diff --git a/nodejs/public/javascripts/safechat.js b/nodejs/public/javascripts/safechat.js
index db17ee3..001d8ed 100644
--- a/nodejs/public/javascripts/safechat.js
+++ b/nodejs/public/javascripts/safechat.js
@@ -37,6 +37,11 @@
 //       1         2         3         4         5         6         7         8
 // 45678901234567890123456789012345678901234567890123456789012345678901234567890
 
+function log() {
+  //[].push.call(arguments, (new Error()).stack)
+  console.log.apply(null, arguments)
+}
+
 function SafeChat() {
 
   /// Create UID from a name by appending an E-Mail
@@ -105,9 +110,9 @@ function SafeChat() {
 
     //------------------------------------------------------------------------------
     if (openpgp.initWorker("openpgp.worker.min.js"))
-      console.log("asynchronous openpgp enabled")
+      log("asynchronous openpgp enabled")
     else
-      console.log("asynchronous openpgp failed")
+      log("asynchronous openpgp failed")
     
   }
 
@@ -156,16 +161,19 @@ function SafeChat() {
     var socket = io.connect()
     
     function broadcast(signal, data) {
-      console.log("<=snd "+signal)
+      log('    function broadcast(signal, data)')
+      log("<=snd "+signal)
       socket.broadcast.emit(signal, data)
     }
 
     function emit(signal, data, next) {
-      console.log("<-snd "+signal)
+      log('    function emit(signal, data, next)')
+      log("<-snd "+signal)
       socket.emit(signal, data, next)
     }
 
     this.lookup = function(usr, next) {
+      log('    this.lookup = function(usr, next)')
       emit('user', usr, next)
     }
 
@@ -198,22 +206,26 @@ function SafeChat() {
 
     /// Padding for numbers in dates
     function pad(n) {
+      log('    function pad(n)')
       return n<10 ? '0'+n : n
     }
 
     /// escape text to show in html @see htmldec
     function htmlenc(html) {
+      log('    function htmlenc(html)')
       return $('<div/>').text(html).html()
     }
 
     /// decode html encoded text @see htmlenc
     function htmldec(data) {
+      log('    function htmldec(data)')
       return $('<div/>').html(data).text()
     }
 
     /// alert user accoustically or by vibration
     /** alert user, e.g. that a new message has arrived. */
     function beep() {
+      log('    function beep()')
       if (navigator.vibrate) navigator.vibrate(1000)
       (new Audio("sounds/beep.mp3")).play()
     }
@@ -222,6 +234,7 @@ function SafeChat() {
     /** something completely failed, abort
         @param msg  */
     function fatal(msg) {
+      log('    function fatal(msg)')
       if (nexttimer) clearTimeout(nexttimer)
       if (msg) {
         error(msg)
@@ -236,6 +249,7 @@ function SafeChat() {
                Strings are shown to the user, structures are logged only.
         @param next (optional) next function to call */
     function error(data, next) {
+      log('    function error(data, next)')
       if (nexttimer) clearTimeout(nexttimer)
       $("#status").hide()
       $("#status").addClass("error")
@@ -244,14 +258,14 @@ function SafeChat() {
       if (data) {
         if (typeof data == 'string') {
           $("#status").html(data)
-          console.log("error: "+data)
+          log("error: "+data)
         } else {
           $("#status").html('error')
-          console.log("error: "+JSON.stringify(data))
+          log("error: "+JSON.stringify(data))
         }
       } else {
         $("#status").html('error')
-        console.log("error")
+        log("error")
       }
       $("#status").show()
       if (next) nexttimer = setTimeout(function() {
@@ -264,16 +278,17 @@ function SafeChat() {
     /** shows an notice message and logs to console.
         @param text (optional) The data is a string. */
     function notice(text) {
+      log('    function notice(text)')
       $("#status").hide()
       $("#status").addClass("notice")
       $("#status").removeClass("error")
       $("#status").removeClass("success")
       if (text) {
         $("#status").html(text)
-        console.log("notice: "+text)
+        log("notice: "+text)
       } else {
         $("#status").html('')
-        console.log("notice")
+        log("notice")
       }
       $("#status").show()
     }
@@ -282,16 +297,17 @@ function SafeChat() {
     /** shows an success message and logs to console.
         @param text (optional) The data is a string. */
     function success(text) {
+      log('    function success(text)')
       $("#status").hide()
       $("#status").addClass("success")
       $("#status").removeClass("error")
       $("#status").removeClass("notice")
       if (text) {
         $("#status").html(text)
-        console.log("success: "+text)
+        log("success: "+text)
       } else {
         $("#status").html('')
-        console.log("success")
+        log("success")
       }
       $("#status").show()
     }
@@ -300,7 +316,8 @@ function SafeChat() {
     /** @param id html id to be shown.
         @param msg (optional) the success message text */
     function show(id, msg) {
-      console.log("state: "+id)
+      log('    function show(id, msg)')
+      log("state: "+id)
       if (msg) success(msg); else $("#status").hide();
       $("#main").children(":not(#"+id+")").hide()
       $("#main #"+id).show()
@@ -309,7 +326,8 @@ function SafeChat() {
 
