diff --git a/main/gradebook/gradebook_flatview.php b/main/gradebook/gradebook_flatview.php
index 13775af9e0..f628a653dd 100755
--- a/main/gradebook/gradebook_flatview.php
+++ b/main/gradebook/gradebook_flatview.php
@@ -1,95 +1,77 @@
 <?php // $Id: $
-/*
-==============================================================================
-	Dokeos - elearning and course management software
-
-	Copyright (c) 2009 Dokeos Latinoamerica SAC
-	Copyright (c) 2006 Dokeos SPRL
-	Copyright (c) 2006 Ghent University (UGent)
-	Copyright (c) various contributors
-
-	For a full list of contributors, see "credits.txt".
-	The full license can be read in "license.txt".
-
-	This program is free software; you can redistribute it and/or
-	modify it under the terms of the GNU General Public License
-	as published by the Free Software Foundation; either version 2
-	of the License, or (at your option) any later version.
-
-	See the GNU General Public License for more details.
-
-	Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
-	Mail: info@dokeos.com
-==============================================================================
-*/
-$language_file= 'gradebook';
+/* For licensing terms, see /license.txt */
+
+$language_file = 'gradebook';
 //$cidReset= true;
-require_once ('../inc/global.inc.php');
-require_once ('lib/be.inc.php');
-require_once ('lib/gradebook_functions.inc.php');
-require_once ('lib/fe/dataform.class.php');
-require_once ('lib/fe/userform.class.php');
-require_once ('lib/flatview_data_generator.class.php');
-require_once ('lib/fe/flatviewtable.class.php');
-require_once ('lib/fe/displaygradebook.php');
-require_once ('lib/fe/exportgradebook.php');
-require_once (api_get_path(LIBRARY_PATH).'ezpdf/class.ezpdf.php');
-require_once ('lib/scoredisplay.class.php');
+
+require_once '../inc/global.inc.php';
+require_once 'lib/be.inc.php';
+require_once 'lib/gradebook_functions.inc.php';
+require_once 'lib/fe/dataform.class.php';
+require_once 'lib/fe/userform.class.php';
+require_once 'lib/flatview_data_generator.class.php';
+require_once 'lib/fe/flatviewtable.class.php';
+require_once 'lib/fe/displaygradebook.php';
+require_once 'lib/fe/exportgradebook.php';
+require_once api_get_path(LIBRARY_PATH).'ezpdf/class.ezpdf.php';
+require_once 'lib/scoredisplay.class.php';
+
 api_block_anonymous_users();
 block_students();
 
 if (isset ($_POST['submit']) && isset ($_POST['keyword'])) {
 	header('Location: ' . api_get_self() . '?selectcat=' . Security::remove_XSS($_GET['selectcat'])
-										   . '&search='.Security::remove_XSS($_POST['keyword']));
+										   . '&search=' . Security::remove_XSS($_POST['keyword']));
 	exit;
 }
 
 $htmlHeadXtra[] = '<script src="../inc/lib/javascript/jquery.js" type="text/javascript" language="javascript"></script>'; //jQuery
 
-$interbreadcrumb[]= array (
+$interbreadcrumb[] = array (
 	'url' => $_SESSION['gradebook_dest'],
-	'name' => get_lang('Gradebook'
-));
+	'name' => get_lang('Gradebook')
+);
 
-$showeval= (isset ($_POST['showeval']) ? '1' : '0');
-$showlink= (isset ($_POST['showlink']) ? '1' : '0');
+$showeval = isset($_POST['showeval']) ? '1' : '0';
+$showlink = isset($_POST['showlink']) ? '1' : '0';
 if (($showlink == '0') && ($showeval == '0')) {
-	$showlink= '1';
-	$showeval= '1';
+	$showlink = '1';
+	$showeval = '1';
 }
-$cat= Category :: load($_REQUEST['selectcat']);
+
+$cat = Category::load($_REQUEST['selectcat']);
 
 if (isset($_GET['userid'])) {
-	$userid=Security::remove_XSS($_GET['userid']);
+	$userid = Security::remove_XSS($_GET['userid']);
 } else {
-	$userid='';
+	$userid = '';
 }
 
 if ($showeval) {
-	$alleval= $cat[0]->get_evaluations($userid, true);
+	$alleval = $cat[0]->get_evaluations($userid, true);
 } else {
-	$alleval=null;
+	$alleval = null;
 }
 
 if ($showlink) {
-	$alllinks= $cat[0]->get_links($userid, true);
+	$alllinks = $cat[0]->get_links($userid, true);
 } else {
-	$alllinks=null;
+	$alllinks = null;
 }
 
