function Quiz()
{
	this.AddQuestion = Quiz_AddQuestion;
	this.RandomizeQuestions = Quiz_RandomizeQuestions;
	this.HasAllGuesses = Quiz_HasAllGuesses;
	this.Evaluate = Quiz_EvaluateQuestions;
	this.Render = Quiz_Render;
	this.AddScore = Quiz_AddScore;
	
	this.GetPossiblePoints = Quiz_GetPossiblePoints;
	this.GetAwardedPoints = Quiz_GetAwardedPoints;
	this.GetPercentage = Quiz_GetPercentage;
	this.SetQuestionNumberStyle = Quiz_SetQuestionNumberStyle;
	this.SetQuestionNumberCssClass = Quiz_SetQuestionNumberCssClass;
	this.SetRequireAllGuesses = Quiz_SetRequireAllGuesses;
	this.SetNeedAllGuessesHTML = Quiz_SetNeedAllGuessesHTML;
	this.SetNeedAllGuessesCssClass = Quiz_SetNeedAllGuessesCssClass;
	this.SetScoreByPercentage = Quiz_SetScoreByPercentage;
	this.SetScoreCssClass = Quiz_SetScoreCssClass;
	
	// internal use
	this._questions = new Array();
	this._scores = new Array();
	this._nPossiblePoints = 0;
	this._rAwardedPoints = 0;
	this._nAwardedPercentage = 0;
	this._sQuestionNumberStyle = "1";
	this._sQuestionNumberCssClass = "";
	this._bRequireAllGuesses = false;
	this._sNeedAllGuessesHTML = "";
	this._sNeedAllGuessesCssClass = "";
	this._bByPercentage = false;
	this._sScoreCssClass = "";
}

function Quiz_AddQuestion(oQuestion)
{
	this._questions.push(oQuestion);
}

function Quiz_RandomizeQuestions()
{
	var aRandom = Quiz_GetRandomArray(this._questions.length);
	for (var n = 0; n < aRandom.length; n++)
		this._questions[n]._nNumber = aRandom[n];
}

function Quiz_GetRandomArray(nLength)
{
	var n;
	var aUnusedNumbers = new Array();
	for (n = 0; n < nLength; n++)
		aUnusedNumbers[n] = n + 1;
	var aSelectedNumbers = new Array();
	while (aSelectedNumbers.length < nLength)
		{
		var bNumberUsedAlready;
		do
			{
			n = Math.floor(Math.random() * nLength);
			bNumberUsedAlready = (aUnusedNumbers[n] == 0);
			}
		while (bNumberUsedAlready)
		aSelectedNumbers.push(aUnusedNumbers[n]);
		aUnusedNumbers[n] = 0;
		}
	return aSelectedNumbers;
}

function Quiz_HasAllGuesses()
{
	var cHasGuesses = 0;
	for (var nQuestion = 0; nQuestion < this._questions.length; nQuestion++)
		cHasGuesses += this._questions[nQuestion].HasGuess() ? 1 : 0;
	return (cHasGuesses == this._questions.length);
}

function Quiz_EvaluateQuestions()
{
	Quiz_ConcealAllEvaluations(this);
	if (this._bRequireAllGuesses)
		{
		var elmNeedAllGuesses = document.getElementById("_quiz_divNeedAllGuesses");
		if (! this.HasAllGuesses())
			{
			elmNeedAllGuesses.style.display = "block";
			return false;
			}
		else
			elmNeedAllGuesses.style.display = "none";
		}

	this.GetPossiblePoints();
	this._rAwardedPoints = 0;
	for (var nQuestion = 0; nQuestion < this._questions.length; nQuestion++)
		{
		var oQuestion = this._questions[nQuestion];
		oQuestion.Evaluate();
		this._rAwardedPoints += oQuestion.GetAwardedPoints();
		Quiz_RevealEvaluation(oQuestion);
		}
	this._nAwardedPercentage = Math.floor((this._rAwardedPoints * 100) / this._nPossiblePoints);

	var oAwardedScore = null;
	for (var nScore = 0; nScore < this._scores.length; nScore++)
		{
		var oScore = this._scores[nScore];
		if (this._bByPercentage)
			{
			if ((this._nAwardedPercentage >= oScore._rMinScore) && ((oAwardedScore == null) || (oScore._rMinScore > oAwardedScore._rMinScore)))
				oAwardedScore = oScore;
			}
		else
			{
			if ((this._rAwardedPoints >= oScore._rMinScore) && ((oAwardedScore == null) || (oScore._rMinScore > oAwardedScore._rMinScore)))
				oAwardedScore = oScore;
			}
		}
	if (oAwardedScore != null)
		{
		var elmScore = document.getElementById("_quiz_divScorebox");
		if (oAwardedScore._sScoreCssClass.length > 0)
			elmScore.className = oAwardedScore._sScoreCssClass;
		elmScore.innerHTML = oAwardedScore._sScoreHTML;
		elmScore.style.display = "block";
		}
	