     /// show server connected status
     function connected() {
-      console.log("server connected")
+      log('    function connected()')
+      log("server connected")
       $("#connectionstatus #bad").hide()
       $("#connectionstatus #good").show()
       success("server connected")
@@ -317,18 +335,21 @@ function SafeChat() {
 
     /// show server disconnected status
     function disconnected() {
-      console.log("server disconnected")
+      log('    function disconnected()')
+      log("server disconnected")
       $("#connectionstatus #good").hide()
       $("#connectionstatus #bad").show()
       error("server disconnected", true)
     }
     
     /// toggle menu display
-    function togglemenu() {
+    this.togglemenu = function() {
+      log('    function togglemenu()')
       $("#menu").toggle()
     }
 
     function checkFeature(id, query) {
+      log('    function checkFeature(id, query)')
       if (query) $('#'+id)
         .css('color', 'green')
         .prepend('<span>&#x2714;</span>')
@@ -338,6 +359,7 @@ function SafeChat() {
     }
 
     this.checkFeatures = function() {
+      log('    this.checkFeatures = function()')
       $('ul.features').css('list-style-type', 'none')
       checkFeature("localstorage", Storage)
       checkFeature("indexeddb", window.indexedDB)
@@ -350,6 +372,7 @@ function SafeChat() {
     /// @{
     
     this.newuser = function() {
+      log('    this.newuser = function()')
       show('newuser')
     }
 
@@ -357,12 +380,14 @@ function SafeChat() {
     var pwd = false
 
     function invalid(usr) {
+      log('    function invalid(usr)')
       return !user || !user.exists && user.name.length<3
     }
     
     this.available = function(usr) {
+      log('    this.available = function(usr)')
       user = usr
-      console.log("props:", invalid(user) || !pwd)
+      log("props:", invalid(user) || !pwd)
       $("#createuser").prop(":disabled", invalid(user) || !pwd)
       if (user.length==0)
         notice("please chose a user name")
@@ -377,8 +402,10 @@ function SafeChat() {
     }
     
     this.passwords = function(pwd1, pwd2) {
+      log('    this.passwords = function(pwd1, pwd2)')
+      return
       pwd = pwd1==pwd2 && pwd1.length>5
-      console.log("props:", invalid(user) || !pwd)
+      log("props:", invalid(user) || !pwd)
       $("#createuser").prop(":disabled", invalid(user) || !pwd)
       if (pwd1.length==0)
         notice('please chose a password')
@@ -395,6 +422,7 @@ function SafeChat() {
     /// @}
 
     function DataTransfer() {
+      log('    function DataTransfer()')
       
       var reboottimer = null
       var data = new DataTransfer()
@@ -419,6 +447,7 @@ function SafeChat() {
       
