diff --git a/kfet/static/kfet/js/kfet.api.js b/kfet/static/kfet/js/kfet.api.js
index 0fa1ef32..31221a1f 100644
--- a/kfet/static/kfet/js/kfet.api.js
+++ b/kfet/static/kfet/js/kfet.api.js
@@ -1255,15 +1255,15 @@ class Formatter {
         var prefix_prop = options.prefix_prop !== undefined ? options.prefix_prop : '.';
         var prefix_attr = options.prefix_attr !== undefined ? options.prefix_attr : '';
 
-        for (var i in props) {
-            var selector = prefix_prop + props[i];
-            var html = options.empty_props ? '' : this.get_prop(object, props[i]);
+        for (let prop of props) {
+            var selector = prefix_prop + prop;
+            var html = options.empty_props ? '' : this.get_prop(object, prop);
             $container.find( selector ).html( html );
         }
 
-        for (var i in attrs) {
-            var name = prefix_attr + attrs[i];
-            var value = options.empty_attrs ? '' : this.get_attr(object, attrs[i]);
+        for (let attr of attrs) {
+            var name = prefix_attr + attr;
+            var value = options.empty_attrs ? '' : this.get_attr(object, attr);
             $container.attr( name, value );
         }
 
diff --git a/kfet/static/kfet/js/kfet.js b/kfet/static/kfet/js/kfet.js
index 332d9349..2485ddd2 100644
--- a/kfet/static/kfet/js/kfet.js
+++ b/kfet/static/kfet/js/kfet.js
@@ -55,6 +55,21 @@ function floatCheck(v) {
 
 
 
+function intCheck(v) {
+    return Number.parseInt(v);
+}
+
+function floatCheck(v) {
+    if (typeof v === 'number')
+        return v;
+    return Number.parseFloat(v);
+}
+
+function booleanCheck(v) {
+    return v == true;
+}
+
+
 $(document).ready(function() {
     $(window).scroll(function() {
         if ($(window).width() >= 768 && $(this).scrollTop() > 72.6) {
diff --git a/kfet/static/kfet/js/kpsul.js b/kfet/static/kfet/js/kpsul.js
index a9af9a7a..97e0c29d 100644
--- a/kfet/static/kfet/js/kpsul.js
+++ b/kfet/static/kfet/js/kpsul.js
@@ -52,15 +52,15 @@ class AccountManager {
         if (this.is_empty()) {
             var trigramme = this.selection.get();
             if (trigramme.isValidTri()) {
-                var url_base = "{% url 'kfet.account.create' %}";
+                var url_base = Urls['kfet.account.create']();
                 var url = url_base + '?trigramme=' + encodeURIComponent(trigramme);
                 buttons += '<a href="'+url+'" class="btn btn-primary" target="_blank" title="Créer ce compte"><span class="glyphicon glyphicon-plus"></span></a>';
             } else {  /* trigramme input is empty or invalid */
                 buttons += '<button class="btn btn-primary search" title="Rechercher"><span class="glyphicon glyphicon-search"></span></button>';
             }
         } else {  /* an account is loaded */
-            var url = Urls['kfet.account.update'](encodeURIComponent(this.account.trigramme));
-            buttons += '<a href="'+url+'" class="btn btn-primary" target="_blank" title="Modifier ce compte"><span class="glyphicon glyphicon-cog"></span></a>';
+            var url = this.account.url_object;
+            buttons += '<a href="'+url+'" class="btn btn-primary" target="_blank" title="Détails du compte"><span class="glyphicon glyphicon-cog"></span></a>';
         }
 
         this._$container.find('.buttons').html(buttons);
@@ -189,13 +189,14 @@ class AccountSearch {
         var that = this;
 
         this._$input.yourlabsAutocomplete({
-            url: '{% url "kfet.account.search.autocomplete" %}',
+            url: Urls['kfet.account.search.autocomplete'](),
             minimumCharacters: 2,
             id: 'search_autocomplete',
             choiceSelector: '.choice',
             placeholder: "Chercher un utilisateur K-Fêt",
             container: that._$results_container,
             box: that._$results_container,
+            fixPosition: function() {},
         });
 
         return this;
@@ -345,11 +346,10 @@ class CheckoutSelection {
 
         this._init_events();
 
-        this.choices = [
-            for (option of this._$input.find('option'))
-                if ($(option).attr('value') != '')
-                    parseInt($(option).attr('value'))
-        ];
+        this.choices = this._$input.find('option[value!=""]').toArray()
+            .map(function(opt) {
+                return parseInt($(opt).attr('value'));
+            });
     }
 
     _init_events() {
diff --git a/kfet/templates/kfet/transfers_create.html b/kfet/templates/kfet/transfers_create.html
index 83a09762..4728121f 100644
--- a/kfet/templates/kfet/transfers_create.html
+++ b/kfet/templates/kfet/transfers_create.html
@@ -4,6 +4,7 @@
 {% block extra_head %}
 <link rel="stylesheet" type="text/css" href="{% static 'kfet/css/transfers_form.css' %}">
 <script type="text/javascript" src="{% static 'kfet/js/js.cookie.js' %}"></script>
+<script type="text/javascript" src="{% url 'js_reverse' %}"></script>
 {% endblock %}
 
 {% block title %}Nouveaux transferts{% endblock %}
@@ -51,14 +52,12 @@
 
 <script type="text/javascript">
 $(document).ready(function () {
-    function getAccountData(trigramme, callback = function() {}) {
-        $.ajax({
-            dataType: "json",
-            url     : "{% url 'kfet.account.read.json' %}",
-            method  : "POST",
-            data    : { trigramme: trigramme },
-            success : callback,
-        });
+    function getAccountData(trigramme, callback) {
+        callback = callback || $.noop;
+        $.getJSON(Urls['kfet.account.read'](trigramme), {
+            'format': 'json',
+        })
+        .done(callback);
     }
 
     function updateAccountData(trigramme, $input) {
diff --git a/kfet/views.py b/kfet/views.py
index c901bff7..bdb5c1e1 100644
--- a/kfet/views.py
+++ b/kfet/views.py
@@ -858,6 +858,7 @@ def kpsul_checkout_data(request, pk):
             last_statement,
             fields=['id', 'at', 'balance_new', 'balance_old', 'by']
         )
+        last_statement_data['by'] = str(last_statement.by)
         # ``at`` is not editable, so skipped by ``model_to_dict``
         last_statement_data['at'] = last_statement.at
         data['laststatement'] = last_statement_data