	return true;
}

function Quiz_ConcealAllEvaluations(oQuiz)
{
	var elmScore = document.getElementById("_quiz_divScorebox");
	elmScore.style.display = "none";
	
	for (var nQuestion = 0; nQuestion < oQuiz._questions.length; nQuestion++)
		{
		var oQuestion = oQuiz._questions[nQuestion];
		var sQuestionID = "_quiz_Question_" + oQuestion._nNumber.toString();
		var elmQuestionEvalCorrect = document.getElementById(sQuestionID + "_Correct");
		var elmQuestionEvalIncorrect = document.getElementById(sQuestionID + "_Incorrect");
		if (elmQuestionEvalCorrect != null)
			elmQuestionEvalCorrect.style.display = "none";
		if (elmQuestionEvalIncorrect != null)
			elmQuestionEvalIncorrect.style.display = "none";
		}
}

function Quiz_RevealEvaluation(oQuestion)
{
	var sQuestionID = "_quiz_Question_" + oQuestion._nNumber.toString();
	var elmQuestionEvalCorrect = document.getElementById(sQuestionID + "_Correct");
	var elmQuestionEvalIncorrect = document.getElementById(sQuestionID + "_Incorrect");

	if (oQuestion.GetAwardedPoints() > 0)
		{
		if (oQuestion._sQuestionType == "MS" && !oQuestion._bAllOrNothing)
			{
			if (oQuestion._bAnsweredAll)
				{
				elmQuestionEvalCorrect.style.display = "block";
				elmQuestionEvalIncorrect.style.display = "none";
				}
			else
				{
				elmQuestionEvalCorrect.style.display = "none";
				elmQuestionEvalIncorrect.style.display = "block";
				}
			}
		else
			{
			elmQuestionEvalCorrect.style.display = "block";
			elmQuestionEvalIncorrect.style.display = "none";
			}
		}
	if (oQuestion.GetAwardedPoints() == 0)
		{
		elmQuestionEvalCorrect.style.display = "none";
		elmQuestionEvalIncorrect.style.display = "block";
		}
}

function Quiz_Render()
{
	Quiz_RenderQuestions(this);
	Quiz_RenderNeedAllGuesses(this);
	Quiz_RenderScoreBox(this);
}

function Quiz_RenderQuestions(oQuiz)
{
	var aSortedQuestions = new Array();
	for (var nQuestion = 0; nQuestion < oQuiz._questions.length; nQuestion++)
		{
		var oQuestion = oQuiz._questions[nQuestion];
		if (oQuestion._nNumber == 0)
			oQuestion._nNumber = nQuestion + 1;
		else if(oQuestion._nNumber > oQuiz._questions.length)
			throw "You must renumber your questions from 1 to the number of questions you have.";
		else if(aSortedQuestions[oQuestion._nNumber - 1] != null)
			throw "You have already used the number " + oQuestion._nNumber + " in a question.";
		
		aSortedQuestions[oQuestion._nNumber - 1] = oQuestion;
		}
	for (var nQuestion = 0; nQuestion < aSortedQuestions.length; nQuestion++)
		Quiz_RenderQuestion(oQuiz, aSortedQuestions[nQuestion]);
}

function Quiz_RenderQuestion(oQuiz, oQuestion)
{
	document.write("<div");
	document.write(" id=\"_quiz_Question_" + oQuestion._nNumber + "\"");
	if (oQuestion._sQuestionCssClass.length > 0)
		document.write(" class=\"" + oQuestion._sQuestionCssClass + "\"");
	document.write(">");
	
	var sNumber = Quiz_GetFormattedNumber(oQuestion._nNumber, oQuiz._sQuestionNumberStyle);
	document.write("<span");
	if (oQuiz._sQuestionNumberCssClass.length > 0)
		document.write(" class=\"" + oQuiz._sQuestionNumberCssClass + "\"");
	document.write(">");
	document.write(sNumber);
	document.write("</span>");
	
	document.write("<span");
	document.write(">");
	document.write(oQuestion._sQuestionHTML);
	document.write("</span>");
	