       /// Upload Profile Backup
       function restore(evt) {
+        log('      function restore(evt)')
         for (var i=0, f; f=evt.target.files[i]; ++i) {
           var file = f
           var reader = new FileReader()
@@ -431,7 +460,7 @@ function SafeChat() {
             localStorage.pubkey = parsed.pubkey
             localStorage.privkey = parsed.privkey
             success("backup is restored")
-            console.log("reboot after restore in 2s")
+            log("reboot after restore in 2s")
             if (!reboottimer && reboot) reboottimer = setTimeout(function() {
               reboottimer = null
             }, 2000)
@@ -452,6 +481,7 @@ function SafeChat() {
   //==============================================================================
   /// @class Controller defines the programm flow
   function Controller(view) {
+    log('  function Controller(view)')
     
     var db = new DataBase()
     var crypto = new Crypto(this)
@@ -468,35 +498,48 @@ function SafeChat() {
     
     /// @}
 
+    /// @name access to view
+    /// @{
+
+    this.togglemenu = view.togglemenu
+    
+    /// @}
+
     /// @name signals from server
     /// @{
     
     function fail(msg) {
-      console.log('rcv-> fail('+msg+')')
+      log('    function fail(msg)')
+      log('rcv-> fail('+msg+')')
       error(msg)
     }
 
     function loggedin() {
-      console.log("rcv-> login")
+      log('    function loggedin()')
+      log("rcv-> login")
       success("login successful")
       chat()
     }
     
     function user(usr) {
-      console.log("rcv-> user")
+      log('    function user(usr)')
+      log("rcv-> user")
       if (usr.exits) users.add(usr)
     }
 
     function users() {
-      console.log("rcv-> users")
+      log('    function users()')
+      log("rcv-> users")
     }
     
     function message(msg) {
-      console.log("rcv-> message")
+      log('    function message(msg)')
+      log("rcv-> message")
     }
     
     function messages(msgs) {
-      console.log("rcv-> messages")
+      log('    function messages(msgs)')
+      log("rcv-> messages")
     }
 
     this.connected = view.connected
@@ -513,6 +556,8 @@ function SafeChat() {
     /// @{
 
     this.lookup = function(usr) {
+      log('    this.lookup = function(usr)')
+      return
       if (usr.length > 2) communication.lookup(uid(usr), function(res) {
         view.available(res)
       })
@@ -521,6 +566,7 @@ function SafeChat() {
     this.checkpasswords = view.passwords
 
     this.createuser = function(name, pwd) {
+      log('    this.createuser = function(name, pwd)')
       crypto.createuser(name, name+'@'+hostname, pwd).then(function() {
         if (!crypto.password(pwd))
           fatal("private key decryption failed")
@@ -534,38 +580,52 @@ function SafeChat() {
     /// @}
 
     function initBrowser() {
-      window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
+      log('    function initBrowser()')
+      log('A')
+      //window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
+      log('B')
       window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction
+      log('C')
       window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange
+      log('D')
       navigator.vibrate = navigator.vibrate || navigator.webkitVibrate || navigator.mozVibrate || navigator.msVibrate
+      log('E')
+      log('    end of function initBrowser()')
       return window.indexedDB && window.crypto.getRandomValues && Storage
     }
 
     var newuser = view.newuser
 
     function chat() {
+      log('    function chat()')
     }
 
     function password() {
-      
+      log('    function password()')
     }
 
     function login() {
+      log('    function login()')
       if (!crypto.key()) newuser(); else password();
     }
 
     this.run = function() {
+      log('    this.run = function()')
       login()
     }
 
     this.start = function() {
+      log('    this.start = function()')
       view.reboot = this.run
       var compatible = initBrowser()
       view.checkFeatures()
-      if (!compatible)
+      if (!compatible) {
+        log('incompatible')
         view.fatal("your browser is not supported")
-      else
+      } else {
+        log('incompatible')
         this.run()
+      }
     }
     
   }
@@ -582,12 +642,14 @@ var filecontent = new Array() ///< temporary storage for attachments
 var reboottimer = null
 
 function connectionstatus() {
+  log('function connectionstatus()')
   if (socket.connected) connected(); else disconnected();
 }
 
 /// Configure local groups
 /** … */
 function groups() {
+  log('function groups()')
 }
 
