diff --git a/admin-dev/ajax.php b/admin-dev/ajax.php
index 8f41e44cb..332cd394d 100644
--- a/admin-dev/ajax.php
+++ b/admin-dev/ajax.php
@@ -26,45 +26,12 @@
 
 define('_PS_ADMIN_DIR_', getcwd());
 include(_PS_ADMIN_DIR_.'/../config/config.inc.php');
+
 /* Getting cookie or logout */
 require_once(_PS_ADMIN_DIR_.'/init.php');
 
 $context = Context::getContext();
 
-if (Tools::isSubmit('changeParentUrl'))
-	echo '<script type="text/javascript">parent.parent.document.location.href = "'.addslashes(urldecode(Tools::getValue('changeParentUrl'))).'";</script>';
-if (Tools::isSubmit('installBoughtModule'))
-{
-	$file = false;
-	while ($file === false OR file_exists(_PS_MODULE_DIR_.$file))
-		$file = uniqid();
-	$file = _PS_MODULE_DIR_.$file.'.zip';
-	$sourceFile = 'http://addons.prestashop.com/iframe/getboughtfile.php?id_order_detail='.Tools::getValue('id_order_detail').'&token='.Tools::getValue('token');
-	if (!copy($sourceFile, $file))
-	{
-		if (!($content = file_get_contents($sourceFile)))
-			die(displayJavascriptAlert('Access denied: Please download your module directly from PrestaShop Addons website'));
-		elseif (!file_put_contents($file, $content))
-			die(displayJavascriptAlert('Local error: your module directory is not writable'));
-	}
-	$first6 = fread($fd = fopen($file, 'r'), 6);
-	if (!strncmp($first6, 'Error:', 6))
-	{
-		$displayJavascriptAlert = displayJavascriptAlert(fread($fd, 1024));
-		fclose($fd);
-		unlink($file);
-		die($displayJavascriptAlert);
-	}
-	fclose($fd);
-	if (!Tools::ZipExtract($file, _PS_MODULE_DIR_))
-	{
-		unlink($file);
-		die(displayJavascriptAlert('Cannot unzip file'));
-	}
-	unlink($file);
-	die(displayJavascriptAlert('Module copied to disk'));
-}
-
 if (Tools::isSubmit('ajaxReferrers'))
 {
 	require(_PS_CONTROLLER_DIR_.'admin/AdminReferrersController.php');
@@ -101,39 +68,6 @@ if (Tools::isSubmit('ajaxProductPackItems'))
 	die('['.implode(',', $jsonArray).']');
 }
 
-if (Tools::isSubmit('ajaxStates') AND Tools::isSubmit('id_country'))
-{
-	$states = Db::getInstance()->executeS('
-	SELECT s.id_state, s.name
-	FROM '._DB_PREFIX_.'state s
-	LEFT JOIN '._DB_PREFIX_.'country c ON (s.`id_country` = c.`id_country`)
-	WHERE s.id_country = '.(int)(Tools::getValue('id_country')).' AND s.active = 1 AND c.`contains_states` = 1
-	ORDER BY s.`name` ASC');
-
-	if (is_array($states) AND !empty($states))
-	{
-		$list = '';
-		if (Tools::getValue('no_empty') != true)
-		{
-			$empty_value = (Tools::isSubmit('empty_value')) ? Tools::getValue('empty_value') : '----------';
-			$list = '<option value="0">'.Tools::htmlentitiesUTF8($empty_value).'</option>'."\n";
-		}
-
-		foreach ($states AS $state)
-			$list .= '<option value="'.(int)($state['id_state']).'"'.((isset($_GET['id_state']) AND $_GET['id_state'] == $state['id_state']) ? ' selected="selected"' : '').'>'.$state['name'].'</option>'."\n";
-	}
-	else
-		$list = 'false';
-
-	die($list);
-}
-
-if (Tools::getValue('form_language_id'))
-{
-	if (!($context->cookie->employee_form_lang = (int)(Tools::getValue('form_language_id'))))
-		die ('Error while updating cookie.');
-	die ('Form language updated.');
-}
 
 if (Tools::isSubmit('submitTrackClickOnHelp'))
 {
@@ -144,15 +78,6 @@ if (Tools::isSubmit('submitTrackClickOnHelp'))
         HelpAccess::trackClick($label, $version);
 }
 
-if (Tools::isSubmit('toggleScreencast'))
-{
-	if (Validate::isLoadedObject($context->employee))
-	{
-		$context->employee->bo_show_screencast = !$context->employee->bo_show_screencast;
-		$context->employee->update();
-	}
-}
-
 if (Tools::isSubmit('getChildrenCategories') && Tools::isSubmit('id_category_parent'))
 {
 	$children_categories = Category::getChildrenWithNbSelectedSubCat(Tools::getValue('id_category_parent'), Tools::getValue('selectedCat'), Context::getContext()->language->id, null, Tools::getValue('use_shop_context'));
@@ -200,17 +125,6 @@ if (Tools::isSubmit('getParentCategoriesId') && $id_category = Tools::getValue('
 	die(Tools::jsonEncode($output));
 }
 
