<?php // $Id: exercice_submit.php 18387 2009-02-09 22:05:17Z juliomontoya $

/*
==============================================================================
	Dokeos - elearning and course management software

	Copyright (c) 2004-2008 Dokeos SPRL
	Copyright (c) 2003 Ghent University (UGent)
	Copyright (c) 2001 Universite catholique de Louvain (UCL)
	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
==============================================================================
*/

/**
*	Exercise submission
* 	This script allows to run an exercise. According to the exercise type, questions
* 	can be on an unique page, or one per page with a Next button.
*
* 	One exercise may contain different types of answers (unique or multiple selection,
* 	matching, fill in blanks, free answer, hot-spot).
*
* 	Questions are selected randomly or not.
*
* 	When the user has answered all questions and clicks on the button "Ok",
* 	it goes to exercise_result.php
*
* 	Notice : This script is also used to show a question before modifying it by
* 	the administrator
*	@package dokeos.exercise
* 	@author Olivier Brouckaert
* 	@author Julio Montoya multiple fill in blank option added
* 	@version $Id: exercice_submit.php 18387 2009-02-09 22:05:17Z juliomontoya $
*/


include('exercise.class.php');
include('question.class.php');
include('answer.class.php');
include('exercise.lib.php');

// debug var. Set to 0 to hide all debug display. Set to 1 to display debug messages.
$debug = 0;
/*
// answer types
define('UNIQUE_ANSWER',		1);
define('MULTIPLE_ANSWER',	2);
define('FILL_IN_BLANKS',	3);
define('MATCHING',			4);
define('FREE_ANSWER', 		5);
define('HOT_SPOT', 			6);
define('HOT_SPOT_ORDER', 	7);
*/
// name of the language file that needs to be included
$language_file='exercice';

include_once('../inc/global.inc.php');
$this_section=SECTION_COURSES;

/* ------------	ACCESS RIGHTS ------------ */
// notice for unauthorized people.
api_protect_course_script(true);

include_once(api_get_path(LIBRARY_PATH).'text.lib.php');

$is_allowedToEdit=api_is_allowed_to_edit();

$_configuration['live_exercise_tracking'] = true;
$stat_table =  Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
$exercice_attemp_table =  Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);

$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);

// general parameters passed via POST/GET

if ( empty ( $origin ) ) {
    $origin = $_REQUEST['origin'];
}
if ( empty ( $learnpath_id ) ) {
    $learnpath_id       = Database::escape_string($_REQUEST['learnpath_id']);
}
if ( empty ( $learnpath_item_id ) ) {
    $learnpath_item_id  = Database::escape_string($_REQUEST['learnpath_item_id']);
}
if ( empty ( $formSent ) ) {
    $formSent = $_REQUEST['formSent'];
}
if ( empty ( $exerciseResult ) ) {
    $exerciseResult = $_REQUEST['exerciseResult'];
}

if ( empty ( $exerciseResultCoordinates ) ) {
    $exerciseResultCoordinates = $_REQUEST['exerciseResultCoordinates'];
}

if ( empty ( $exerciseType ) ) {
    $exerciseType = $_REQUEST['exerciseType'];
}
if ( empty ( $exerciseId ) ) {
    $exerciseId = intval($_REQUEST['exerciseId']);
}
if ( empty ( $choice ) ) {
    $choice = $_REQUEST['choice'];
}
if ( empty ( $questionNum ) ) {
    $questionNum    = Database::escape_string($_REQUEST['questionNum']);
}
if ( empty ( $nbrQuestions ) ) {
    $nbrQuestions   = Database::escape_string($_REQUEST['nbrQuestions']);
}
if ( empty ($buttonCancel) ) {
	$buttonCancel 	= $_REQUEST['buttonCancel'];
}
$error = '';
if (!isset($exerciseType)) {
$exe_start_date= date('Y-m-d H:i:s');
}
// if the user has clicked on the "Cancel" button
if($buttonCancel)
{
	// returns to the exercise list
	header("Location: exercice.php?origin=$origin&learnpath_id=$learnpath_id&learnpath_item_id=$learnpath_item_id");
	exit();
}

if ($origin=='builder') {
	/*******************************/
	/* Clears the exercise session */
	/*******************************/
	if(isset($_SESSION['objExercise']))		{ api_session_unregister('objExercise');	unset($objExercise); }
	if(isset($_SESSION['objQuestion']))		{ api_session_unregister('objQuestion');	unset($objQuestion); }
	if(isset($_SESSION['objAnswer']))		{ api_session_unregister('objAnswer');		unset($objAnswer);   }
	if(isset($_SESSION['questionList']))	{ api_session_unregister('questionList');	unset($questionList); }
	if(isset($_SESSION['newquestionList']))	{ api_session_unregister('newquestionList');	unset($newquestionList); }	
	if(isset($_SESSION['exerciseResult']))	{ api_session_unregister('exerciseResult');	unset($exerciseResult); }
	if(isset($_SESSION['exerciseResultCoordinates']))	{ api_session_unregister('exerciseResultCoordinates');	unset($exerciseResultCoordinates); }
}
$safe_lp_id = ($learnpath_id=='')?0:(int)$learnpath_id;
$safe_lp_item_id = ($learnpath_item_id=='')?0:(int)$learnpath_item_id;
$condition = ' WHERE ' .
		'exe_exo_id = '."'".$exerciseId."'".' AND ' .
		'exe_user_id = '."'".api_get_user_id()."'".' AND ' .
		'exe_cours_id = '."'".$_course['id']."'".' AND ' .
		'status = '."'incomplete'".' AND '.
		'orig_lp_id = '."'".$safe_lp_id."'".' AND '.
		'orig_lp_item_id = '."'".$safe_lp_item_id."'".' AND '.
		'session_id = '."'".(int)$_SESSION['id_session']."'";


