diff --git a/doc/assets/style.css b/doc/assets/style.css
index dbeb310..8879b65 100644
--- a/doc/assets/style.css
+++ b/doc/assets/style.css
@@ -117,8 +117,8 @@ div.search-icon {
     width: 35px;
 }
 div.doc-toc {
-    width: 300px;
-    /* font-size: 11px; */
+    max-width: 80%;
+    padding-right: 10px;
     background-color: #e3e3e3;
     color: #2c2c2c;
     overflow: auto;
@@ -127,7 +127,16 @@ div.doc-toc {
     bottom: 30px;
     border-right: 1px solid #c9c9c9;
     padding-top: 10px;
+    box-shadow: 2px 0px 7px #878887;
+    z-index: 20;
 }
+button#btn_toc {
+    width: 33px;
+    height: 33px;
+    position: fixed;
+    border: 1px solid #dadddd;
+}
+
 div.doc-toc a {
     text-decoration: none;
     color: #2c2c2c;
@@ -178,7 +187,7 @@ div.doc-toc a.highlight {
 
 div.doc-content {
     display: block;
-    width: calc(100% - 300px);
+    width: calc(100% - 30px);
     float: right;
     padding-left: 10px;
 }
diff --git a/doc/controllers/doccontroller.lua b/doc/controllers/doccontroller.lua
index 7783102..b9c6a5c 100644
--- a/doc/controllers/doccontroller.lua
+++ b/doc/controllers/doccontroller.lua
@@ -13,7 +13,7 @@ local pre_process_md = function(str, obj)
                                                                          "%%-")
         if apath then
             apath = apath:gsub(" ", "%%%%20")
-            print(apath)
+            --print(apath)
             content = content:gsub(pattern, "![](" .. HTTP_ROOT .. "/" ..
                                        obj.name .. "/asset/" .. apath .. ")")
         end
diff --git a/doc/views/default/layout.ls b/doc/views/default/layout.ls
index aea9997..c1fa260 100644
--- a/doc/views/default/layout.ls
+++ b/doc/views/default/layout.ls
@@ -111,7 +111,8 @@ local url = __main__:get("url")
                 <?lua
                 if tocdata then
                 ?>
-                    <div  class = "doc-toc">
+                    <button id="btn_toc" class="fa fa-bars"></button>
+                    <div id="doc_toc" class = "doc-toc">
                         <?lua
                             if toc then
                                 toc:set("data", tocdata)
@@ -119,7 +120,7 @@ local url = __main__:get("url")
                             end
                         ?>
                     </div>
-                    <div class="doc-content markdown-body">
+                    <div class="doc-content markdown-body" id="doc_content">
                         <?lua
                             if __main__ then
                                 __main__:render()
@@ -145,6 +146,12 @@ local url = __main__:get("url")
         </div>
         <script>
             window.addEventListener('load', (event) => {
+                $("#btn_toc").click(function(){
+                    $("#doc_toc").toggle();
+                });
+                $("#doc_content").click(function(){
+                    $("#doc_toc").hide();
+                });
                 // tree view events
                 var toggler = document.getElementsByClassName("caret");
                 var i;
diff --git a/os/libs/vfs.lua b/os/libs/vfs.lua
index f3793c1..0184367 100644
--- a/os/libs/vfs.lua
+++ b/os/libs/vfs.lua
@@ -156,14 +156,14 @@ end
 vfs.checkperm = function(path, right)
 	local osfile = vfs.ospath(path)
 	local perm = vfs.perm(osfile)
-	print(osfile)
+	--print(osfile)
 	if not ulib.exists(osfile) then
 		return false,"Resource does not exist"
 	end
 	-- check if user own the file
 	if perm ~= nil then
 		if perm[right] == true then
-			print("Permission granted")
+			--print("Permission granted")
 			return true,osfile
 		else
 			print("Permission denie")
@@ -182,13 +182,13 @@ vfs.perm = function(file)
 	if uid ~= nil and st ~= nil and st.perm ~= nil then
 		--print(JSON.encode({uid, st}))
 		if(uid.id == st.uid) then -- the user owned the file
-			print("file belong to user")
+			--print("file belong to user")
 			return st.perm.owner
 		elseif uid.groups and uid.groups[st.gid] then
-			print("User belong to this group")	
+			--print("User belong to this group")	
 			return st.perm.group
 		else
-			print("User belong to other")
+			--print("User belong to other")
 			return st.perm.other
 		end	
 	else