diff --git a/main/inc/lib/exercise_show_functions.lib.php b/main/inc/lib/exercise_show_functions.lib.php
new file mode 100644
index 0000000000..261f362829
--- /dev/null
+++ b/main/inc/lib/exercise_show_functions.lib.php
@@ -0,0 +1,341 @@
+<?php // $Id: exercise_show_functions.lib.php 22205 2010-02-11 15:00:00Z aportugal $
+/**
+==============================================================================
+* EVENTS LIBRARY
+*
+* This is the events library for Chamilo.
+* Functions of this library are used to record informations when some kind
+* of event occur. Each event has his own types of informations then each event
+* use its own function.
+*
+* @package chamilo.library
+* @todo convert queries to use Database API
+==============================================================================
+*/
+
+$TBL_EXERCICE_QUESTION 	= Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
+$TBL_EXERCICES         	= Database::get_course_table(TABLE_QUIZ_TEST);
+$TBL_QUESTIONS         	= Database::get_course_table(TABLE_QUIZ_QUESTION);
+$TBL_REPONSES          	= Database::get_course_table(TABLE_QUIZ_ANSWER);
+$main_user_table 		= Database :: get_main_table(TABLE_MAIN_USER);
+$main_course_user_table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
+$TBL_TRACK_EXERCICES	= Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
+$TBL_TRACK_ATTEMPT		= Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
+
+class ExerciseShowFunctions {
+
+	/**
+	 * Shows the answer to a fill-in-the-blanks question, as HTML
+	 * @param string    Answer text
+	 * @param int       Exercise ID
+	 * @param int       Question ID
+	 * @return void
+	 */
+	
+	function display_fill_in_blanks_answer($answer,$id,$questionId)
+	{	global $feedback_type;
+		?>
+			<tr>
+			<td>
+				<?php echo nl2br(Security::remove_XSS($answer,COURSEMANAGERLOWSECURITY)); ?>
+			</td>
+	
+			<?php
+			if(!api_is_allowed_to_edit(null,true) && $feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) {?>
+				<td>
+				<?php
+				$comm = ExerciseShowFunctions::get_comments($id,$questionId);
+				?>
+				</td>
+			<?php } ?>
+	
+				</tr>
+		<?php
+	}
+
+	/**
+	 * Shows the answer to a free-answer question, as HTML
+	 * @param string    Answer text
+	 * @param int       Exercise ID
+	 * @param int       Question ID
+	 * @return void
+	 */
+	function display_free_answer($answer,$id,$questionId) {
+		global $feedback_type;
+		?>
+			<tr>
+			<td>
+				<?php if (!empty($answer)) {echo nl2br(Security::remove_XSS($answer,COURSEMANAGERLOWSECURITY));} ?>
+			</td>
+	
+			<?php if(!api_is_allowed_to_edit(null,true) && $feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) {?>
+	        <td>
+	        <?php
+	        $comm = ExerciseShowFunctions::get_comments($id,$questionId);
+	        ?>
+	        </td>
+	    	<?php }?>
+	
+	
+	    </tr>
+	    <?php
+	}
+
+	/**
+	 * Displays the answer to a hotspot question
+	 *
+	 * @param int $answerId
+	 * @param string $answer
+	 * @param string $studentChoice
+	 * @param string $answerComment
+	 */
+	function display_hotspot_answer($answerId, $answer, $studentChoice, $answerComment) {
+		global $feedback_type;
+		$hotspot_colors = array("", // $i starts from 1 on next loop (ugly fix)
+	            						"#4271B5",
+										"#FE8E16",
+										"#3B3B3B",
+										"#BCD631",
+										"#D63173",
+										"#D7D7D7",
+										"#90AFDD",
+										"#AF8640",
+										"#4F9242",
+										"#F4EB24",
+										"#ED2024",
+										"#45C7F0",
+										"#F7BDE2");
+		?>
+		<tr>
+			<td width="100px" valign="top" align="left">
+				<div style="width:100%;">
+					<div style="height:11px; width:11px; background-color:<?php echo $hotspot_colors[$answerId]; ?>; display:inline; float:left; margin-top:3px;"></div>
+					<div style="float:left; padding-left:5px;">
+					<?php echo $answerId; ?>
+					</div>
+					<div><?php echo '&nbsp;'.$answer ?></div>
+				</div>
+			</td>
+			<td width="50px" style="padding-right:15px" valign="top" align="left">
+				<?php
+				$my_choice = ($studentChoice)?get_lang('Correct'):get_lang('Fault'); echo $my_choice; ?>
+			</td>
+	
+	
+			<?php if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) { ?>
+			<td valign="top" align="left" >