$TBL_EXERCICES  = Database::get_course_table(TABLE_QUIZ_TEST);
$result=api_sql_query("SELECT type,feedback_type FROM $TBL_EXERCICES WHERE id=$exerciseId",__FILE__,__LINE__);
$exercise_row = Database::fetch_array($result);
$exerciseType = $exercise_row['type'];
$exerciseFeedbackType= $exercise_row['feedback_type'];

if ($exerciseType == 1) {
	$_SESSION['exercice_start_date'] = $exe_start_date;
}

if ($_configuration['live_exercise_tracking'] == true && $exerciseType == 2 && $exerciseFeedbackType!=1) {
	$query = 'SELECT * FROM '.$stat_table.$condition;			
	$result_select = api_sql_query($query,__FILE__,__LINE__);	
	if(Database::num_rows($result_select) > 0 ){
		$getIncomplete = Database::fetch_array($result_select);		
		$exe_id = $getIncomplete['exe_id'];		
		if ($_SERVER['REQUEST_METHOD']!='POST') {
			define('QUESTION_LIST_ALREADY_LOGGED',1);
			$recorded['questionList'] = explode(',',$getIncomplete['data_tracking']);			
			$query = 'SELECT * FROM '.$exercice_attemp_table.' WHERE exe_id = '.$getIncomplete['exe_id'].' ORDER BY tms ASC';			
			$result = api_sql_query($query,__FILE__,__LINE__);
			while ($row = Database::fetch_array($result)) {
				$recorded['exerciseResult'][$row['question_id']] = 1;
			}
			$exerciseResult = $_SESSION['exerciseResult'] = $recorded['exerciseResult'];
			$exerciseType = 2;
			$questionNum = count($recorded['exerciseResult']);
			$questionNum++;
			$questionList = $_SESSION['questionList'] = $recorded['questionList'];
		}
	} else {
		$table_recorded_not_exist = true;
	}
}

// if the user has submitted the form
if ($formSent) {
    if ($debug>0) {
    	echo str_repeat('&nbsp;',0).'$formSent was set'."<br />\n";
    }

    // initializing
    if (!is_array($exerciseResult)) {
        $exerciseResult=array();
        $exerciseResultCoordinates=array();
    }


    // if the user has answered at least one question
    if (is_array($choice)) {
        if ($debug>0) {
        	echo str_repeat('&nbsp;',0).'$choice is an array'."<br />\n";
        }

        if ($exerciseType == 1) {
            // $exerciseResult receives the content of the form.
            // Each choice of the student is stored into the array $choice
            $exerciseResult=$choice;

            if (isset($_POST['hotspot'])) {
            	$exerciseResultCoordinates = $_POST['hotspot'];
            }
        } else {
            // gets the question ID from $choice. It is the key of the array
            list($key)=array_keys($choice);

            // if the user didn't already answer this question
            if (!isset($exerciseResult[$key])) {
                // stores the user answer into the array
                $exerciseResult[$key]=$choice[$key];

                //saving each question
                if ($_configuration['live_exercise_tracking'] == true && $exerciseType == 2 && $exerciseFeedbackType!=1) {
                	
					$nro_question = $questionNum;// - 1;
					//START of saving and qualifying each question submitted
					//------------------------------------------------------------------------------------------
					//
					define('ENABLED_LIVE_EXERCISE_TRACKING',1);
					require_once 'question.class.php';
					require_once 'answer.class.php';
					require_once(api_get_path(LIBRARY_PATH).'events.lib.inc.php');
					$counter=0;
					$main_course_user_table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
					$table_ans 				= Database :: get_course_table(TABLE_QUIZ_ANSWER);
					//foreach($questionList as $questionId)
					if (true) {
						$exeId = $exe_id;
						$questionId = $key;
						$counter++;
						// gets the student choice for this question
						$choice=$exerciseResult[$questionId];
				
						//print_r($choice); echo "<br>";
				
						// creates a temporary Question object
				
						$objQuestionTmp = Question :: read($questionId);
				
						$questionName=$objQuestionTmp->selectTitle();
						$questionDescription=$objQuestionTmp->selectDescription();
						$questionWeighting=$objQuestionTmp->selectWeighting();
						$answerType=$objQuestionTmp->selectType();
						$quesId =$objQuestionTmp->selectId(); //added by priya saini
				
						// destruction of the Question object
						unset($objQuestionTmp);
				
						// construction of the Answer object
						$objAnswerTmp=new Answer($questionId);
						$nbrAnswers=$objAnswerTmp->selectNbrAnswers();
						$questionScore=0;
						if ($answerType == FREE_ANSWER) {
							$nbrAnswers = 1;
						}
				
						for ($answerId=1;$answerId <= $nbrAnswers;$answerId++) {
							$answer=$objAnswerTmp->selectAnswer($answerId);
							$answerComment=$objAnswerTmp->selectComment($answerId);
							$answerCorrect=$objAnswerTmp->isCorrect($answerId);
							$answerWeighting=$objAnswerTmp->selectWeighting($answerId);
				
							switch ($answerType) {
								// for unique answer
								case UNIQUE_ANSWER :
														$studentChoice=($choice == $answerId)?1:0;
				
														if ($studentChoice) {
														  	$questionScore+=$answerWeighting;
															$totalScore+=$answerWeighting;
														}
				
				
														break;
								// for multiple answers
								case MULTIPLE_ANSWER :
				
														$studentChoice=$choice[$answerId];
				
														if ($studentChoice) {
															$questionScore+=$answerWeighting;
															$totalScore+=$answerWeighting;
														}
				
														break;
								// for fill in the blanks
								case FILL_IN_BLANKS :
				
											    		// the question is encoded like this
													    // [A] B [C] D [E] F::10,10,10@1
													    // number 1 before the "@" means that is a switchable fill in blank question
													    // [A] B [C] D [E] F::10,10,10@ or  [A] B [C] D [E] F::10,10,10
													    // means that is a normal fill blank question
				
														// first we explode the "::"
														$pre_array = explode('::', $answer);
				
														// is switchable fill blank or not
				                                        $last = count($pre_array)-1;
														$is_set_switchable = explode('@', $pre_array[$last]);
				
														$switchable_answer_set=false;
														if (isset($is_set_switchable[1]) && $is_set_switchable[1]==1) {
															$switchable_answer_set=true;
														}
				
				                                        $answer = '';
				                                        for ($k=0; $k<$last; $k++) {
														  $answer .= $pre_array[$k];
				                                        }
				
														// splits weightings that are joined with a comma
														$answerWeighting = explode(',',$is_set_switchable[0]);
				
														// we save the answer because it will be modified
														$temp=$answer;
				
														// TeX parsing
														// 1. find everything between the [tex] and [/tex] tags
														$startlocations=strpos($temp,'[tex]');
														$endlocations=strpos($temp,'[/tex]');
				
														if ($startlocations !== false && $endlocations !== false) {
															$texstring=substr($temp,$startlocations,$endlocations-$startlocations+6);
															// 2. replace this by {texcode}
															$temp=str_replace($texstring,'{texcode}',$temp);
														}
				
														$answer='';
														$j=0;
				
