diff --git a/webroot/js/app.js b/webroot/js/app.js
index a4f1057..7a99f02 100644
--- a/webroot/js/app.js
+++ b/webroot/js/app.js
@@ -1 +1,2 @@
-document.title = config.title
+/* global config */
+document.title = config.title;
diff --git a/webroot/js/config.js b/webroot/js/config.js
index e21ef24..94fbdaf 100644
--- a/webroot/js/config.js
+++ b/webroot/js/config.js
@@ -1,10 +1,12 @@
+/* exported config */
+
 var config = {
   title: 'FreifunkManager - Breminale',
   backend: 'ws://'+location.host+'/websocket',
   map: {
     view: {bound: [53.07093,  8.79464], zoom: 17},
     maxZoom: 20,
-    tileLayer: '//tiles.bremen.freifunk.net/{z}/{x}/{y}.png',
+    tileLayer: 'https://tiles.bremen.freifunk.net/{z}/{x}/{y}.png',
     /* heatmap settings
      size: in meters (default: 30km)
      opacity: in percent/100 (default: 1)
@@ -13,15 +15,15 @@ var config = {
      autoresize: resize heatmap when map size changes (default: false)
      */
     heatmap: {
-    	wifi24: {size: 230, opacity: 0.5, alphaRange: 1},
-    	wifi5: {size: 230, opacity: 0.5, alphaRange: 1}
+      wifi24: {size: 230, opacity: 0.5, alphaRange: 1},
+      wifi5: {size: 230, opacity: 0.5, alphaRange: 1}
     },
     icon:{
-    	warn:{wifi24:20,wifi5:20},
-    	crit:{wifi24:30,wifi5:30}
+      warn:{wifi24:20,wifi5:20},
+      crit:{wifi24:30,wifi5:30}
     },
     geojson: {
-      url: '//events.ffhb.de/data/ground.geojson',
+      url: 'http://events.ffhb.de/data/ground.geojson',
       pointToLayer: function (feature, latlng){
         feature.properties.radius = 10;
         return L.circleMarker(latlng, feature.properties);
diff --git a/webroot/js/domlib.js b/webroot/js/domlib.js
index 11269de..a3c1835 100644
--- a/webroot/js/domlib.js
+++ b/webroot/js/domlib.js
@@ -1,3 +1,5 @@
+/* exported domlin */
+
 var domlib = {};
 (function(){
   domlib.newAt = function(at,eltype) {
@@ -11,4 +13,4 @@ var domlib = {};
         el.removeChild(el.firstChild);
       }
   };
-})()
+})();
diff --git a/webroot/js/gui.js b/webroot/js/gui.js
index 22ada68..219389f 100644
--- a/webroot/js/gui.js
+++ b/webroot/js/gui.js
@@ -1,3 +1,5 @@
+/* exported gui,router */
+/* globals socket,notify,domlib,guiList,guiMap,guiStats,guiNode */
 var gui = {};
 var router = new Navigo(null, true, '#');
 
@@ -8,7 +10,7 @@ var router = new Navigo(null, true, '#');
     var status = document.getElementsByClassName('status')[0];
     if (status === undefined){
       console.log("unable to render, render later");
-      setTimeout(render,100);
+      window.setTimeout(render,100);
       return;
     }
     status.classList.remove('connecting','offline');
@@ -24,7 +26,7 @@ var router = new Navigo(null, true, '#');
 
   function setView(c){
     currentView = c;
-    var main = document.querySelector('main')
+    var main = document.querySelector('main');
     domlib.removeChildren(main);
     currentView.bind(main);
     currentView.render();
@@ -61,12 +63,12 @@ var router = new Navigo(null, true, '#');
 
     if (timeout){
       console("skip rendering, because to often");
-      clearTimeout(timeout);
+      window.clearTimeout(timeout);
     } else {
       render();
     }
-    timeout = setTimeout(reset, 100);
-  }
+    timeout = window.setTimeout(reset, 100);
+  };
 
   window.onload = gui.render;
 })();
diff --git a/webroot/js/gui_list.js b/webroot/js/gui_list.js
index 1475cff..553e05a 100644
--- a/webroot/js/gui_list.js
+++ b/webroot/js/gui_list.js
@@ -1,3 +1,6 @@
+/* exported guiList */
+/* global domlib,store,router */
+
 var guiList = {};
 
