diff --git a/main/exercice/exercise_reminder.php b/main/exercice/exercise_reminder.php
index c9f460eb53..a40487390a 100644
--- a/main/exercice/exercise_reminder.php
+++ b/main/exercice/exercise_reminder.php
@@ -1,7 +1,7 @@
 <?php
 /* For licensing terms, see /license.txt */
-/** 
-*	Exercise reminder overview 
+/**
+*	Exercise reminder overview
 *	Then it shows the results on the screen.
 *	@package chamilo.exercise
 
@@ -47,11 +47,11 @@ if ( empty ($exerciseId)) {  $exerciseId = intval($_REQUEST['exerciseId']);}
 
 if ( empty ($objExercise)) { $objExercise = $_SESSION['objExercise'];}
 
-if (!$objExercise) {	
+if (!$objExercise) {
 	//Redirect to the exercise overview
 	//Check if the exe_id exists
 	header("Location: overview.php?exerciseId=".$exerciseId);
-	exit;	
+	exit;
 }
 
 $time_control = false;
@@ -69,7 +69,7 @@ if ($time_control) {
     $htmlHeadXtra[] = api_get_js('epiclock/javascript/jquery.dateformat.min.js');
     $htmlHeadXtra[] = api_get_js('epiclock/javascript/jquery.epiclock.min.js');
     $htmlHeadXtra[] = api_get_js('epiclock/renderers/minute/epiclock.minute.js');
-	$htmlHeadXtra[] = $objExercise->show_time_control_js($time_left);	
+	$htmlHeadXtra[] = $objExercise->show_time_control_js($time_left);
 }
 
 
@@ -107,48 +107,48 @@ if (api_is_course_admin() && $origin != 'learnpath') {
 echo Display::page_header(get_lang('QuestionsToReview'));
 
 if ($time_control) {
-    echo $objExercise->return_time_left_div();	
+    echo $objExercise->return_time_left_div();
 }
 
 echo Display::div('', array('id'=>'message'));
 
-echo '<script>		
-		lp_data = $.param({"learnpath_id": '.$learnpath_id.', "learnpath_item_id" : '.$learnpath_item_id.', "learnpath_item_view_id": '.$learnpath_item_view_id.'});    		
-      
+echo '<script>
+		lp_data = $.param({"learnpath_id": '.$learnpath_id.', "learnpath_item_id" : '.$learnpath_item_id.', "learnpath_item_view_id": '.$learnpath_item_view_id.'});
+
         function final_submit() {
-        	//Normal inputs   
+        	//Normal inputs
         	window.location = "exercise_result.php?origin='.$origin.'&exe_id='.$exe_id.'&" + lp_data;
 		}
-        
+
 		function review_questions() {
 			var is_checked = 1;
 			$("input[type=checkbox]").each(function () {
 			    if ($(this).attr("checked") == "checked") {
-			    	is_checked = 2; 
+			    	is_checked = 2;
 			    	return false;
 			    }
-			});			
-			
+			});
+
 			if (is_checked == 1) {
 				$("#message").addClass("warning-message");
 				$("#message").html("'.addslashes(get_lang('SelectAQuestionToReview')).'");
 			}
 			window.location = "exercise_submit.php?'.api_get_cidreq().'&exerciseId='.$objExercise->id.'&reminder=2&origin='.$origin.'&" + lp_data;
 		}
-		
+
 		function save_remind_item(obj, question_id) {
-			var action = "";			
+			var action = "";
 			if ($(obj).is(\':checked\')) {
 				action = "add";
 			} else {
 				action = "delete";
-			}			 
-			$.ajax({ 
+			}
+			$.ajax({
 				url: "'.api_get_path(WEB_AJAX_PATH).'exercise.ajax.php?a=add_question_to_reminder",
-				data: "question_id="+question_id+"&exe_id='.$exe_id.'&action="+action,                                 
-				success: function(return_value) {                        	
-				},                                 
-			});		
+				data: "question_id="+question_id+"&exe_id='.$exe_id.'&action="+action,
+				success: function(return_value) {
+				},
+			});
 		}
 </script>';
 