				                                        //initialise answer tags
														$user_tags=array();
														$correct_tags=array();
														$real_text=array();
														// the loop will stop at the end of the text
														while (1) {
															// quits the loop if there are no more blanks (detect '[')
															if (($pos = strpos($temp,'[')) === false) {
																// adds the end of the text
																$answer=$temp;
																// TeX parsing - replacement of texcode tags
																$texstring = api_parse_tex($texstring);
																$answer=str_replace("{texcode}",$texstring,$answer);
				                                                $real_text[] = $answer;
																break; //no more "blanks", quit the loop
															}
															// adds the piece of text that is before the blank
				                                            //and ends with '[' into a general storage array
				                                            $real_text[]=substr($temp,0,$pos+1);
															$answer.=substr($temp,0,$pos+1);
															//take the string remaining (after the last "[" we found)
															$temp=substr($temp,$pos+1);
															// quit the loop if there are no more blanks, and update $pos to the position of next ']'
															if (($pos = strpos($temp,']')) === false) {
																// adds the end of the text
																$answer.=$temp;
																break;
															}
															$choice[$j]=trim($choice[$j]);
															$user_tags[]=stripslashes(strtolower($choice[$j]));
															//put the contents of the [] answer tag into correct_tags[]
				                                            $correct_tags[]=strtolower(substr($temp,0,$pos));
															$j++;
															$temp=substr($temp,$pos+1);
				                                            //$answer .= ']';
														}
				
														$answer='';
														$real_correct_tags = $correct_tags;
														$chosen_list=array();
				
														for ($i=0;$i<count($real_correct_tags);$i++) {
															if ($i==0) {
																$answer.=$real_text[0];
															}
				
															if (!$switchable_answer_set) {
																if ($correct_tags[$i]==$user_tags[$i]) {
																	// gives the related weighting to the student
																	$questionScore+=$answerWeighting[$i];
																	// increments total score
																	$totalScore+=$answerWeighting[$i];
																	// adds the word in green at the end of the string
																	$answer.=stripslashes($correct_tags[$i]);
																}
																// else if the word entered by the student IS NOT the same as the one defined by the professor
																elseif(!empty($user_tags[$i])) {
																	// adds the word in red at the end of the string, and strikes it
																	$answer.='<font color="red"><s>'.stripslashes($user_tags[$i]).'</s></font>';
																} else {
																	// adds a tabulation if no word has been typed by the student
																	$answer.='&nbsp;&nbsp;&nbsp;';
																}
															} else {
																// switchable fill in the blanks
																if (in_array($user_tags[$i],$correct_tags)) {
																	$chosen_list[]=$user_tags[$i];
																	$correct_tags=array_diff($correct_tags,$chosen_list);
				
																	// gives the related weighting to the student
																	$questionScore+=$answerWeighting[$i];
																	// increments total score
																	$totalScore+=$answerWeighting[$i];
																	// adds the word in green at the end of the string
																	$answer.=stripslashes($user_tags[$i]);
																} elseif(!empty($user_tags[$i])) {
																	// else if the word entered by the student IS NOT the same as the one defined by the professor
																	// adds the word in red at the end of the string, and strikes it
																	$answer.='<font color="red"><s>'.stripslashes($user_tags[$i]).'</s></font>';
																} else {
																	// adds a tabulation if no word has been typed by the student
																	$answer.='&nbsp;&nbsp;&nbsp;';
																}
															}
															// adds the correct word, followed by ] to close the blank
															$answer.=' / <font color="green"><b>'.$real_correct_tags[$i].'</b></font>]';
															if ( isset( $real_text[$i+1] ) ) {
				                                                $answer.=$real_text[$i+1];
				                                            }
														}
				
														break;
								// for free answer
								case FREE_ANSWER :
														$studentChoice=$choice;
				
														if ($studentChoice) {
															//Score is at -1 because the question has'nt been corected
														  	$questionScore=-1;
															$totalScore+=0;
														}
														break;
								// for matching
								case MATCHING :
														if ($answerCorrect) {
															if ($answerCorrect == $choice[$answerId]) {
																$questionScore+=$answerWeighting;
																$totalScore+=$answerWeighting;
																$choice[$answerId]=$matching[$choice[$answerId]];
															} elseif(!$choice[$answerId]) {
																$choice[$answerId]='&nbsp;&nbsp;&nbsp;';
															} else {
																$choice[$answerId]='<font color="red"><s>'.$matching[$choice[$answerId]].'</s></font>';
															}
														} else {
															$matching[$answerId]=$answer;
														}
														break;
								// for hotspot with no order
								case HOT_SPOT :			$studentChoice=$choice[$answerId];
				
														if($studentChoice) {
															$questionScore+=$answerWeighting;
															$totalScore+=$answerWeighting;
														}
														break;
								// for hotspot with fixed order
								case HOT_SPOT_ORDER :	$studentChoice=$choice['order'][$answerId];
				
														if ($studentChoice == $answerId) {
															$questionScore+=$answerWeighting;
															$totalScore+=$answerWeighting;
															$studentChoice = true;
														} else {
															$studentChoice = false;
														}
														break;
							} // end switch Answertype
						} // end for that loops over all answers of the current question
				
						// destruction of Answer
						unset($objAnswerTmp);
				
						$i++;
				
						$totalWeighting+=$questionWeighting;
						//added by priya saini
						if ($_configuration['tracking_enabled']) {
							if (empty($choice)) {
								$choice = 0;
							}
							if ($answerType==MULTIPLE_ANSWER ) {
								if ($choice != 0) {
									$reply = array_keys($choice);
				
									for ($i=0;$i<sizeof($reply);$i++) {
										$ans = $reply[$i];
										exercise_attempt($questionScore,$ans,$quesId,$exeId,$i);
									}
								} else {
									exercise_attempt($questionScore, 0 ,$quesId,$exeId,0);
								}
							} elseif ($answerType==MATCHING) {
								$j=sizeof($matching)+1;
				
								for ($i=0;$i<sizeof($choice);$i++,$j++) {
									$val = $choice[$j];
									if (preg_match_all ('#<font color="red"><s>([0-9a-z ]*)</s></font>#', $val, $arr1)) {
										$val = $arr1[1][0];
									}
									$val=addslashes($val);
									$val=strip_tags($val);
									$sql = "select position from $table_ans where question_id='".Database::escape_string($questionId)."' and answer='".Database::escape_string($val)."' AND correct=0";
									$res = api_sql_query($sql, __FILE__, __LINE__);
									$answer = mysql_result($res,0,"position");
				
									exercise_attempt($questionScore,$answer,$quesId,$exeId,$j);
				