 (function(){
@@ -31,11 +34,11 @@ var guiList = {};
         return a.statistics.clients.wifi24 - b.statistics.clients.wifi24;
       case "ChanUtil":
         var aMax = a.statistics.wireless.map(function(d){
-          return d.ChanUtil
+          return d.ChanUtil;
         }).sort(sortNumber);
 
         var bMax = b.statistics.wireless.map(function(d){
-          return d.ChanUtil
+          return d.ChanUtil;
         }).sort(sortNumber);
 
         if(!sortReverse){
@@ -55,8 +58,7 @@ var guiList = {};
     var startdate = new Date();
     startdate.setMinutes(startdate.getMinutes() - 1);
     if(new Date(node.lastseen) < startdate)
-      tr.classList.add('offline')
-    var td;
+      tr.classList.add('offline');
 
     domlib.newAt(tr,'td').innerHTML = moment(node.lastseen).fromNow(true);
     domlib.newAt(tr,'td').innerHTML = node.node_id;
@@ -98,7 +100,7 @@ var guiList = {};
     domlib.newAt(chanUtil,'span').innerHTML = chanUtil5.ChanUtil||'-';
 
     var option = domlib.newAt(tr,'td');
-    edit = domlib.newAt(option,'div');
+    var edit = domlib.newAt(option,'div');
     edit.classList.add('btn');
     edit.innerHTML = 'Edit';
     edit.addEventListener('click',function(){
@@ -115,11 +117,11 @@ var guiList = {};
     if(hostnameFilter && hostnameFilter.value != "")
       nodes = nodes.filter(function(d){
         return d.hostname.toLowerCase().indexOf(hostnameFilter.value) > -1;
-      })
+      });
     if(nodeidFilter && nodeidFilter.value != "")
       nodes = nodes.filter(function(d){
         return d.node_id.indexOf(nodeidFilter.value) > -1;
-      })
+      });
 
     nodes = nodes.sort(sort);
 
diff --git a/webroot/js/gui_map.js b/webroot/js/gui_map.js
index 2ac5232..c06f7f8 100644
--- a/webroot/js/gui_map.js
+++ b/webroot/js/gui_map.js
@@ -1,3 +1,6 @@
+/* exported guiMap */
+/* global config,store,domlib,socket */
+
 var guiMap = {};
 
 (function(){
@@ -87,14 +90,14 @@ var guiMap = {};
         return;
       }
       return [node.location.latitude,node.location.longitude,node.statistics.clients.wifi24 * 2 || 0];
-    })
+    });
     clientLayer24.setData(clientData24);
     var clientData5 = nodes.map(function(node){
       if(node.location === undefined || node.location.latitude === undefined || node.location.longitude === undefined) {
         return;
       }
       return [node.location.latitude,node.location.longitude,node.statistics.clients.wifi5 || 0];
-    })
+    });
     clientLayer5.setData(clientData5);
   }
 
@@ -121,7 +124,7 @@ var guiMap = {};
         maxZoom: config.map.maxZoom,
       }).addTo(map);
 
-    layerControl = L.control.layers().addTo(map);
+    var layerControl = L.control.layers().addTo(map);
 
 
     geoJsonLayer = L.geoJson.ajax(config.map.geojson.url, config.map.geojson);
@@ -141,5 +144,5 @@ var guiMap = {};
     });
 
     update();
-  }
-})()
+  };
+})();
diff --git a/webroot/js/gui_node.js b/webroot/js/gui_node.js
index 8a5b5be..6b5d35b 100644
--- a/webroot/js/gui_node.js
+++ b/webroot/js/gui_node.js
@@ -1,3 +1,5 @@
+/* exported guiNode */
+/* globals store, socket, domlib, config,notify */
 var guiNode = {};
 
 (function(){
@@ -32,10 +34,10 @@ var guiNode = {};
     var startdate = new Date();
     startdate.setMinutes(startdate.getMinutes() - 1);
     if(new Date(node.lastseen) < startdate){
-      ago.classList.add('offline')
+      ago.classList.add('offline');
       ago.classList.remove('online');
     }else{
-      ago.classList.remove('offline')
+      ago.classList.remove('offline');
       ago.classList.add('online');
     }
     ago.innerHTML = moment(node.lastseen).fromNow() + ' ('+node.lastseen+')';
@@ -51,7 +53,7 @@ var guiNode = {};
 
   view.setNodeID = function (nodeID){
     current_node_id = nodeID;
-  }
+  };
 
   view.bind = function(el) {
     container = el;
@@ -69,7 +71,7 @@ var guiNode = {};
 
     var title = domlib.newAt(el,'h1');
     titleName = domlib.newAt(title,'span');
-    title.appendChild(document.createTextNode("  -  "))
+    title.appendChild(document.createTextNode("  -  "));
     titleID = domlib.newAt(title,'i');
 
     var lastseen = domlib.newAt(el,'p');
@@ -86,10 +88,10 @@ var guiNode = {};
     geoJsonLayer = L.geoJson.ajax(config.map.geojson.url, config.map.geojson).addTo(map);
 
     marker = L.marker(config.map.view.bound,{draggable:true,opacity:0.5}).addTo(map);
-    marker.on('dragstart', function(e){
+    marker.on('dragstart', function(){
       editing = true;
     });
-    marker.on('dragend', function(e){
+    marker.on('dragend', function(){
       editing = false;
       var pos = marker.getLatLng();
       updatePosition(pos.lat,pos.lng);
@@ -109,7 +111,7 @@ var guiNode = {};
         return;
       }
       btnGPS.innerHTML = 'Following position';
-      if (!!navigator.geolocation)
+      if (navigator.geolocation !== undefined)
         editLocationGPS = navigator.geolocation.watchPosition(
           function geo_success(position) {
               btnGPS.innerHTML = "Stop following";
@@ -123,7 +125,7 @@ var guiNode = {};
               case error.TIMEOUT:
                 notify.send("error","Find Location timeout");
                 break;
-            };
+            }
           },
           {
             enableHighAccuracy: true,
@@ -131,10 +133,10 @@ var guiNode = {};
             timeout: 27000
           });
       else
-        notify.send("error","Browser did not support Location")
+        notify.send("error","Browser did not support Location");
     });
 