	Quiz_RenderAnswers(oQuiz, oQuestion);
	
	document.write("</div>");
	
	Quiz_RenderEvaluation(oQuiz, oQuestion);
}

function Quiz_RenderAnswers(oQuiz, oQuestion)
{
	var aSortedAnswers = new Array();
	for (var nAnswer = 0; nAnswer < oQuestion._answers.length; nAnswer++)
		{
		var oAnswer = oQuestion._answers[nAnswer];
		if (oAnswer._nNumber == 0)
			oAnswer._nNumber = nAnswer + 1;
		else if(oAnswer._nNumber > oQuestion._answers.length)
			throw "You must renumber your answers from 1 to the number of answers you have in question '" + oQuestion._nNumber + ".";
		else if(aSortedAnswers[oAnswer._nNumber - 1] != null)
			{
			throw "You have already used the number " + oAnswer._nNumber + " in an answer.";
			}
		
		aSortedAnswers[oAnswer._nNumber - 1] = oAnswer;
		}
	for (var nAnswer = 0; nAnswer < aSortedAnswers.length; nAnswer++)
		Quiz_RenderAnswer(oQuiz, oQuestion, aSortedAnswers[nAnswer]);
}

function Quiz_RenderAnswer(oQuiz, oQuestion, oAnswer)
{
	document.write("<div");
	document.write(" id=\"_quiz_Question_" + oQuestion._nNumber + "_Answer_" + oAnswer._nNumber + "_div\"");
	if (oAnswer._sAnswerCssClass.length > 0)
		document.write(" class=\"" + oAnswer._sAnswerCssClass + "\"");
	document.write(">");
	
	
	var sNumber = Quiz_GetFormattedNumber(oAnswer._nNumber, oQuestion._sAnswerNumberStyle);
	document.write("<span");
	if (oQuestion._sAnswerNumberCssClass.length > 0)
		document.write(" class=\"" + oQuestion._sAnswerNumberCssClass + "\"");
	document.write(">");
	document.write(sNumber);
	document.write("</span>");

	document.write("<span");
	document.write(">");
	var sName = "_quiz_Question_" + oQuestion._nNumber;
	var sID = sName + "_Answer_" + oAnswer._nNumber;
	if (oQuestion._sQuestionType == "TF" || oQuestion._sQuestionType == "MC" || oQuestion._sQuestionType == "none")
		{
		document.write("<input");
		document.write(" type=\"radio\"");
		document.write(" name=\"" + sName + "\"");
		document.write(" id=\"" + sID + "\"");
		document.write(">");
		document.write("&nbsp;");
		document.write("<label");
		document.write(" for=\"" + sID + "\"");
		document.write(">");
		document.write(oAnswer._sAnswerHTML);
		document.write("</label>");
		}
	else if(oQuestion._sQuestionType == "MS")
		{
		document.write("<input");
		document.write(" type=\"checkbox\"");
		document.write(" id=\"" + sID + "\"");
		document.write(">");
		document.write("&nbsp;");
		document.write("<label");
		document.write(" for=\"" + sID + "\"");
		document.write(">");
		document.write(oAnswer._sAnswerHTML);
		document.write("</label>");
		}
	document.write("</span>");
	document.write("</div>");
}

function Quiz_RenderEvaluation(oQuiz, oQuestion)
{
	document.write("<div");
	document.write(" id=\"_quiz_Question_" + oQuestion._nNumber + "_Correct\"");
	if (oQuestion._sCorrectCssClass.length > 0)
		document.write(" class=\"" + oQuestion._sCorrectCssClass + "\"");
	document.write(" style=\"display:none;\"");
	document.write(">");
	document.write(oQuestion._sCorrectHTML);
	document.write("</div>");
	
	document.write("<div");
	document.write(" id=\"_quiz_Question_" + oQuestion._nNumber + "_Incorrect\"");
	if (oQuestion._sIncorrectCssClass.length > 0)
		document.write(" class=\"" + oQuestion._sIncorrectCssClass + "\"");
	document.write(" style=\"display:none;\"");
	document.write(">");
	document.write(oQuestion._sIncorrectHTML);
	document.write("</div>");	
}

function Quiz_RenderNeedAllGuesses(oQuiz)
{
	document.write("<div");
	document.write(" id=\"_quiz_divNeedAllGuesses\"");
	if (oQuiz._sNeedAllGuessesCssClass.length > 0)
		document.write(" class=\"" + oQuiz._sNeedAllGuessesCssClass + "\"");
	document.write(" style=\"display:none;\"");
	document.write(">");
	document.write(oQuiz._sNeedAllGuessesHTML);
	document.write("</div>");
}