								}
							} elseif ($answerType==FREE_ANSWER) {
								$answer = $choice;
								exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
							} elseif ($answerType==UNIQUE_ANSWER) {
								$sql = "select id from $table_ans where question_id='".Database::escape_string($questionId)."' and position='".Database::escape_string($choice)."'";
								$res = api_sql_query($sql, __FILE__, __LINE__);
								$answer = mysql_result($res,0,"id");
								exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
							} else {
								exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
							}
						}
					} // end huge foreach() block th					//START of saving and qualifying each question submitted
				//------------------------------------------------------------------------------------------
				//
					define('ENABLED_LIVE_EXERCISE_TRACKING',1);
					require_once 'question.class.php';
					require_once 'answer.class.php';
					require_once(api_get_path(LIBRARY_PATH).'events.lib.inc.php');
					$counter=0;
					$main_course_user_table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
					$table_ans 				= Database :: get_course_table(TABLE_QUIZ_ANSWER);
					//foreach($questionList as $questionId)
					if (true) {
						$exeId = $exe_id;
						$questionId = $key;
						$counter++;
						// gets the student choice for this question
						$choice=$exerciseResult[$questionId];
				
						//print_r($choice); echo "<br>";
				
						// creates a temporary Question object
				
						$objQuestionTmp = Question :: read($questionId);
				
						$questionName=$objQuestionTmp->selectTitle();
						$questionDescription=$objQuestionTmp->selectDescription();
						$questionWeighting=$objQuestionTmp->selectWeighting();
						$answerType=$objQuestionTmp->selectType();
						$quesId =$objQuestionTmp->selectId(); //added by priya saini
				
						// destruction of the Question object
						unset($objQuestionTmp);
				
						// construction of the Answer object
						$objAnswerTmp=new Answer($questionId);
						$nbrAnswers=$objAnswerTmp->selectNbrAnswers();
						$questionScore=0;
						if ($answerType == FREE_ANSWER) {
							$nbrAnswers = 1;
						}
				
						for ($answerId=1;$answerId <= $nbrAnswers;$answerId++) {
							$answer=$objAnswerTmp->selectAnswer($answerId);
							$answerComment=$objAnswerTmp->selectComment($answerId);
							$answerCorrect=$objAnswerTmp->isCorrect($answerId);
							$answerWeighting=$objAnswerTmp->selectWeighting($answerId);
				
							switch ($answerType) {
								// for unique answer
								case UNIQUE_ANSWER :
														$studentChoice=($choice == $answerId)?1:0;
				
														if ($studentChoice) {
														  	$questionScore+=$answerWeighting;
															$totalScore+=$answerWeighting;
														}
				
				
														break;
								// for multiple answers
								case MULTIPLE_ANSWER :
				
														$studentChoice=$choice[$answerId];
				
														if ($studentChoice) {
															$questionScore+=$answerWeighting;
															$totalScore+=$answerWeighting;
														}
				
														break;
								// for fill in the blanks
								case FILL_IN_BLANKS :
				
											    		// the question is encoded like this
													    // [A] B [C] D [E] F::10,10,10@1
													    // number 1 before the "@" means that is a switchable fill in blank question
													    // [A] B [C] D [E] F::10,10,10@ or  [A] B [C] D [E] F::10,10,10
													    // means that is a normal fill blank question
				
														// first we explode the "::"
														$pre_array = explode('::', $answer);
				
														// is switchable fill blank or not
				                                        $last = count($pre_array)-1;
														$is_set_switchable = explode('@', $pre_array[$last]);
				
														$switchable_answer_set=false;
														if (isset($is_set_switchable[1]) && $is_set_switchable[1]==1) {
															$switchable_answer_set=true;
														}
				
				                                        $answer = '';
				                                        for ($k=0; $k<$last; $k++) {
														  $answer .= $pre_array[$k];
				                                        }
				
														// splits weightings that are joined with a comma
														$answerWeighting = explode(',',$is_set_switchable[0]);
				
														// we save the answer because it will be modified
														$temp=$answer;
				
														// TeX parsing
														// 1. find everything between the [tex] and [/tex] tags
														$startlocations=strpos($temp,'[tex]');
														$endlocations=strpos($temp,'[/tex]');
				
														if ($startlocations !== false && $endlocations !== false) {
															$texstring=substr($temp,$startlocations,$endlocations-$startlocations+6);
															// 2. replace this by {texcode}
															$temp=str_replace($texstring,'{texcode}',$temp);
														}
				
														$answer='';
														$j=0;
				
				                                        //initialise answer tags
														$user_tags=array();
														$correct_tags=array();
														$real_text=array();
														// the loop will stop at the end of the text
														while (1) {
															// quits the loop if there are no more blanks (detect '[')
															if (($pos = strpos($temp,'[')) === false) {
																// adds the end of the text
																$answer=$temp;
																// TeX parsing - replacement of texcode tags
																$texstring = api_parse_tex($texstring);
																$answer=str_replace("{texcode}",$texstring,$answer);
				                                                $real_text[] = $answer;
																break; //no more "blanks", quit the loop
															}
															// adds the piece of text that is before the blank
				                                            //and ends with '[' into a general storage array
				                                            $real_text[]=substr($temp,0,$pos+1);
															$answer.=substr($temp,0,$pos+1);
															//take the string remaining (after the last "[" we found)
															$temp=substr($temp,$pos+1);
															// quit the loop if there are no more blanks, and update $pos to the position of next ']'
															if (($pos = strpos($temp,']')) === false) {
																// adds the end of the text
																$answer.=$temp;
																break;
															}
															$choice[$j]=trim($choice[$j]);
															$user_tags[]=stripslashes(strtolower($choice[$j]));
															//put the contents of the [] answer tag into correct_tags[]
				                                            $correct_tags[]=strtolower(substr($temp,0,$pos));
															$j++;
															$temp=substr($temp,$pos+1);
				                                            //$answer .= ']';
														}
				
														$answer='';
														$real_correct_tags = $correct_tags;
														$chosen_list=array();
				
														for ($i=0;$i<count($real_correct_tags);$i++) {
															if ($i==0) {
																$answer.=$real_text[0];
															}
				
															if (!$switchable_answer_set) {
																if ($correct_tags[$i]==$user_tags[$i]) {
																	// gives the related weighting to the student
																	$questionScore+=$answerWeighting[$i];
																	// increments total score
																	$totalScore+=$answerWeighting[$i];
																	// adds the word in green at the end of the string
																	$answer.=stripslashes($correct_tags[$i]);
																}
																// else if the word entered by the student IS NOT the same as the one defined by the professor
																elseif(!empty($user_tags[$i])) {
																	// adds the word in red at the end of the string, and strikes it
																	$answer.='<font color="red"><s>'.stripslashes($user_tags[$i]).'</s></font>';
																} else {
																	// adds a tabulation if no word has been typed by the student
																	$answer.='&nbsp;&nbsp;&nbsp;';
																}
															} else {
																// switchable fill in the blanks
																if (in_array($user_tags[$i],$correct_tags)) {
																	$chosen_list[]=$user_tags[$i];
																	$correct_tags=array_diff($correct_tags,$chosen_list);
				