+				<?php
+				$answerComment=api_parse_tex($answerComment);
+				if($studentChoice) {
+					echo '<span style="font-weight: bold; color: #008000;">'.nl2br(make_clickable($answerComment)).'</span>';
+				} else {
+					echo '<span style="font-weight: bold; color: #FF0000;">'.nl2br(make_clickable($answerComment)).'</span>';
+				}
+				?>
+			</td>
+			<?php } else { ?>
+				<td>&nbsp;</td>
+			<?php } ?>
+	
+		</tr>
+		<?php
+	}
+
+
+	/**
+	 * Display the answers to a multiple choice question
+	 *
+	 * @param integer Answer type
+	 * @param integer Student choice
+	 * @param string  Textual answer
+	 * @param string  Comment on answer
+	 * @param string  Correct answer comment
+	 * @param integer Exercise ID
+	 * @param integer Question ID
+	 * @param boolean Whether to show the answer comment or not
+	 * @return void
+	 */
+	function display_unique_or_multiple_answer($answerType, $studentChoice, $answer, $answerComment, $answerCorrect, $id, $questionId, $ans)
+	{
+		global $feedback_type;
+		?>
+		<tr>
+		<td width="5%" align="center">
+			<img src="../img/<?php echo ($answerType == UNIQUE_ANSWER)?'radio':'checkbox'; echo $studentChoice?'_on':'_off'; ?>.gif"
+			border="0" alt="" />
+		</td>
+		<td width="5%" align="center">
+			<img src="../img/<?php echo ($answerType == UNIQUE_ANSWER)?'radio':'checkbox'; echo $answerCorrect?'_on':'_off'; ?>.gif"
+			border="0" alt=" " />
+		</td>
+		<td width="40%" style="border-bottom: 1px solid #4171B5;">
+			<?php
+			$answer=api_parse_tex($answer);
+			echo $answer;
+			?>
+		</td>
+	
+		<?php if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) { ?>
+		<td width="20%" style="border-bottom: 1px solid #4171B5;">
+			<?php
+			$answerComment=api_parse_tex($answerComment);
+			if($studentChoice)
+			{
+				if(!$answerCorrect)
+				{
+					echo '<span style="font-weight: bold; color: #FF0000;">'.nl2br(make_clickable($answerComment)).'</span>';
+				}
+				else{
+					echo '<span style="font-weight: bold; color: #008000;">'.nl2br(make_clickable($answerComment)).'</span>';
+				}
+			}
+			else
+			{
+				echo '&nbsp;';
+			}
+			?>
+		</td>
+			<?php
+		    if ($ans==1) {
+		        $comm = ExerciseShowFunctions::get_comments($id,$questionId);
+			}
+		    ?>
+		 <?php } else { ?>
+			<td>&nbsp;</td>
+		<?php } ?>
+		</tr>
+		<?php
+	}
+
+	/**
+	 * This function gets the comments of an exercise
+	 *
+	 * @param int $id
+	 * @param int $question_id
+	 * @return str the comment
+	 */
+	function get_comments($id,$question_id)
+	{
+		global $TBL_TRACK_ATTEMPT;
+		$sql = "SELECT teacher_comment FROM ".$TBL_TRACK_ATTEMPT." where exe_id='".Database::escape_string($id)."' and question_id = '".Database::escape_string($question_id)."' ORDER by question_id";
+		$sqlres = Database::query($sql, __FILE__, __LINE__);
+		$comm = Database::result($sqlres,0,"teacher_comment");
+		return $comm;
+	}
+
+	function send_notification($arrques, $arrans, $to) {
+		global $courseName, $exerciseTitle, $url_email;
+	    require_once api_get_path(LIBRARY_PATH).'usermanager.lib.php';
+		$user_info = UserManager::get_user_info_by_id(api_get_user_id());
+	
+		if (api_get_course_setting('email_alert_manager_on_new_quiz') != 1 ) {
+			return '';
+		}
+	
+		$mycharset = api_get_system_encoding();
+	    $msg = '<html><head>
+	            <link rel="stylesheet" href="'.api_get_path(WEB_CODE_PATH).'css/'.api_get_setting('stylesheets').'/default.css" type="text/css">
+	            <meta content="text/html; charset='.$mycharset.'" http-equiv="content-type"></head>';
+		if(count($arrques)>0) {
+		    $msg .= '<body>
+		    <p>'.get_lang('OpenQuestionsAttempted').' :
+		    </p>
+		    <p>'.get_lang('AttemptDetails').' : <br />
+		    </p>
+		    <table width="730" height="136" border="0" cellpadding="3" cellspacing="3">
+		                                            <tr>
+		        <td width="229" valign="top"><h2>&nbsp;&nbsp;'.get_lang('CourseName').'</h2></td>
+		        <td width="469" valign="top"><h2>#course#</h2></td>
+		      </tr>
+		      <tr>
+		        <td width="229" valign="top" class="outerframe">&nbsp;&nbsp;'.get_lang('TestAttempted').'</span></td>
+		        <td width="469" valign="top" class="outerframe">#exercise#</td>
