--- a/src/pyams_thesaurus/zmi/resources/js/pyams_thesaurus.js	Tue May 16 11:22:11 2017 +0200
+++ b/src/pyams_thesaurus/zmi/resources/js/pyams_thesaurus.js	Tue May 16 11:23:05 2017 +0200
@@ -1,6 +1,9 @@
-(function($) {
+/* globals MyAMS */
+(function($, globals) {
 
-	PyAMS_thesaurus = {
+	'use strict';
+
+	var PyAMS_thesaurus = {
 
 		tree: {
 
@@ -8,16 +11,23 @@
 			 * Display term sub-nodes
 			 */
 			displaySubNodes: function(term, nodes, source) {
-				if (source === undefined)
+				if (source === undefined) {
 					source = $('span.term:withtext("' + term + '")').siblings('i[data-ams-click-handler]');
+				}
 				var group = source.parents('span.label').siblings('ul.group');
 				var parent = group.closest('ul.group').closest('li');
 				group.empty();
 				for (var index in nodes) {
+					if (!nodes.hasOwnProperty(index)) {
+						continue;
+					}
 					var node = nodes[index];
 					var li = $('<li></li>');
 					node.extracts.reverse();
 					for (var ext_index in node.extracts) {
+						if (!node.extracts.hasOwnProperty(ext_index)) {
+							continue;
+						}
 						var extract = node.extracts[ext_index];
 						var div = $('<div></div>').addClass('pull-right margin-right-2')
 												  .appendTo(li);
@@ -46,11 +56,12 @@
 												 .addClass(node.css_class)
 												 .attr('data-ams-url', node.view)
 												 .attr('data-toggle', 'modal');
-					if (node.expand)
+					if (node.expand) {
 						$('<i></i>').addClass('fa fa-lg fa-plus-circle')
 									.attr('data-ams-click-handler', 'PyAMS_thesaurus.tree.expand')
 									.attr('data-ams-stop-propagation', true)
 									.appendTo(span);
+					}
 					$('<span></span>').addClass('term')
 									  .html(node.label)
 									  .appendTo(span);
@@ -58,8 +69,9 @@
 					$('<ul></ul>').addClass('hidden group')
 								  .appendTo(li);
 					li.appendTo(group);
-					if (node.subnodes)
+					if (node.subnodes) {
 						PyAMS_thesaurus.tree.displaySubNodes(node.label, node.subnodes);
+					}
 				}
 				group.removeClass('hidden');
 				source.removeClass('fa-gear')
@@ -99,8 +111,9 @@
 			 */
 			updateTerm: function(options) {
 				var element = $('span.term:withtext("' + options.term + '")').siblings('i[data-ams-click-handler]');
-				if (element.hasClass('fa-minus-circle'))
+				if (element.hasClass('fa-minus-circle')) {
 					PyAMS_thesaurus.tree.collapse.call(element);
+				}
 				PyAMS_thesaurus.tree.expand.call(element);
 			},
 
@@ -116,7 +129,7 @@
 						   .off('mouseover')
 						   .on('mouseover', function() {
 								$(this).css('background-color', '');
-						   })
+						   });
 				});
 			},
 
@@ -130,11 +143,12 @@
 				return function() {
 					var switcher = $('i.fa', $(this));
 					var extract = switcher.parents('tr:first').data('ams-element-name');
-					if (switcher.hasClass('fa-eye-slash'))
+					if (switcher.hasClass('fa-eye-slash')) {
 						PyAMS_thesaurus.tree.showExtract.call(this, extract, switcher);
-					else
+					} else {
 						PyAMS_thesaurus.tree.hideExtract.call(this, extract, switcher);
-				}
+					}
+				};
 			},
 
 			/**
@@ -170,8 +184,9 @@
 
 	$(document).on('click', 'i.extract-checker', function(e) {
 		var checker = $(this);
-		if (checker.hasClass('disabled'))
+		if (checker.hasClass('disabled')) {
 			return;
+		}
 		var term = $('span.term', checker.closest('div').siblings('span'));
 		MyAMS.ajax.post('switch-extract.json', {term: term.text(),
 												extract: checker.data('ams-extract-name')}, function(data) {
@@ -194,5 +209,6 @@
 			}
 		});
 	});
+	globals.PyAMS_thesaurus = PyAMS_thesaurus;
 
-})(jQuery);
+})(jQuery, this);