																	// gives the related weighting to the student
																	$questionScore+=$answerWeighting[$i];
																	// increments total score
																	$totalScore+=$answerWeighting[$i];
																	// adds the word in green at the end of the string
																	$answer.=stripslashes($user_tags[$i]);
																} elseif(!empty($user_tags[$i])) {
																	// else if the word entered by the student IS NOT the same as the one defined by the professor
																	// adds the word in red at the end of the string, and strikes it
																	$answer.='<font color="red"><s>'.stripslashes($user_tags[$i]).'</s></font>';
																} else {
																	// adds a tabulation if no word has been typed by the student
																	$answer.='&nbsp;&nbsp;&nbsp;';
																}
															}
															// adds the correct word, followed by ] to close the blank
															$answer.=' / <font color="green"><b>'.$real_correct_tags[$i].'</b></font>]';
															if ( isset( $real_text[$i+1] ) ) {
				                                                $answer.=$real_text[$i+1];
				                                            }
														}
				
														break;
								// for free answer
								case FREE_ANSWER :
														$studentChoice=$choice;
				
														if ($studentChoice) {
															//Score is at -1 because the question has'nt been corected
														  	$questionScore=-1;
															$totalScore+=0;
														}
														break;
								// for matching
								case MATCHING :
														if ($answerCorrect) {
															if ($answerCorrect == $choice[$answerId]) {
																$questionScore+=$answerWeighting;
																$totalScore+=$answerWeighting;
																$choice[$answerId]=$matching[$choice[$answerId]];
															} elseif(!$choice[$answerId]) {
																$choice[$answerId]='&nbsp;&nbsp;&nbsp;';
															} else {
																$choice[$answerId]='<font color="red"><s>'.$matching[$choice[$answerId]].'</s></font>';
															}
														} else {
															$matching[$answerId]=$answer;
														}
														break;
								// for hotspot with no order
								case HOT_SPOT :			$studentChoice=$choice[$answerId];
				
														if($studentChoice) {
															$questionScore+=$answerWeighting;
															$totalScore+=$answerWeighting;
														}
														break;
								// for hotspot with fixed order
								case HOT_SPOT_ORDER :	$studentChoice=$choice['order'][$answerId];
				
														if ($studentChoice == $answerId) {
															$questionScore+=$answerWeighting;
															$totalScore+=$answerWeighting;
															$studentChoice = true;
														} else {
															$studentChoice = false;
														}
														break;
							} // end switch Answertype
						} // end for that loops over all answers of the current question
				
						// destruction of Answer
						unset($objAnswerTmp);
				
						$i++;
				
						$totalWeighting+=$questionWeighting;
						//added by priya saini
						if ($_configuration['tracking_enabled']) {
							if (empty($choice)) {
								$choice = 0;
							}
							if ($answerType==MULTIPLE_ANSWER ) {
								if ($choice != 0) {
									$reply = array_keys($choice);
				
									for ($i=0;$i<sizeof($reply);$i++) {
										$ans = $reply[$i];

										exercise_attempt($questionScore,$ans,$quesId,$exeId,$i);
									}
								} else {
									exercise_attempt($questionScore, 0 ,$quesId,$exeId,0);
								}
							} elseif ($answerType==MATCHING) {
								$j=sizeof($matching)+1;
				
								for ($i=0;$i<sizeof($choice);$i++,$j++) {
									$val = $choice[$j];
									if (preg_match_all ('#<font color="red"><s>([0-9a-z ]*)</s></font>#', $val, $arr1)) {
										$val = $arr1[1][0];
									}
									$val=addslashes($val);
									$val=strip_tags($val);
									$sql = "select position from $table_ans where question_id='".Database::escape_string($questionId)."' and answer='".Database::escape_string($val)."' AND correct=0";
									$res = api_sql_query($sql, __FILE__, __LINE__);
									$answer = mysql_result($res,0,"position");
				
									exercise_attempt($questionScore,$answer,$quesId,$exeId,$j);
				
								}
							} elseif ($answerType==FREE_ANSWER) {
								$answer = $choice;
								exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
							} elseif ($answerType==UNIQUE_ANSWER) {
								$sql = "select id from $table_ans where question_id='".Database::escape_string($questionId)."' and position='".Database::escape_string($choice)."'";
								$res = api_sql_query($sql, __FILE__, __LINE__);
								$answer = mysql_result($res,0,"id");
								exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
							} else {
								exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
							}
						}
					} // end huge foreach() block that loops over all questions
						api_sql_query('UPDATE '.$stat_table.' SET exe_result = exe_result + '.(int)$totalScore.',exe_weighting = exe_weighting + '.(int)$totalWeighting.' WHERE exe_id = '.$exe_id,__FILE__,__LINE__);
				//END of saving and qualifying
				//------------------------------------------------------------------------------------------
				//at loops over all questions
						api_sql_query('UPDATE '.$stat_table.' SET exe_result = exe_result + '.(int)$totalScore.',exe_weighting = exe_weighting + '.(int)$totalWeighting.' WHERE exe_id = '.$exe_id,__FILE__,__LINE__);
				//END of saving and qualifying
				//------------------------------------------------------------------------------------------
				//
                }

                if (isset($_POST['hotspot'])) {
                	$exerciseResultCoordinates[$key] = $_POST['hotspot'][$key];
                }
            }
        }
        if ($debug>0) {
        	echo str_repeat('&nbsp;',0).'$choice is an array - end'."<br />\n";
        }
    }

    // the script "exercise_result.php" will take the variable $exerciseResult from the session
    api_session_register('exerciseResult');
    api_session_register('exerciseResultCoordinates');

    // if it is the last question (only for a sequential exercise)
    if($exerciseType == 1 || $questionNum >= $nbrQuestions) {
        if ($debug>0) {
        	echo str_repeat('&nbsp;',0).'Redirecting to exercise_result.php - Remove debug option to let this happen'."<br />\n";
        }
		 // goes to the script that will show the result of the exercise
        if ($exerciseType == 1) {
    	   	header("Location: exercise_result.php?exerciseType=$exerciseType&origin=$origin&learnpath_id=$learnpath_id&learnpath_item_id=$learnpath_item_id");
	    } else {
	    	if ($exe_id!='') {
	        	//clean incomplete
    	    	$update_query = 'UPDATE '.$stat_table.' SET '."status = '', data_tracking='', exe_date = '".date('Y-m-d H:i:s')."'".' WHERE exe_id = '.$exe_id;
        		api_sql_query($update_query,__FILE__,__LINE__);
	    	}
        	header("Location: exercise_show.php?id=$exeId&origin=$origin&learnpath_id=$learnpath_id&learnpath_item_id=$learnpath_item_id");
        }
        exit();
    }
    if ($debug>0) {
    	echo str_repeat('&nbsp;',0).'$formSent was set - end'."<br />\n";
    }
}