 /// Check if password is set and matches the repeated password
@@ -602,6 +664,7 @@ function groups() {
    @param pwd The password.
    @param pwd2 The repeated password. */
 function checkpwd(pwd, pwd2) {
+  log('function checkpwd(pwd, pwd2)')
   $("#register").submit(function(event) {
     return false
   })
@@ -624,6 +687,7 @@ function checkpwd(pwd, pwd2) {
 /** Calls checknewuser.php on server and enables the message submit
    button if the receiver of the message exists on the server. */
 function checkpartner(user) {
+  log('function checkpartner(user)')
   $("#chat").submit(function(event) {
     return false
   })
@@ -633,6 +697,7 @@ function checkpartner(user) {
 /// Create Local Public-/Private-Key Pair
 /** Called if user has not yet his keys, just generates a new key pair. */
 function createkeypair(user, pwd) {
+  log('function createkeypair(user, pwd)')
   notice("generating keys")
   openpgp.generateKey({
     numBits: 4096,
@@ -644,7 +709,7 @@ function createkeypair(user, pwd) {
     localStorage.privkey = keyPair.privateKeyArmored
     login()
   }).catch(function(e) {
-    console.log(e)
+    log(e)
     error("generating key pairs failed")
   })
 }
@@ -652,6 +717,7 @@ function createkeypair(user, pwd) {
 /// Get Own Public Key
 /** @return public key object */
 function publicKey() {
+  log('function publicKey()')
   if (typeof localStorage.pubkey == 'undefined') {
     if (typeof localStorage.pubKey == 'undefined') {
       return null
@@ -666,6 +732,7 @@ function publicKey() {
 /// Get Own Private Key
 /** @return private key object */
 function privateKey() {
+  log('function privateKey()')
   if (typeof localStorage.privkey == 'undefined') {
     if (typeof localStorage.privKey == 'undefined') {
       return null
@@ -680,6 +747,7 @@ function privateKey() {
 /// Get Own User Name
 /** Get user name as user id of first public key */
 function userid() {
+  log('function userid()')
   if (!publicKey() ||
       publicKey().keys.length < 1 ||
       publicKey().keys[0].getUserIds().length < 1) return null
@@ -689,6 +757,7 @@ function userid() {
 /// Clear Message Text And Attachments
 /** Does not remove the receiver's name */
 function clearmessage() {
+  log('function clearmessage()')
   $("#message").prop(":disabled", true)
   filecontent = new Array()
   $('#preview').empty()
@@ -697,6 +766,7 @@ function clearmessage() {
 }
 
 function guessfilename(mimetype, user, date) {
+  log('function guessfilename(mimetype, user, date)')
   if (!user) user = userid()
     if (!date) date = new Date()
       var ext = mimetype.replace(/.*\/(x-)?/i, "")
@@ -706,8 +776,9 @@ function guessfilename(mimetype, user, date) {
 
 /// Display Image Attachments
 function attachments(files, id, from, date) {
+  log('function attachments(files, id, from, date)')
   if (files) files.forEach(function(file) {
-    console.log(file)
+    log(file)
     if (!file.name) file.name = guessfilename(file.type, from, date)
       var a = document.createElement('a')
     a.href = file.content
@@ -737,6 +808,7 @@ function attachments(files, id, from, date) {
 var recorder
 
 function done() {
+  log('function done()')
   if (recorder) {
     recorder.stop()
     recorder.recording(function(data) {
@@ -747,6 +819,7 @@ function done() {
 }
 
 function abort() {
+  log('function abort()')
   if (recorder) {
     $("#videorecorder").hide()
     recorder.release()
@@ -757,6 +830,7 @@ function abort() {
 
 /// Record Video from builtin camera
 function recordvideo() {
+  log('function recordvideo()')
   try {
     abort()
     $("#videorecorder").show()
@@ -776,12 +850,13 @@ function recordvideo() {
       recorder.start()
     })
   } catch (e) {
-    console.log(e)
+    log(e)
     error("cannot access camera", true)
   }
 }
 
 function previewfile(content, type, name) {
+  log('function previewfile(content, type, name)')
   if (!name) name = guessfilename(type)
     if (type.match('^image/')) {
       var img = document.createElement("img")
@@ -836,6 +911,7 @@ function previewfile(content, type, name) {
 
