });
+                window.saveing = true;
             },
             url :  window.editURL,
             data : {"identify" : window.book.identify,"doc_id" : doc_id,"markdown" : content,"html" : html,"cover" : $is_cover ? "yes":"no","version": version},
             type :"post",
             dataType :"json",
             success : function (res) {
-                layer.close(index);
                 if(res.errcode === 0){
                     for(var i in window.documentCategory){
                         var item = window.documentCategory[i];
@@ -214,6 +214,13 @@ $(function () {
                 }else{
                     layer.msg(res.message);
                 }
+            },
+            error : function (XMLHttpRequest, textStatus, errorThrown) {
+                layer.msg("服务器错误：" +  errorThrown);
+            },
+            complete :function () {
+                layer.close(index);
+                window.saveing = false;
             }
         });
     }
@@ -317,17 +324,8 @@ $(function () {
         }
     }).on('loaded.jstree', function () {
         window.treeCatalog = $(this).jstree();
-        var $select_node_id = window.treeCatalog.get_selected();
-        if ($select_node_id) {
-            var $select_node = window.treeCatalog.get_node($select_node_id[0])
-            if ($select_node) {
-                $select_node.node = {
-                    id: $select_node.id
-                };
-
-                loadDocument($select_node);
-            }
-        }
+        //如果没有选中节点则选中默认节点
+        openLastSelectedNode();
 
     }).on('select_node.jstree', function (node, selected, event) {
         if(window.menu_save.hasClass('change')) {
diff --git a/uploads/20170501203542.png b/uploads/20170501203542.png
index d1f3e78e..b44b3e87 100644
Binary files a/uploads/20170501203542.png and b/uploads/20170501203542.png differ
diff --git a/uploads/20170501203656.png b/uploads/20170501203656.png
index fc22e19a..0828f04b 100644
Binary files a/uploads/20170501203656.png and b/uploads/20170501203656.png differ
diff --git a/uploads/20170501204438.png b/uploads/20170501204438.png
index d00d8691..22310ef2 100644
Binary files a/uploads/20170501204438.png and b/uploads/20170501204438.png differ
diff --git a/uploads/20170501204609.png b/uploads/20170501204609.png
index 3b20e6fa..4942f2b1 100644
Binary files a/uploads/20170501204609.png and b/uploads/20170501204609.png differ
diff --git a/uploads/20170501204651.png b/uploads/20170501204651.png
index 06a753f7..f94571f2 100644
Binary files a/uploads/20170501204651.png and b/uploads/20170501204651.png differ
diff --git a/views/errors/error.tpl b/views/errors/error.tpl
index 6819cb0d..448a1895 100644
--- a/views/errors/error.tpl
+++ b/views/errors/error.tpl
@@ -7,7 +7,7 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
     <meta name="renderer" content="webkit" />
     <meta name="viewport" content="width=device-width, initial-scale=1">
-    <title>服务器异常 - Powered by MinDoc</title>
+    <title> {{if eq 200 .ErrorCode}}友情提示{{else if eq 404 .ErrorCode}}页面不存在{{else}}服务器异0常{{end}} - Powered by MinDoc</title>
     <link href="{{cdncss "/static/fonts/lato-100.css"}}" rel="stylesheet" type="text/css">
     <style type="text/css">
         html, body {