function Quiz_RenderScoreBox(oQuiz)
{
	document.write("<div");
	document.write(" id=\"_quiz_divScorebox\"");
	if (oQuiz._sScoreCssClass.length > 0)
		document.write(" class=\"" + oQuiz._sScoreCssClass + "\"");
	document.write(" style=\"display:none;\"");
	document.write(">");
	document.write("</div>");
}

function Quiz_GetFormattedNumber(nNumber, sStyle)
{
	if ("1" == sStyle)
		return nNumber.toString() + ":";
	else if("A" == sStyle)
		{
		var sA = "A";
		var cRepeats = Math.floor((nNumber - 1) / 26) + 1;
		var sChar = String.fromCharCode(sA.charCodeAt(0) + (nNumber - 1));
		var sNumber = "";
		while (cRepeats-- > 0)
			sNumber = sNumber + sChar;
		return sNumber + ":";
		}
	else if("a" == sStyle)
		{
		var sA = "a";
		var cRepeats = Math.floor((nNumber - 1) / 26) + 1;
		var sChar = String.fromCharCode(sA.charCodeAt(0) + (nNumber - 1));
		var sNumber = "";
		while (cRepeats-- > 0)
			sNumber = sNumber + sChar;
		return sNumber + ":";
		}
	else if("." == sStyle)
		return "&bull;";
	else if("" == sStyle)
		return "";
	else
		return "";
}

function Quiz_AddScore(oScore)
{
	this._scores.push(oScore);
}

function Quiz_GetPossiblePoints()
{
	var oQuestion = null;
	var aQuestions = this._questions;
	if (this._nPossiblePoints == 0)
		for (var nQuestion = 0; nQuestion < this._questions.length; nQuestion++)
			{
			var oQuestion = this._questions[nQuestion];
			this._nPossiblePoints += oQuestion.GetPossiblePoints();
			}
	return this._nPossiblePoints;
}

function Quiz_GetAwardedPoints()
{
	return this._rAwardedPoints;
}

function Quiz_GetPercentage()
{
	return this._nAwardedPercentage;
}

function Quiz_SetQuestionNumberStyle(sStyle)
{
	this._sQuestionNumberStyle = sStyle;
}

function Quiz_SetQuestionNumberCssClass(sCssClass)
{
	this._sQuestionNumberCssClass = sCssClass;
}

function Quiz_SetRequireAllGuesses(bRequireAll)
{
	this._bRequireAllGuesses = bRequireAll;
}

function Quiz_SetNeedAllGuessesHTML(sHTML)
{
	this._sNeedAllGuessesHTML = sHTML;
}

function Quiz_SetNeedAllGuessesCssClass(sCssClass)
{
	this._sNeedAllGuessesCssClass = sCssClass;
}

function Quiz_SetScoreByPercentage(bByPercentage)
{
	this._bByPercentage = bByPercentage;
}

function Question()
{
	this.AddAnswer = Quiz_AddAnswer;
	this.RandomizeAnswers = Quiz_RandomizeAnswers;
	this.Evaluate = Quiz_EvaluateAnswers;
	this.HasGuess = Quiz_HasGuess;
	
	this.GetPossiblePoints = Quiz_GetQuestionPossiblePoints;
	this.GetAwardedPoints = Quiz_GetQuestionAwardedPoints;
	this.SetPossiblePoints = Quiz_SetQuestionPossiblePoints;
	this.SetQuestionHTML = Quiz_SetQuestionHTML;
	this.SetQuestionCssClass = Quiz_SetQuestionCssClass;
	this.SetCorrectGuessHTML = Quiz_SetCorrectGuessHTML;
	this.SetCorrectGuessCssClass = Quiz_SetCorrectGuessCssClass;
	this.SetIncorrectGuessHTML = Quiz_SetIncorrectGuessHTML;
	this.SetIncorrectGuessCssClass = Quiz_SetIncorrectGuessCssClass;
	this.SetQuestionType = Quiz_SetQuestionType;
	this.SetQuestionNumber = Quiz_SetQuestionNumber;
	this.SetRequireAllOrNothing = Quiz_SetAllOrNothing;
	this.SetAnswerNumberStyle = Quiz_SetAnswerNumberStyle;
	this.SetAnswerNumberCssClass = Quiz_SetAnswerNumberCssClass;
	