    Stores data in global variable @ref filecontent. */
 function fileupload(evt) {
+  log('function fileupload(evt)')
   if (!window.FileReader)
     return error("your browser does not support file upload", true)
   for (var i=0, f; f=evt.target.files[i]; ++i) {
@@ -857,6 +933,7 @@ function fileupload(evt) {
 
    @param name The receiver's name. */
 function setreceiver(name) {
+  log('function setreceiver(name)')
   $("#recv").val(name)
   checkpartner(name)
   $("#msg").focus()
@@ -864,21 +941,23 @@ function setreceiver(name) {
 
 var userMap = null
 function users(userlist) {
-  console.log("rcv-> users")
+  log('function users(userlist)')
+  log("rcv-> users")
   userMap = new Array()
   $("#allusers").empty()
   userlist.forEach(function(usr) {
     userMap[usr.name] = usr.pubkey
     $("#allusers").append('<option value="'+htmlenc(usr.name)+'">')
     $("#allusers").hide()
-    console.log("   user: "+usr.name)
+    log("   user: "+usr.name)
   })
   localStorage.userMap = JSON.stringify(userMap)
 }
 
 function user(usr) {
-  if (usr.exists) console.log("rcv-> user("+usr.name+")")
-    else console.log("rcv-> user("+usr.name+"): name is available")
+  log('function user(usr)')
+  if (usr.exists) log("rcv-> user("+usr.name+")")
+    else log("rcv-> user("+usr.name+"): name is available")
   if ($("#newuser").is(":visible") && usr.name==uid($('#user').val())) {
     // same username as in the create user form
     $("#createuser").prop("disabled", usr.exists) // todo: check password
@@ -912,13 +991,15 @@ function user(usr) {
 }
 
 function queryuser(usr) {
-  console.log("query user: "+uid(usr))
+  log('function queryuser(usr)')
+  log("query user: "+uid(usr))
   socket.emit("user", uid(usr))
 }
 
 /// Get a user's public key.
 /** The first time, gets it from the server, later from the cache. */
 function getPublicKey(user) {
+  log('function getPublicKey(user)')
   var deferredObject = $.Deferred()
   if (userMap && userMap[user]) deferredObject.resolve(userMap[user])
     else deferredObject.reject("unknown user")
@@ -927,7 +1008,8 @@ function getPublicKey(user) {
 
 /// Received a list of messages from server
 function messages(msgs) {
-  console.log("rcv-> messages("+msgs.length+")")
+  log('function messages(msgs)')
+  log("rcv-> messages("+msgs.length+")")
   if (!password || !privateKey())
     return setTimeout(function() {emit("messages")}, 1000) // try again later
   show("allmessages")
@@ -938,7 +1020,8 @@ function messages(msgs) {
 
 /// Received a message from server
 function message(m, internal) {
-  if (!internal) console.log("rcv-> message("+m.user+")")
+  log('function message(m, internal)')
+  if (!internal) log("rcv-> message("+m.user+")")
     if (!password || !privateKey()) return
   var key=openpgp.key.readArmored(m.pubkey)
   if (key.err) return error("key of sender unreadable", true)
@@ -990,6 +1073,7 @@ function message(m, internal) {
 /** User wants to send a message. Encrypt message with own private and
    the receiver's public key, then send it to the server. */
 function sendmessage(recv, txt) {
+  log('function sendmessage(recv, txt)')
   notice("1/3 preparing message …")
   $("#message").prop(":disabled", true)
   getPublicKey(recv) // get receiver's public key
@@ -1031,6 +1115,8 @@ function sendmessage(recv, txt) {
 