// if the object is not in the session
if (!isset($_SESSION['objExercise']) || $origin == 'learnpath' || $_SESSION['objExercise']->id != $_REQUEST['exerciseId']) {
	
    if ($debug>0) {
    	echo str_repeat('&nbsp;',0).'$_SESSION[objExercise] was unset'."<br />\n";
    }
    // construction of Exercise
    $objExercise=new Exercise();
    unset($_SESSION['questionList']);
	
    // if the specified exercise doesn't exist or is disabled
    if (!$objExercise->read($exerciseId) || (!$objExercise->selectStatus() && !$is_allowedToEdit && ($origin != 'learnpath') )) {
    	unset($objExercise);
    	$error = get_lang('ExerciseNotFound');
        //die(get_lang('ExerciseNotFound'));
    } else {
	    // saves the object into the session
	    api_session_register('objExercise');
	    if ($debug>0) {
	    	echo str_repeat('&nbsp;',0).'$_SESSION[objExercise] was unset - set now - end'."<br />\n";
	    }
    }
}

if (!isset($objExcercise) && isset($_SESSION['objExercise'])) {
	$objExercise = $_SESSION['objExercise'];		
}
if (!is_object($objExercise)) {
	header('Location: exercice.php');
	exit();
}
$Exe_starttime = $objExercise->start_time;
$Exe_endtime = $objExercise->end_time;
$quizID = $objExercise->selectId();
$exerciseAttempts=$objExercise->selectAttempts();
$exerciseTitle=$objExercise->selectTitle();
$exerciseDescription=$objExercise->selectDescription();
$exerciseDescription=stripslashes($exerciseDescription);
$exerciseSound=$objExercise->selectSound();
$randomQuestions=$objExercise->isRandom();
$exerciseType=$objExercise->selectType();

if(!isset($_SESSION['questionList']) || $origin == 'learnpath')
{
    if($debug>0){echo str_repeat('&nbsp;',0).'$_SESSION[questionList] was unset'."<br />\n";}
    // selects the list of question ID
    $questionList = ($randomQuestions?$objExercise->selectRandomList():$objExercise->selectQuestionList());
    // saves the question list into the session
    api_session_register('questionList');
    if($debug>0){echo str_repeat('&nbsp;',0).'$_SESSION[questionList] was unset - set now - end'."<br />\n";}
}
if(!isset($objExcercise) && isset($_SESSION['objExercise'])){
	$questionList = $_SESSION['questionList'];
}

$quizStartTime = time();
api_session_register('quizStartTime');

$nbrQuestions=sizeof($questionList);

// if questionNum comes from POST and not from GET
if(!$questionNum || $_POST['questionNum'])
{
    // only used for sequential exercises (see $exerciseType)
    if(!$questionNum)
    {
        $questionNum=1;
    }
    else
    {
        $questionNum++;
    }
}


//$nameTools=get_lang('Exercice');

$interbreadcrumb[]=array("url" => "exercice.php","name" => get_lang('Exercices'));
$interbreadcrumb[]=array("url" => "#","name" => $exerciseTitle);

if ($origin != 'learnpath') { //so we are not in learnpath tool

$htmlHeadXtra[] = "<script type=\"text/javascript\" src=\"../plugin/hotspot/JavaScriptFlashGateway.js\"></script>
					<script src=\"../plugin/hotspot/hotspot.js\" type=\"text/javascript\"></script>
					<script language=\"JavaScript\" type=\"text/javascript\">
					<!--
					// -----------------------------------------------------------------------------
					// Globals
					// Major version of Flash required
					var requiredMajorVersion = 7;
					// Minor version of Flash required
					var requiredMinorVersion = 0;
					// Minor version of Flash required
					var requiredRevision = 0;
					// the version of javascript supported
					var jsVersion = 1.0;
					// -----------------------------------------------------------------------------
					// -->
					</script>
					<script language=\"VBScript\" type=\"text/vbscript\">
					<!-- // Visual basic helper required to detect Flash Player ActiveX control version information
					Function VBGetSwfVer(i)
					  on error resume next
					  Dim swControl, swVersion
					  swVersion = 0

					  set swControl = CreateObject(\"ShockwaveFlash.ShockwaveFlash.\" + CStr(i))
					  if (IsObject(swControl)) then
					    swVersion = swControl.GetVariable(\"\$version\")
					  end if
					  VBGetSwfVer = swVersion
					End Function
					// -->
					</script>

					<script language=\"JavaScript1.1\" type=\"text/javascript\">
					<!-- // Detect Client Browser type
					var isIE  = (navigator.appVersion.indexOf(\"MSIE\") != -1) ? true : false;
					var isWin = (navigator.appVersion.toLowerCase().indexOf(\"win\") != -1) ? true : false;
					var isOpera = (navigator.userAgent.indexOf(\"Opera\") != -1) ? true : false;
					jsVersion = 1.1;
					// JavaScript helper required to detect Flash Player PlugIn version information
					function JSGetSwfVer(i){
						// NS/Opera version >= 3 check for Flash plugin in plugin array
						if (navigator.plugins != null && navigator.plugins.length > 0) {
							if (navigator.plugins[\"Shockwave Flash 2.0\"] || navigator.plugins[\"Shockwave Flash\"]) {
								var swVer2 = navigator.plugins[\"Shockwave Flash 2.0\"] ? \" 2.0\" : \"\";
					      		var flashDescription = navigator.plugins[\"Shockwave Flash\" + swVer2].description;
								descArray = flashDescription.split(\" \");
								tempArrayMajor = descArray[2].split(\".\");
								versionMajor = tempArrayMajor[0];
								versionMinor = tempArrayMajor[1];
								if ( descArray[3] != \"\" ) {
									tempArrayMinor = descArray[3].split(\"r\");
								} else {
									tempArrayMinor = descArray[4].split(\"r\");
								}
					      		versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
					            flashVer = versionMajor + \".\" + versionMinor + \".\" + versionRevision;
					      	} else {
								flashVer = -1;
							}
						}
						// MSN/WebTV 2.6 supports Flash 4
						else if (navigator.userAgent.toLowerCase().indexOf(\"webtv/2.6\") != -1) flashVer = 4;
						// WebTV 2.5 supports Flash 3
						else if (navigator.userAgent.toLowerCase().indexOf(\"webtv/2.5\") != -1) flashVer = 3;
						// older WebTV supports Flash 2
						else if (navigator.userAgent.toLowerCase().indexOf(\"webtv\") != -1) flashVer = 2;
						// Can't detect in all other cases
						else {