-/* Update attribute */
-if (Tools::isSubmit('ajaxUpdateTaxRule'))
-{
-	$id_tax_rule = Tools::getValue('id_tax_rule');
-	$tax_rules = new TaxRule((int)$id_tax_rule);
-	$output = array();
-	foreach ($tax_rules as $key => $result)
-		$output[$key] = $result;
-	die(Tools::jsonEncode($output));
-}
-
 if (Tools::isSubmit('getZones'))
 {
 	$zones = Zone::getZones();
@@ -223,8 +137,3 @@ if (Tools::isSubmit('getZones'))
 	$array = array('hasError' => false, 'errors' => '', 'data' => $html);
 	die(Tools::jsonEncode($html));
 }
-
-function displayJavascriptAlert($s)
-{
-	echo '<script type="text/javascript">alert(\''.addslashes($s).'\');</script>';
-}
diff --git a/admin-dev/themes/default/template/controllers/tax_rules/helpers/form/form.tpl b/admin-dev/themes/default/template/controllers/tax_rules/helpers/form/form.tpl
index 2d5db9490..fd3c1f170 100644
--- a/admin-dev/themes/default/template/controllers/tax_rules/helpers/form/form.tpl
+++ b/admin-dev/themes/default/template/controllers/tax_rules/helpers/form/form.tpl
@@ -60,9 +60,9 @@
 			$("#states-label").hide();
 		} else {
 			$.ajax({
-				url: "ajax.php",
+				url: "index.php",
 				cache: false,
-				data: "ajaxStates=1&id_country="+id_country+"&id_state="+id_state+"&empty_value={l s='All'}",
+				data: "ajax=1&tab=AdminTaxRulesGroup&token={getAdminToken tab='AdminTaxRulesGroup'}&action=states&id_country="+id_country+"&id_state="+id_state+"&empty_value={l s='All'}",
 				success: function(html){
 					if (html == "false")
 					{
@@ -88,10 +88,10 @@
 	{
 		$.ajax({
 			type: 'POST',
-			url: 'ajax.php',
+			url: 'index.php',
 			async: true,
 			dataType: 'json',
-			data: 'ajaxStates=1&ajaxUpdateTaxRule=1&id_tax_rule='+id_tax_rule,
+			data: 'ajax=1&tab=AdminTaxRulesGroup&token={getAdminToken tab='AdminTaxRulesGroup'}&ajaxStates=1&action=updateTaxRule&id_tax_rule='+id_tax_rule,
 			success: function(data){
 				$('#tax_rule_form').show();
 				$('#id_tax_rule').val(data.id);
diff --git a/admin-dev/themes/default/template/helpers/form/form.tpl b/admin-dev/themes/default/template/helpers/form/form.tpl
index 694486e03..84424ff6f 100644
--- a/admin-dev/themes/default/template/helpers/form/form.tpl
+++ b/admin-dev/themes/default/template/helpers/form/form.tpl
@@ -432,7 +432,8 @@
 			};
 		{/foreach}
 		// we need allowEmployeeFormLang var in ajax request
-		allowEmployeeFormLang = {$allowEmployeeFormLang};
+		allowEmployeeFormLang = {$allowEmployeeFormLang|intval};
+		employee_token = '{getAdminToken tab='AdminEmployees'}';
 		displayFlags(languages, id_language, allowEmployeeFormLang);
 
 		$(document).ready(function() {
diff --git a/controllers/admin/AdminEmployeesController.php b/controllers/admin/AdminEmployeesController.php
index 3d69d1a84..945a95ba0 100644
--- a/controllers/admin/AdminEmployeesController.php
+++ b/controllers/admin/AdminEmployeesController.php
@@ -472,7 +472,15 @@ class AdminEmployeesControllerCore extends AdminController
 
 		return $res;
 	}
-
+	
+	protected function ajaxProcessFormLanguage()
+	{
+		$this->context->cookie->employee_form_lang = (int)Tools::getValue('form_language_id');
+		if (!$this->context->cookie->write())
+			die ('Error while updating cookie.');
+		die ('Form language updated.');
+	}
+	
 	public function ajaxProcessGetTabByIdProfile()
 	{
 		$id_profile = Tools::getValue('id_profile');
diff --git a/js/admin.js b/js/admin.js
index 4e0ffadfd..7904d724b 100644
--- a/js/admin.js
+++ b/js/admin.js
@@ -183,10 +183,15 @@ function changeFormLanguage(id_language_new, iso_code, employee_cookie)
 
 	// For multishop checkboxes
 	$('.multishop_lang_'+id_language_new).show().siblings('div[class^=\'multishop_lang_\']').hide();
-
 	$('.language_flags').hide();
 	if (employee_cookie)
-		$.post("ajax.php", { form_language_id: id_language_new });
+		$.post("index.php", {
+			action: 'formLanguage', 
+			tab: 'AdminEmployees',
+			ajax: 1,
+			token: employee_token,
+			form_language_id: id_language_new 
+		});
 	id_language = id_language_new;
 
 	updateCurrentText();