+		      </tr>
+		      <tr>
+		        <td valign="top">&nbsp;&nbsp;<span class="style10">'.get_lang('StudentName').'</span></td>
+		        <td valign="top" >#firstName# #lastName#</td>
+		      </tr>
+		      <tr>
+		        <td valign="top" >&nbsp;&nbsp;'.get_lang('StudentEmail').' </td>
+		        <td valign="top"> #mail#</td>
+		    </tr></table>
+		    <p><br />'.get_lang('OpenQuestionsAttemptedAre').' :</p>
+		     <table width="730" height="136" border="0" cellpadding="3" cellspacing="3">';
+	
+		    for($i=0;$i<sizeof($arrques);$i++) {
+		              $msg.='
+		                    <tr>
+		                <td width="220" valign="top" bgcolor="#E5EDF8">&nbsp;&nbsp;<span class="style10">'.get_lang('Question').'</span></td>
+		                <td width="473" valign="top" bgcolor="#F3F3F3"><span class="style16"> #questionName#</span></td>
+		                    </tr>
+		                    <tr>
+		                <td width="220" valign="top" bgcolor="#E5EDF8">&nbsp;&nbsp;<span class="style10">'.get_lang('Answer').' </span></td>
+		                <td valign="top" bgcolor="#F3F3F3"><span class="style16"> #answer#</span></td>
+		                    </tr>';
+	
+		                    $msg1= str_replace("#exercise#",$exerciseTitle,$msg);
+		                    $msg= str_replace("#firstName#",$user_info['firstname'],$msg1);
+		                    $msg1= str_replace("#lastName#",$user_info['lastname'],$msg);
+		                    $msg= str_replace("#mail#",$user_info['email'],$msg1);
+		                    $msg1= str_replace("#questionName#",$arrques[$i],$msg);
+		                    $msg= str_replace("#answer#",$arrans[$i],$msg1);
+		                    $msg1= str_replace("#i#",$i,$msg);
+		                    $msg= str_replace("#course#",$courseName,$msg1);
+		    }
+		    $msg.='</table><br>
+		                    <span class="style16">'.get_lang('ClickToCommentAndGiveFeedback').',<br />
+		                    <a href="#url#">#url#</a></span></body></html>';
+	
+		    $msg1= str_replace("#url#",$url_email,$msg);
+		    $mail_content = $msg1;
+	
+		    $subject = get_lang('OpenQuestionsAttempted');
+	
+	
+		    $sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
+		    $email_admin = api_get_setting('emailAdministrator');
+		    $result = @api_mail_html('', $to, $subject, $mail_content, $sender_name, $email_admin, array('charset'=>$mycharset));
+		} else {
+	
+			$msg .= '<body>
+			<p>'.get_lang('ExerciseAttempted').' <br />
+		    </p>
+			<table width="730" height="136" border="0" cellpadding="3" cellspacing="3">
+				<tr>
+			    <td width="229" valign="top"><h2>&nbsp;&nbsp;'.get_lang('CourseName').'</h2></td>
+			    <td width="469" valign="top"><h2>#course#</h2></td>
+			  </tr>
+			  <tr>
+			    <td width="229" valign="top" class="outerframe">&nbsp;&nbsp;'.get_lang('TestAttempted').'</span></td>
+			    <td width="469" valign="top" class="outerframe">#exercise#</td>
+			  </tr>
+			  <tr>
+			    <td valign="top">&nbsp;&nbsp;<span class="style10">'.get_lang('StudentName').'</span></td>
+			    '.(api_is_western_name_order() ? '<td valign="top" >#firstName# #lastName#</td>' : '<td valign="top" >#lastName# #firstName#</td>').'
+			  </tr>
+			  <tr>
+			    <td valign="top" >&nbsp;&nbsp;'.get_lang('StudentEmail').' </td>
+			    <td valign="top"> #mail#</td>
+			</tr></table>';
+	
+			$msg= str_replace("#exercise#",$exerciseTitle,$msg);
+			$msg= str_replace("#firstName#",$user_info['firstname'],$msg);
+			$msg= str_replace("#lastName#",$user_info['lastname'],$msg);
+			$msg= str_replace("#mail#",$user_info['email'],$msg);
+			$msg= str_replace("#course#",$courseName,$msg);
+	
+			$msg.='<br />
+		 			<span class="style16">'.get_lang('ClickToCommentAndGiveFeedback').',<br />
+					<a href="#url#">#url#</a></span></body></html>';
+	
+			$msg= str_replace("#url#",$url_email,$msg);
+			$mail_content = $msg;
+	
+			$sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
+			$email_admin = api_get_setting('emailAdministrator');
+	
+			$subject = get_lang('ExerciseAttempted');
+			$result = @api_mail_html('', $to, $subject, $mail_content, $sender_name, $email_admin, array('charset'=>$mycharset));
+		}
+	}
+}
\ No newline at end of file