	//internal use
	this._answers = new Array();
	this._sQuestionHTML = "";
	this._sQuestionCssClass = "";
	this._sCorrectHTML = "";
	this._sCorrectCssClass = "";
	this._sIncorrectHTML = "";
	this._sIncorrectCssClass = "";
	this._sQuestionType = "none";
	this._nNumber = 0;
	this._nPossiblePoints = 0;
	this._rAwardedPoints = 0;
	this,_bAnsweredAll = false;
	this._bAllOrNothing = false;
	this._sAnswerNumberStyle = "A";
	this._sAnswerNumberCssClass = "";
}

function Quiz_AddAnswer(oAnswer)
{
	if (this._sQuestionType == "TF" && this._answers.length > 2)
		throw "True/False questions may have only two possible answers."
	this._answers.push(oAnswer);
}

function Quiz_RandomizeAnswers()
{
	var aRandom = Quiz_GetRandomArray(this._answers.length);
	for (var n = 0; n < aRandom.length; n++)
		this._answers[n]._nNumber = aRandom[n];
}

function Quiz_EvaluateAnswers()
{
	this._rAwardedPoints = 0;
	var sQuestionID = "_quiz_Question_" + this._nNumber.toString();
	var sAnswerIDPrefix = sQuestionID + "_Answer_";
	var elmAnswer = null;
	if (this._sQuestionType != "MS") // use for TF and MC questions
		{
		for (var nAnswer = 0; nAnswer < this._answers.length; nAnswer++)
			{
			var oAnswer = this._answers[nAnswer];
			if (oAnswer._bCorrect == true)
				{
				elmAnswer = document.getElementById(sAnswerIDPrefix + oAnswer._nNumber.toString());
				break;
				}
			}
		if (elmAnswer != null)
			{
			if (elmAnswer.checked == true)
				this._rAwardedPoints = this._nPossiblePoints;
			}
		else
			{
			throw "No answers were identified as correct for question " + sQuestionID + " when the quiz was created.";
			}
		}
	else // MS question
		{
		var nCorrectAnswersChecked = 0;
		var nCorrectAnswersUnchecked = 0;
		var nPossibleCorrectAnswers = 0;
		var nIncorrectAnswersChecked = 0;
		var nPossiblePoints = 0;
		var nPointsAccumulated = 0
		for (var nAnswer = 0; nAnswer < this._answers.length; nAnswer++)
			{
			var oAnswer = this._answers[nAnswer];
			elmAnswer = document.getElementById(sAnswerIDPrefix + oAnswer._nNumber.toString());
			if (oAnswer._bCorrect == true)
				{
				nPossiblePoints += oAnswer._nPoints;
				nPossibleCorrectAnswers++;
				if (elmAnswer.checked == true)
					{
					nCorrectAnswersChecked++;
					nPointsAccumulated += oAnswer._nPoints;
					}
				else
					nCorrectAnswersUnchecked++;
				}
			else
				{
				if (elmAnswer.checked == true)
					nIncorrectAnswersChecked++
				}
			}
		if (nPossibleCorrectAnswers == 0)
			throw "No answers were identified as correct for question " + sQuestionID + " when the quiz was created.";
		if (nPossiblePoints  == 0)
			nPossiblePoints = 1;
		if (this._nPossiblePoints == 0)
			this._nPossiblePoints = nPossiblePoints;
		if (nIncorrectAnswersChecked > 0)
			this._rAwardedPoints = 0;
		else
			{
			if (this._bAllOrNothing == true)
				{
				if (nCorrectAnswersChecked == nPossibleCorrectAnswers)
					this._rAwardedPoints = this._nPossiblePoints;
				else
					this._rAwardedPoints = 0;
				this._bAnsweredAll = (this._rAwardedPoints > 0);
				}
			else
				{
				this._bAnsweredAll = (nCorrectAnswersUnchecked == 0);
				this._rAwardedPoints = (nPointsAccumulated / nPossiblePoints) * this._nPossiblePoints;
				}
			}
		}
}

function Quiz_HasGuess()
{
	var bHasGuess = false;
	var sQuestionID = "_quiz_Question_" + this._nNumber.toString();
	var sAnswerIDPrefix = sQuestionID + "_Answer_";
	for (var nAnswer = 0; nAnswer < this._answers.length; nAnswer++)
		{
		var sAnswerID = sAnswerIDPrefix + (nAnswer + 1).toString();
		var elmAnswerInput = document.getElementById(sAnswerID);
		if (elmAnswerInput != null)
			{
			if (elmAnswerInput.checked == true)
				{
				bHasGuess = true;
				break;
				}
			}
		}
	return bHasGuess;
}