							flashVer = -1;
						}
						return flashVer;
					}
					// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
					function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
					{
					 	reqVer = parseFloat(reqMajorVer + \".\" + reqRevision);
					   	// loop backwards through the versions until we find the newest version
						for (i=25;i>0;i--) {
							if (isIE && isWin && !isOpera) {
								versionStr = VBGetSwfVer(i);
							} else {
								versionStr = JSGetSwfVer(i);
							}
							if (versionStr == -1 ) {
								return false;
							} else if (versionStr != 0) {
								if(isIE && isWin && !isOpera) {
									tempArray         = versionStr.split(\" \");
									tempString        = tempArray[1];
									versionArray      = tempString .split(\",\");
								} else {
									versionArray      = versionStr.split(\".\");
								}
								versionMajor      = versionArray[0];
								versionMinor      = versionArray[1];
								versionRevision   = versionArray[2];

								versionString     = versionMajor + \".\" + versionRevision;   // 7.0r24 == 7.24
								versionNum        = parseFloat(versionString);
					        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
								if ( (versionMajor > reqMajorVer) && (versionNum >= reqVer) ) {
									return true;
								} else {
									return ((versionNum >= reqVer && versionMinor >= reqMinorVer) ? true : false );
								}
							}
						}
					}
					// -->
					</script>";
	$htmlHeadXtra[] = "<script type=\"text/javascript\" src=\"../inc/lib/javascript/custom-form-elements.js\"></script>";
	Display::display_header($nameTools,"Exercise");
}
else
{
	if(empty($charset))
	{
		$charset = 'ISO-8859-15';
	}
	header('Content-Type: text/html; charset='. $charset);

	@$document_language = Database::get_language_isocode($language_interface);
	if(empty($document_language))
	{
	  //if there was no valid iso-code, use the english one
	  $document_language = 'en';
	}

	/*
	 * HTML HEADER
	 */

?>
<!DOCTYPE html
     PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $document_language; ?>" lang="<?php echo $document_language; ?>">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=<?php echo $charset; ?>" />
</head>

<body>
<link rel="stylesheet" type="text/css" href="<?php echo api_get_path(WEB_CODE_PATH).'css/'.api_get_setting('stylesheets').'/frames.css'; ?>" />

<?php
}

 $exerciseTitle=api_parse_tex($exerciseTitle);

echo "<h3>".$exerciseTitle."</h3>";

if( $exerciseAttempts > 0){
	$user_id = api_get_user_id();
	$course_code = api_get_course_id();
 	$sql = "SELECT count(*) FROM $stat_table WHERE exe_exo_id = '$quizID'
			AND exe_user_id = '$user_id'
			AND status != 'incomplete'
			AND orig_lp_id = $safe_lp_id 
			AND orig_lp_item_id = $safe_lp_item_id  
            AND exe_cours_id = '$course_code' AND session_id = '".(int)$_SESSION['id_session']."'";

 	$aquery = api_sql_query($sql, __FILE__, __LINE__);
 	$attempt = Database::fetch_array($aquery);

    if ( $attempt[0] >= $exerciseAttempts ) {
    	if (!api_is_allowed_to_edit()) {
	    	Display::display_warning_message(sprintf(get_lang('ReachedMaxAttempts'),$exerciseTitle,$exerciseAttempts));
	 	  	Display::display_footer();
	 	  	exit;
	    } else {
	        Display::display_warning_message(sprintf(get_lang('ReachedMaxAttemptsAdmin'),$exerciseTitle,$exerciseAttempts));
		}
	}
}

if (!function_exists('convert_date_to_number')) {
function convert_date_to_number($default){
	// 2008-10-12 00:00:00 ---to--> 12345672218 (timestamp)
	$parts = split(' ',$default);
	list($d_year,$d_month,$d_day) = split('-',$parts[0]);
	list($d_hour,$d_minute,$d_second) = split(':',$parts[1]);
	return mktime($d_hour, $d_minute, $d_second, $d_month, $d_day, $d_year);
}
}

$limit_time_exists = (($Exe_starttime!='0000-00-00 00:00:00')||($Exe_endtime!='0000-00-00 00:00:00'))? true : false;
if($limit_time_exists){
	$exercise_start_time = convert_date_to_number($Exe_starttime);
	$exercise_end_time = convert_date_to_number($Exe_endtime);
	$time_now = convert_date_to_number(date('Y-m-d H:i:s'));
	$permission_to_start = (($time_now - $exercise_start_time)>0)?true:false;
	if($_SERVER['REQUEST_METHOD']!='POST')$exercise_timeover = (($time_now - $exercise_end_time)>0)?true:false;
	if($permission_to_start == false || $exercise_timeover == true ){ //
    	if(!api_is_allowed_to_edit()){
    		$message_warning = ($permission_to_start == false)? get_lang('ExerciseNoStartedYet') : get_lang('ReachedTimeLimit') ;
	    	Display::display_warning_message(sprintf($message_warning,$exerciseTitle,$exerciseAttempts));
	 	  	Display::display_footer();
	 	  	exit;
	    } else {
			$message_warning = ($permission_to_start == false)? get_lang('ExerciseNoStartedAdmin') : get_lang('ReachedTimeLimitAdmin') ;
	        Display::display_warning_message(sprintf($message_warning,$exerciseTitle,$exerciseAttempts));
		}
	}
}

if(!empty($error))
{
	Display::display_error_message($error,false);
}
else
{
	if(!empty($exerciseSound)) {
		echo "<a href=\"../document/download.php?doc_url=%2Faudio%2F".$exerciseSound."\" target=\"_blank\">",
			"<img src=\"../img/sound.gif\" border=\"0\" align=\"absmiddle\" alt=",get_lang('Sound')."\" /></a>";
	}

	// Get number of hotspot questions for javascript validation
	$number_of_hotspot_questions = 0;
	$onsubmit = '';
	$i=0;
	
	foreach($questionList as $questionId)
	{
		$i++;
		$objQuestionTmp = Question :: read($questionId);
		