-
-
-if (isset ($export_flatview_form) && (!$file_type == 'pdf')) {
-	Display :: display_normal_message($export_flatview_form->toHtml(),false);
+if (isset($export_flatview_form) && (!$file_type == 'pdf')) {
+	Display :: display_normal_message($export_flatview_form->toHtml(), false);
 }
+
 if (isset($_GET['selectcat'])) {
-	$category_id=Security::remove_XSS($_GET['selectcat']);
+	$category_id = Security::remove_XSS($_GET['selectcat']);
 } else {
-	$category_id='';
+	$category_id = '';
 }
 
-$simple_search_form= new UserForm(UserForm :: TYPE_SIMPLE_SEARCH, null, 'simple_search_form', null, api_get_self() . '?selectcat=' .$category_id);
-$values= $simple_search_form->exportValues();
+$simple_search_form = new UserForm(UserForm :: TYPE_SIMPLE_SEARCH, null, 'simple_search_form', null, api_get_self() . '?selectcat=' . $category_id);
+$values = $simple_search_form->exportValues();
+
 $keyword = '';
 if (isset($_GET['search']) && !empty($_GET['search'])) {
 	$keyword = Security::remove_XSS($_GET['search']);
@@ -98,28 +80,28 @@ if ($simple_search_form->validate() && (empty($keyword))) {
 	$keyword = $values['keyword'];
 }
 
-
 if (!empty($keyword)) {
-	$users= find_students($keyword);
+	$users = find_students($keyword);
 } else {
 	if (isset($alleval) && isset($alllinks)) {
-		$users= get_all_users($alleval, $alllinks);
-	}else {
-		$users=null;
+		$users = get_all_users($alleval, $alllinks);
+	} else {
+		$users = null;
 	}
 }
+
 if (isset ($_GET['exportpdf']))	{
-	$interbreadcrumb[]= array (
-	'url' => api_get_self().'?selectcat=' . Security::remove_XSS($_GET['selectcat']),
-	'name' => get_lang('FlatView')
+	$interbreadcrumb[] = array (
+		'url' => api_get_self().'?selectcat=' . Security::remove_XSS($_GET['selectcat']),
+		'name' => get_lang('FlatView')
 	);
-	$export_pdf_form= new DataForm(DataForm :: TYPE_EXPORT_PDF, 'export_pdf_form', null, api_get_self() . '?exportpdf=&offset='.$_GET['offset'].'&selectcat=' . $_GET['selectcat'],'_blank');
+	$export_pdf_form = new DataForm(DataForm :: TYPE_EXPORT_PDF, 'export_pdf_form', null, api_get_self() . '?exportpdf=&offset='.$_GET['offset'].'&selectcat=' . $_GET['selectcat'],'_blank');
 	if (!$export_pdf_form->validate()) {
 		Display :: display_header(get_lang('ExportPDF'));
 	}
 	if ($export_pdf_form->validate()) {
-		$printable_data = get_printable_data ($users,$alleval, $alllinks);
-		$export= $export_pdf_form->exportValues();
+		$printable_data = get_printable_data($users, $alleval, $alllinks);
+		$export = $export_pdf_form->exportValues();
 		$format = $export['orientation'];
 		$pdf =& new Cezpdf('a4',$format); //format is 'portrait' or 'landscape'
 		$clear_printable_data=array();
@@ -146,24 +128,24 @@ if (isset ($_GET['print']))	{
 	exit;
 }
 
-if(!empty($_POST['export_report']) && $_POST['export_report'] == 'export_report'){
-	if(api_is_platform_admin() || api_is_course_admin() || api_is_course_coach())	{
+if (!empty($_POST['export_report']) && $_POST['export_report'] == 'export_report') {
+	if (api_is_platform_admin() || api_is_course_admin() || api_is_course_coach()) {
 		$user_id = null;
 