function Quiz_SetQuestionHTML(sHTML)
{
	this._sQuestionHTML = sHTML;
}

function Quiz_SetQuestionCssClass(sCssClass)
{
	this._sQuestionCssClass = sCssClass;
}

function Quiz_SetCorrectGuessHTML(sHTML)
{
	this._sCorrectHTML = sHTML;
}

function Quiz_SetCorrectGuessCssClass(sCssClass)
{
	this._sCorrectCssClass = sCssClass;
}

function Quiz_SetIncorrectGuessHTML(sHTML)
{
	this._sIncorrectHTML = sHTML;
}

function Quiz_SetIncorrectGuessCssClass(sCssClass)
{
	this._sIncorrectCssClass = sCssClass;
}

function Quiz_SetQuestionType(sType)
{
	var sT = sType.toUpperCase();
	if (sT == "TF" || sT == "MC" || sT == "MS")
		if (sT == "TF" && this._answers.length > 2)
			throw "True/False questions may have only two possible answers."
		else
			this._sQuestionType = sType;
	else
		throw "Question type not supported"
}

function Quiz_SetQuestionNumber(nNumber)
{
	this._nNumber = nNumber;
}

function Quiz_SetQuestionPossiblePoints(nPoints)
{
	this._nPossiblePoints = nPoints;
}

function Quiz_GetQuestionPossiblePoints()
{
	if (this._nPossiblePoints == 0)
		{
		for (var nAnswer = 0; nAnswer < this._answers.length; nAnswer++)
			{
			var oAnswer = this._answers[nAnswer];
			if (oAnswer._bCorrect == true)
				{
				//	for Multiple Selection questions:
				//		add all possible correct answers to get the possible points
				//	for all other question types
				//		get the points of the correct answer with the most points (even though there should only be one correct answer)
				this._nPossiblePoints = (this._sQuestionType == "MS" ? this._nPossiblePoints + oAnswer._nPoints : Math.max(this._nPossiblePoints, oAnswer._nPoints));
				}
			}
		}
	return this._nPossiblePoints;
}

function Quiz_GetQuestionAwardedPoints()
{
	return this._rAwardedPoints;
}

function Quiz_SetAllOrNothing(bAllOrNothing)
{
	this._bAllOrNothing = bAllOrNothing;
}

function Quiz_SetAnswerNumberStyle(sStyle)
{
	this._sAnswerNumberStyle = sStyle;
}

function Quiz_SetAnswerNumberCssClass(sCssClass)
{
	this._sAnswerNumberCssClass = sCssClass;
}
	
function Answer()
{
	this.SetAnswerHTML = Quiz_SetAnswerHTML;
	this.SetAnswerCssClass = Quiz_SetAnswerCssClass;
	this.SetPointsForCorrectGuess = Quiz_SetPointsForCorrectGuess;
	this.SetAnswerNumber = Quiz_SetAnswerNumber;
	this.SetCorrect = Quiz_SetCorrect;
	
	//internal use
	this._SAnswerHTML = "";
	this._sAnswerCssClass = "";
	this._nPoints = 1;
	this._nNumber = 0;
	this._bCorrect = false;
}

function Quiz_SetAnswerHTML(sHTML)
{
	this._sAnswerHTML = sHTML;
}

function Quiz_SetAnswerCssClass(sCssClass)
{
	this._sAnswerCssClass = sCssClass;
}

function Quiz_SetPointsForCorrectGuess(nPoints)
{
	this._nPoints = nPoints;
}

function Quiz_SetAnswerNumber(nNumber)
{
	this._nNumber = nNumber;
}

function Quiz_SetCorrect(bCorrect)
{
	this._bCorrect = bCorrect;
}

function Score()
{
	this.SetScoreHTML = Quiz_SetScoreHTML;
	this.SetScoreCssClass = Quiz_SetScoreCssClass;
	this.SetMinScore = Quiz_SetMinScore;
	
	//internal use
	this._sScoreHTML = "";
	this._sScoreCssClass = "";
	this._rMinScore = 0;
}

function Quiz_SetScoreHTML(sHTML)
{
	this._sScoreHTML = sHTML;
}

function Quiz_SetScoreCssClass(sCssClass)
{
	this._sScoreCssClass = sCssClass;
}
				
function Quiz_SetMinScore(rPercentageOrPoints)
{
	this._rMinScore = rPercentageOrPoints;
}