diff -r 0a2b4991d48c -r 0bb70072a56f client/annotviz/app/js/utils.js
--- a/client/annotviz/app/js/utils.js	Fri Jan 23 01:08:34 2015 +0100
+++ b/client/annotviz/app/js/utils.js	Fri Jan 23 02:00:19 2015 +0100
@@ -4,6 +4,8 @@
 * basic tools
 *
 */
+/*jshint bitwise: false*/
+/*jshint camelcase: false */
 
 'use strict';
 
@@ -12,12 +14,12 @@
 var moment = require('moment');
 
 function formatTime (ts) {
-	return moment(ts).format("HH:mm:ss");
+    return moment(ts).format('HH:mm:ss');
 }
 
 function colorToHex(c) {
-	var m = /rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/.exec(c);
-	return m ? '#' + (1 << 24 | m[1] << 16 | m[2] << 8 | m[3]).toString(16).substr(1) : c;
+    var m = /rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/.exec(c);
+    return m ? '#' + (1 << 24 | m[1] << 16 | m[2] << 8 | m[3]).toString(16).substr(1) : c;
 }
 
 function getAnnotCategories(urlCategories, annotCategories) {
@@ -28,35 +30,35 @@
         var data = res.target.json;
 
         while(annotCategories.length > 0) {
-        	annotCategories.pop();
+            annotCategories.pop();
         }
 
         data.sessions.forEach(function(session) {
             var annotCat = {
                 ts: session.start_ts === null ? new Date(0) : Date.parse(session.start_ts),
                 colors: {}
-            }
+            };
             var categoriesJson = session.categories_json;
             annotCat.order = categoriesJson.order;
             if (typeof(annotCat.order['default']) === 'undefined'){
-            	annotCat.order.push('default');
+                annotCat.order.push('default');
             }
-			var catList = _.clone(categoriesJson.categories);
-			while(catList.length > 0) {
-				var cat = catList.pop();
-				if(cat.code) {
-					annotCat.colors[cat.code] = colorToHex(cat.color);
-				}
-				if(cat.subcategories) {
-					catList = catList.concat(cat.subcategories);
-				}
-			}
+            var catList = _.clone(categoriesJson.categories);
+            while(catList.length > 0) {
+                var cat = catList.pop();
+                if(cat.code) {
+                    annotCat.colors[cat.code] = colorToHex(cat.color);
+                }
+                if(cat.subcategories) {
+                    catList = catList.concat(cat.subcategories);
+                }
+            }
             categoriesJson.categories.forEach(function(cat) {
-				if(cat.code) {
-                	annotCat.colors[cat.code] = colorToHex(cat.color);
-				}
+                if(cat.code) {
+                    annotCat.colors[cat.code] = colorToHex(cat.color);
+                }
             });
-            annotCat.defaultColor = categoriesJson.defaultColor || "#536991";
+            annotCat.defaultColor = categoriesJson.defaultColor || '#536991';
             annotCategories.push(annotCat);
         });
     });
@@ -66,7 +68,7 @@
 }
 
 module.exports = {
-	formatTime: formatTime,
-	getAnnotCategories: getAnnotCategories,
-	colorToHex: colorToHex
+    formatTime: formatTime,
+    getAnnotCategories: getAnnotCategories,
+    colorToHex: colorToHex
 };