    @param pwd The password to check. */
 function setpw(pwd) {
+  log('function setpw(pwd)')
+  return
   if (privateKey().keys[0].decrypt(pwd)) {
     success("password matches")
     $("#removeKey").hide()
@@ -1047,12 +1133,14 @@ function setpw(pwd) {
    setpw() continues automatically. No submit is required by the
    user. */
 function getpwd() {
+  log('function getpwd()')
   if (password) return
   $("#removeKey").show()
   show("getpwd")
 }
 
 function deleteUser() {
+  log('function deleteUser()')
   var uid = userid()
   localStorage.removeItem(pubkey)
   localStorage.removeItem(privkey)
@@ -1060,6 +1148,7 @@ function deleteUser() {
 }
 
 function removeKey() {
+  log('function removeKey()')
   togglemenu()
   $("#removeKey").hide()
   show('forgotpassword')
@@ -1070,6 +1159,7 @@ function removeKey() {
    get() which polls for new messages. */
 var firsttime = true
 function chat() {
+  log('function chat()')
   if (!password) return getpwd()
     show("chat")
   if (firsttime && $('#msgs').is(':empty')) {
@@ -1091,6 +1181,7 @@ function chat() {
    different, then this is a complete failure, something went
    terribly wrong. */
 function login() {
+  log('function login()')
   $("#username").html(userid()+"@"+hostname)
   emit("login", {name: userid(),
                  pubkey: localStorage.pubkey})
@@ -1101,11 +1192,13 @@ function login() {
 /** Shows user creation form. On submit, a private key is generated in
    createkeypair(), then login() creates the user. */
 function newuser() {
+  log('function newuser()')
   show("newuser")
 }
 
 /// Check if local storage is available
 function checkLocalStorage() {
+  log('function checkLocalStorage()')
   var test = 'test'
   try {
     localStorage.setItem(test, test)
@@ -1121,6 +1214,7 @@ function checkLocalStorage() {
 /// Initial Function: Startup
 /** Decide whether to login or to create a new user */
 function start() {
+  log('function start()')
   $("#menu").hide()
   //show("startup")
   if (checkLocalStorage())
@@ -1131,7 +1225,7 @@ function start() {
         login()
       }
     } catch (m) {
-      console.log(m.stack)
+      log(m.stack)
       error(m)
     }
 }
@@ -1139,10 +1233,12 @@ function start() {
 var safechat = new SafeChat()
 
 function init() {
+  log('function init()')
   safechat.start()
 }
 
 function old() {
+  log('function old()')
   /// On Load, Call @ref start
   $(window.onbeforeunload = function() {
     return "Are you sure you want to navigate away?"
@@ -1155,9 +1251,9 @@ function old() {
   }, false)
   connectionstatus()
   if (openpgp.initWorker("openpgp.worker.min.js"))
-    console.log("asynchronous openpgp enabled")
+    log("asynchronous openpgp enabled")
   else
-    console.log("asynchronous openpgp failed")
+    log("asynchronous openpgp failed")
   emit('users')
   start()
 }
diff --git a/nodejs/sockets/index.js b/nodejs/sockets/index.js
index d9a5311..b00a43a 100644
--- a/nodejs/sockets/index.js
+++ b/nodejs/sockets/index.js
@@ -83,6 +83,7 @@ module.exports = function(sql) {
       console.log("-> signal: user("+name+")");
       var result = {name: name, exists: false, pubkey: null};
       sql.query("select pubkey from user where name = ?", [name], function(err, res, flds) {
+        console.log('user in db', err, res, flds)
         if (!err && res && res.length) {
           result.exists = true;
           result.pubkey = res[0].pubkey;
diff --git a/nodejs/views/index.ejs b/nodejs/views/index.ejs
index 809dd22..8a50d6b 100644
--- a/nodejs/views/index.ejs
+++ b/nodejs/views/index.ejs
@@ -24,7 +24,7 @@
           <span id="good" title="connected" style="display: none">&#x2714;</span>
           <span id="bad" title="disconnected">&#x2718;</span>
         </span>
-        <img id="menuicon" onclick="togglemenu()" src="images/menu.svg" />
+        <img id="menuicon" onclick="safechat.togglemenu()" src="images/menu.svg" />
       </div>
     </div>