 
     update();
-  }
-})()
+  };
+})();
diff --git a/webroot/js/gui_skelView.js b/webroot/js/gui_skelView.js
index b174ddf..f37b0ce 100644
--- a/webroot/js/gui_skelView.js
+++ b/webroot/js/gui_skelView.js
@@ -1,3 +1,5 @@
+/* exported guiSkel */
+/* globals domlib */
 var guiSkel = {};
 
 (function(){
@@ -22,5 +24,5 @@ var guiSkel = {};
     el = domlib.newAt(container,'div');
 
     update();
-  }
-})()
+  };
+})();
diff --git a/webroot/js/gui_stats.js b/webroot/js/gui_stats.js
index 11913b1..0e53bf8 100644
--- a/webroot/js/gui_stats.js
+++ b/webroot/js/gui_stats.js
@@ -1,3 +1,5 @@
+/* exported guiStats */
+/* globals store, domlib */
 var guiStats = {};
 
 (function(){
@@ -35,13 +37,13 @@ var guiStats = {};
     var tr,title;
 
     tr = domlib.newAt(table,'tr');
-    title = domlib.newAt(tr,'th')
+    title = domlib.newAt(tr,'th');
     title.innerHTML = "Nodes";
     title.setAttribute("colspan","2");
     nodes = domlib.newAt(tr,'td');
 
     tr = domlib.newAt(table,'tr');
-    title = domlib.newAt(tr,'th')
+    title = domlib.newAt(tr,'th');
     title.innerHTML = "Clients";
     title.setAttribute("colspan","2");
     clients = domlib.newAt(tr,'td');
@@ -58,5 +60,5 @@ var guiStats = {};
     clientsWifi5 = domlib.newAt(tr,'td');
 
     update();
-  }
-})()
+  };
+})();
diff --git a/webroot/js/notify.js b/webroot/js/notify.js
index 0dc44cb..ccbdbfe 100644
--- a/webroot/js/notify.js
+++ b/webroot/js/notify.js
@@ -1,12 +1,13 @@
-var notify = {};
+/* exported notify */
 
+var notify = {};
 
 (function(){
   var container;
   var messages = [];
 
   if ("Notification" in window) {
-    Notification.requestPermission();
+    window.Notification.requestPermission();
   }
 
   function removeLast (){
@@ -28,15 +29,15 @@ var notify = {};
     });
   }
 
-  setInterval(removeLast,15000);
+  window.setInterval(removeLast,15000);
 
   notify.bind = function(el) {
     container = el;
   };
 
   notify.send = function(type, text){
-    if("Notification" in window && Notification.permission === "granted") {
-      new Notification(text,{body:type,icon:'/img/logo.jpg'});
+    if("Notification" in window && window.Notification.permission === "granted") {
+      new window.Notification(text,{body:type,icon:'/img/logo.jpg'});
       return;
     }
     if(messages.length > 10){
@@ -47,4 +48,4 @@ var notify = {};
     renderMsg(msg);
   };
 
-})()
+})();
diff --git a/webroot/js/socket.js b/webroot/js/socket.js
index 356ef05..27c074c 100644
--- a/webroot/js/socket.js
+++ b/webroot/js/socket.js
@@ -1,3 +1,5 @@
+/* exported socket */
+/*globals notify,gui,store,config*/
 var socket = {readyState:0};
 
 (function(){
@@ -39,18 +41,18 @@ var socket = {readyState:0};
     console.log("socket closed by server");
     notify.send("warn","Es besteht ein Verbindungsproblem!");
     gui.render();
-    setTimeout(connect, 5000);
+    window.setTimeout(connect, 5000);
   }
 
   function sendnode(node) {
     var msg = {type:"to-update",node:node};
     var string = JSON.stringify(msg);
-    socket.send(string)
+    socket.send(string);
     notify.send("success","Node '"+node.node_id+"' mit neuen Werten wurde übermittelt.");
   }
 
   function connect() {
-    socket = new WebSocket(config.backend);
+    socket = new window.WebSocket(config.backend);
     socket.onopen = onopen;
     socket.onerror = onerror;
     socket.onmessage = onmessage;
diff --git a/webroot/js/store.js b/webroot/js/store.js
index 3ddc7c7..b7a2959 100644
--- a/webroot/js/store.js
+++ b/webroot/js/store.js
@@ -1,3 +1,5 @@
+/* exported store */
+
 var store = {
   _list:{},
   _toupdate:{},