-		if(empty($_SESSION['export_user_fields'])) {
+		if (empty($_SESSION['export_user_fields'])) {
 			$_SESSION['export_user_fields'] = false;
 		}
-		if(!api_is_allowed_to_edit(false,false) and !api_is_course_tutor()) {
+		if (!api_is_allowed_to_edit(false, false) and !api_is_course_tutor()) {
 			$user_id = api_get_user_id();
 		}
 
-		require_once('gradebook_result.class.php');
-		$printable_data = get_printable_data ($users,$alleval, $alllinks);
+		require_once 'gradebook_result.class.php';
+		$printable_data = get_printable_data($users, $alleval, $alllinks);
 
 		switch($_POST['export_format']) {
 			case 'xls':
 				$export = new GradeBookResult();
-				$export->exportCompleteReportXLS($printable_data );
+				$export->exportCompleteReportXLS($printable_data);
 				exit;
 				break;
 			case 'csv':
@@ -178,13 +160,13 @@ if(!empty($_POST['export_report']) && $_POST['export_report'] == 'export_report'
 	}
 }
 
-$addparams= array ('selectcat' => $cat[0]->get_id());
+$addparams = array ('selectcat' => $cat[0]->get_id());
 if (isset($_GET['search'])) {
 	$addparams['search'] = $keyword;
 }
-$offset = (isset($_GET['offset'])?$_GET['offset']:'0');
 
-$flatviewtable= new FlatViewTable($cat[0], $users, $alleval, $alllinks, true, $offset, $addparams);
+$offset = isset($_GET['offset']) ? $_GET['offset'] : '0';
+$flatviewtable = new FlatViewTable($cat[0], $users, $alleval, $alllinks, true, $offset, $addparams);
 
 if (isset($_GET['exportpdf'])) {
 	echo '<div class="normal-message">';
@@ -193,28 +175,30 @@ if (isset($_GET['exportpdf'])) {
 } else {
 	Display :: display_header(get_lang('FlatView'));
 }
-if (isset($_GET['isStudentView']) && $_GET['isStudentView']=='false') {
-		DisplayGradebook :: display_header_reduce_flatview($cat[0], $showeval, $showlink, $simple_search_form);
-		$flatviewtable->display();
-} elseif (isset($_GET['selectcat']) && ($_SESSION['studentview']=='teacherview')) {
-		DisplayGradebook :: display_header_reduce_flatview($cat[0], $showeval, $showlink, $simple_search_form);
-		/*echo '<div id="contentLoading" class="contentLoading">';
-		echo Display::display_icon('loader.gif');
-		echo '</div>';*/
-
-		// main graph
-		//@todo load images with jquery
-		echo '<div id="contentArea" style="text-align:center;" >';
-			$image_file = $flatviewtable->display_graph();
-			$my_info_path_img=array();
-			$my_info_path_img=explode('/',$image_file);
-			if (strlen($my_info_path_img[5])==32) {
-				echo '<img  src="'.$image_file.'">';
-			}
-			$flatviewtable->display();
-			$flatviewtable->display_graph_by_resource();
-		echo '</div>';
+
+if (isset($_GET['isStudentView']) && $_GET['isStudentView'] == 'false') {
+	DisplayGradebook :: display_header_reduce_flatview($cat[0], $showeval, $showlink, $simple_search_form);
+	$flatviewtable->display();
+} elseif (isset($_GET['selectcat']) && ($_SESSION['studentview'] == 'teacherview')) {
+	DisplayGradebook :: display_header_reduce_flatview($cat[0], $showeval, $showlink, $simple_search_form);
+	/*echo '<div id="contentLoading" class="contentLoading">';
+	echo Display::display_icon('loader.gif');
+	echo '</div>';*/
+
+	// main graph
+	//@todo load images with jquery
+	echo '<div id="contentArea" style="text-align:center;" >';
+	$image_file = $flatviewtable->display_graph();
+	$my_info_path_img = array();
+	$my_info_path_img = explode('/', $image_file);
+	if (strlen($my_info_path_img[5]) == 32) {
+		echo '<img  src="'.$image_file.'">';
+	}
+	$flatviewtable->display();
+	$flatviewtable->display_graph_by_resource();
+	echo '</div>';
 }
+
 Display :: display_footer();
 
 function get_printable_data($users,$alleval, $alllinks) {