		// for sequential exercises
		if($exerciseType == 2) {
			// if it is not the right question, goes to the next loop iteration
			if($questionNum != $i)
			{
				continue;
			}
			else
			{
				if ($objQuestionTmp->selectType() == HOT_SPOT)
				{
					$number_of_hotspot_questions++;
				}
				break;
			}
		}
		else
		{
			if ($objQuestionTmp->selectType() == HOT_SPOT)
			{
				$number_of_hotspot_questions++;
			}
		}
	}

	if($number_of_hotspot_questions > 0)
	{
		$onsubmit = "onsubmit=\"return validateFlashVar('".$number_of_hotspot_questions."', '".get_lang('HotspotValidateError1')."', '".get_lang('HotspotValidateError2')."');\"";
	}
	$s="<p>$exerciseDescription</p>";

	if($exerciseType==2){
		$s2 = "&exerciseId=".$exerciseId;
	}
	$s.=" <form method='post' action='".api_get_self()."?autocomplete=off".$s2."' name='frm_exercise' $onsubmit>
	 <input type='hidden' name='formSent' value='1' />
	 <input type='hidden' name='exerciseType' value='".$exerciseType."' />
	 <input type='hidden' name='exerciseId' value='".$exerciseId."' />
	 <input type='hidden' name='questionNum' value='".$questionNum."' />
	 <input type='hidden' name='nbrQuestions' value='".$nbrQuestions."' />
	 <input type='hidden' name='origin' value='".$origin."' />
	 <input type='hidden' name='learnpath_id' value='".$learnpath_id."' />
	 <input type='hidden' name='learnpath_item_id' value='".$learnpath_item_id."' />
	<table width='100%' border='0' cellpadding='1' cellspacing='0'>
	 <tr>
	  <td>
	  <table width='100%' cellpadding='3' cellspacing='0' border='0'>";
	echo $s;
	$i=0;	
	foreach($questionList as $questionId) {
		$i++;		
		// for sequential exercises
		if($exerciseType == 2) {
			// if it is not the right question, goes to the next loop iteration			
			if($questionNum != $i){
				continue;
			} else {			
				if ($exerciseFeedbackType!=1) {
					// if the user has already answered this question
					if(isset($exerciseResult[$questionId])) {
						// construction of the Question object
						$objQuestionTmp = Question::read($questionId);				
						$questionName=$objQuestionTmp->selectTitle();
						// destruction of the Question object
						unset($objQuestionTmp);
						echo '<tr><td>'.get_lang('AlreadyAnswered').' &quot;'.$questionName.'&quot;</td></tr>';	
						break;
					}
				}
			}
		}
			/*
		$s="<tr>
		 <td width='3%' bgcolor='#e6e6e6'><img src=\"".api_get_path(WEB_IMG_PATH)."test.gif\" align=\"absmiddle\"></td>
		 <td valign='middle' bgcolor='#e6e6e6'>
			".get_lang('Question')." ";
		*/
		
		// shows the question and its answers		
		showQuestion($questionId, false, $origin,$i,$nbrQuestions);
		// for sequential exercises
		if($exerciseType == 2) {
			// quits the loop
			break;
		}
	}
	// end foreach()
	
	echo "	  	
		 <!-- <button type='submit' name='buttonCancel' class='cancel'>".get_lang('Cancel')."</button>
	   &nbsp;&nbsp; //--><br />";
		$submit_btn="<button class=\"save\" type='submit' name='submit'>";
		//	$submit_btn.=get_lang('ValidateAnswer'); 
		if ($objExercise->selectFeedbackType()==1 && $_SESSION['objExercise']->selectType()==2) {						
			$submit_btn='';
			echo '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/thickbox.js" type="text/javascript"></script>';						
			echo '<style type="text/css" media="all">@import "'.api_get_path(WEB_LIBRARY_PATH).'javascript/thickbox.css";</style>';
			$hotspot_get=$_POST['hotspot'];
			// Show a hidden div			
			echo "<script>$(document).ready( function(){
					  $('.rounded').corners();
					  $('.rounded_inner').corners();
					});</script>";
			//echo '<br /><span class="rounded" style="width: 300px; margin-top: 10px; padding: 3px; background-color:#ccc;"><span style="width: 300px" class="rounded_inner" ><a href="exercise_submit_modal.php?hotspot='.$hotspot_get.'&nbrQuestions='.$nbrQuestions.'&questionnum='.$questionNum.'&exerciseType='.$exerciseType.'&exerciseId='.$exerciseId.'&placeValuesBeforeTB_=savedValues&TB_iframe=true&height=480&width=640&modal=true" title="" class="thickbox" id="validationButton">'.get_lang('ValidateAnswer').'</a></span></span><br /><br /><br />';
			echo '<br /><div class="rounded" style="text-align: center;"><div class="rounded_inner"><a href="exercise_submit_modal.php?hotspot='.$hotspot_get.'&nbrQuestions='.$nbrQuestions.'&questionnum='.$questionNum.'&exerciseType='.$exerciseType.'&exerciseId='.$exerciseId.'&placeValuesBeforeTB_=savedValues&TB_iframe=true&height=480&width=640&modal=true" title="" class="thickbox" id="validationButton">'.get_lang('ValidateAnswer').'</a></div></div><br /><br /><br />';				
		} else {
			if ($exerciseType == 1 || $nbrQuestions == $questionNum)
			{
				$submit_btn.=get_lang('ValidateAnswer'); 
			}
			else
			{
				$submit_btn.=get_lang('Next').' &gt;';
			}
			$submit_btn.= "</button>"; 
		}			
	echo $submit_btn;	 
	echo "</form>";	
	$b=2;
}

    if($_configuration['live_exercise_tracking'] == true && $exerciseFeedbackType!=1) { 
    	//if($questionNum < 2){
    	if($table_recorded_not_exist){
    		if($exerciseType == 2){
			api_sql_query("INSERT INTO $stat_table(exe_exo_id,exe_user_id,exe_cours_id,status,session_id,data_tracking,start_date,orig_lp_id,orig_lp_item_id)
							VALUES('$exerciseId','".api_get_user_id()."','".$_course['id']."','incomplete','".api_get_session_id()."','".implode(',',$questionList)."','".date('Y-m-d H:i:s')."',$safe_lp_id,$safe_lp_item_id)",__FILE__,__LINE__);
    		} else {
   			api_sql_query("INSERT INTO $stat_table (exe_exo_id,exe_user_id,exe_cours_id,status,session_id,start_date,orig_lp_id,orig_lp_item_id)
						   VALUES('$exerciseId','".api_get_user_id()."','".$_course['id']."','incomplete','".api_get_session_id()."','".date('Y-m-d H:i:s')."',$safe_lp_id,$safe_lp_item_id)",__FILE__,__LINE__);
    		}
		}
    }

if ($origin != 'learnpath') { //so we are not in learnpath tool
    Display::display_footer();
}