@@ -162,10 +162,10 @@ $exercise_result    = array();
 foreach ($attempt_list as $question_id => $options) {
 	//echo $question_id.'<br />';
 	foreach($options as $item) {
-			
+
 		$question_obj = Question::read($item['question_id']);
-		
-		switch($question_obj->type) { 
+
+		switch($question_obj->type) {
 			case FILL_IN_BLANKS:
 				$item['answer'] = $objExercise->fill_in_blank_answer_to_string($item['answer']);
 				break;
@@ -173,12 +173,12 @@ foreach ($attempt_list as $question_id => $options) {
 				//var_dump($item['answer']);
 				break;
 		}
-		
-		if ($item['answer'] != '0' && !empty($item['answer'])) {			
+
+		if ($item['answer'] != '0' && !empty($item['answer'])) {
     		$exercise_result[] = $question_id;
     		break;
 		}
-	}    
+	}
 }
 echo Display::label(get_lang('QuestionWithNoAnswer'), 'warning');
 echo '<div class="clear"></div><br />';
@@ -190,26 +190,26 @@ $counter = 0;
 foreach ($question_list as $questionId) {
     // destruction of the Question object
 	unset($objQuestionTmp);
-	
+
 	// creates a temporary Question object
 	$objQuestionTmp        = Question :: read($questionId);
 	// initialize question information
-		
+
 	$quesId         = $objQuestionTmp->selectId();
 	$check_id 		= 'remind_list['.$questionId.']';
-	$attributes     = array('id'=>$check_id, 'onclick'=>"save_remind_item(this, '$questionId');");	
-	
+	$attributes     = array('id'=>$check_id, 'onclick'=>"save_remind_item(this, '$questionId');");
+
 	if (in_array($questionId, $remind_list)) {
 	    $attributes['checked'] = 1;
 	}
 	$label_attributes = array();
 	$label_attributes['class'] = 'checkbox';
-	$label_attributes['for'] = $check_id;	
+	$label_attributes['for'] = $check_id;
     $label_attributes['class'] = "checkbox";
-	
+
 	$checkbox          = Display::input('checkbox', 'remind_list['.$questionId.']', '', $attributes);
 	$url               = 'exercise_submit.php?exerciseId='.$objExercise->id.'&num='.$counter.'&reminder=1';
-	
+
 	$counter++;
 	if ($objExercise->type == ONE_PER_PAGE) {
 	    $question_title = Display::url($counter.'. '.cut($objQuestionTmp->selectTitle(), 40), $url);
@@ -221,14 +221,14 @@ foreach ($question_list as $questionId) {
     if (!in_array($questionId, $exercise_result)) {
         $question_title = Display::label($question_title, 'warning');
     }
-	$question_title    = Display::tag('label', $checkbox.$question_title, $label_attributes);	
-	$table            .= Display::div($question_title, array('class'=>'exercise_reminder_item'));		
+	$question_title    = Display::tag('label', $checkbox.$question_title, $label_attributes);
+	$table            .= Display::div($question_title, array('class'=>'exercise_reminder_item'));
 } // end foreach() block that loops over all questions
 
 echo Display::div($table, array('class'=>'span10'));
 
-$exercise_actions = Display::url(get_lang('EndTest'), 'javascript://', array('onclick'=>'final_submit();', 'class'=>'btn btn-success'));
-$exercise_actions .=  '&nbsp;'.Display::url(get_lang('ReviewQuestions'), 'javascript://', array('onclick'=>'review_questions();','class'=>'btn'));
+$exercise_actions = Display::url(get_lang('EndTest'), 'javascript://', array('onclick'=>'final_submit();', 'class'=>'btn btn-warning'));
+$exercise_actions .=  '&nbsp;'.Display::url(get_lang('ReviewQuestions'), 'javascript://', array('onclick'=>'review_questions();','class'=>'btn btn-success'));
 
 echo Display::div('', array('class'=>'clear'));
 echo Display::div($exercise_actions, array('class'=>'form-actions'));