/* Compacted by CK 2010 for www.manythngs.org
 * For code, go to hotpot.uvic.ca
 */
function Client(){this.min=false;if(document.getElementById){this.min=true};this.ua=navigator.userAgent;this.name=navigator.appName;this.ver=navigator.appVersion; 
this.mac=(this.ver.indexOf('Mac')!=-1);this.win=(this.ver.indexOf('Windows')!=-1);this.gecko=(this.ua.indexOf('Gecko')>1);if(this.gecko){this.geckoVer=parseInt(this.ua.substring(this.ua.indexOf('Gecko')+6,this.ua.length));if(this.geckoVer<20020000){this.min=false}}
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this.ie5mac=(this.ie&&this.mac&&(this.ieVer<6))}
var C=new Client();
function NavBtnOver(Btn){if(Btn.className!='NavButtonDown'){Btn.className='NavButtonUp'}}
function NavBtnOut(Btn){Btn.className='NavButton'}
function NavBtnDown(Btn){Btn.className='NavButtonDown'}
function FuncBtnOver(Btn){if(Btn.className!='FuncButtonDown'){Btn.className='FuncButtonUp'}}
function FuncBtnOut(Btn){Btn.className='FuncButton'}
function FuncBtnDown(Btn){Btn.className='FuncButtonDown'}
function FocusAButton(){if(document.getElementById('CheckButton1')!=null){document.getElementById('CheckButton1').focus()}
else{if(document.getElementById('CheckButton2')!=null){document.getElementById('CheckButton2').focus()}
else{document.getElementsByTagName('button')[0].focus()}}}
var topZ=1000;
function ShowMessage(Feedback){var Output=Feedback+'<br /><br />';document.getElementById('FeedbackContent').innerHTML=Output;var FDiv=document.getElementById('FeedbackDiv');topZ++;FDiv.style.zIndex=topZ;FDiv.style.top=TopSettingWithScrollOffset(30)+'px';FDiv.style.display='block';ShowElements(false,'input');ShowElements(false,'select');ShowElements(false,'object');ShowElements(true,'object','FeedbackContent');setTimeout("document.getElementById('FeedbackOKButton').focus()",50)}
function ShowElements(Show,TagName,ContainerToReverse){TopNode=document.getElementById(ContainerToReverse);var Els;if(TopNode!=null){Els=TopNode.getElementsByTagName(TagName)} else{Els=document.getElementsByTagName(TagName)}
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else{if(C.ie){if(C.ieVer<7){if(Show==true){Els[i].style.visibility='visible'}
else{Els[i].style.visibility='hidden'}}}}}}
function HideFeedback(){document.getElementById('FeedbackDiv').style.display='none';ShowElements(true,'input');ShowElements(true,'select');ShowElements(true,'object');if(Finished==true){Finish()}}
function PageDim(){this.W=600;this.H=400;this.W=document.getElementsByTagName('body')[0].clientWidth;this.H=document.getElementsByTagName('body')[0].clientHeight}
var pg=null;
function GetPageXY(El){var XY={x: 0,y: 0};while(El){XY.x+=El.offsetLeft;XY.y+=El.offsetTop;El=El.offsetParent}
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function GetScrollTop(){if(typeof(window.pageYOffset)=='number'){return window.pageYOffset}
else{if((document.body)&&(document.body.scrollTop)){return document.body.scrollTop}
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function GetViewportHeight(){if(typeof window.innerHeight!='undefined'){return window.innerHeight}
else{if(((typeof document.documentElement!='undefined')&&(typeof document.documentElement.clientHeight !=
'undefined'))&&(document.documentElement.clientHeight!=0)){return document.documentElement.clientHeight}
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function TopSettingWithScrollOffset(TopPercent){var T=Math.floor(GetViewportHeight()*(TopPercent/100));return GetScrollTop()+T;}
var InTextBox=false;
function SuppressBackspace(e){ 
if(InTextBox==true){return}
if(C.ie){thisKey=window.event.keyCode}
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var Suppress=false;if(thisKey==8){Suppress=true}
if(Suppress==true){if(C.ie){window.event.returnValue=false;	
window.event.cancelBubble=true}
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if(C.ie){document.attachEvent('onkeydown',SuppressBackspace);window.attachEvent('onkeydown',SuppressBackspace)}
else{if(window.addEventListener){window.addEventListener('keypress',SuppressBackspace,false)}}
function ReduceItems(InArray,ReduceToSize){var ItemToDump=0;var j=0;while (InArray.length>ReduceToSize){ItemToDump=Math.floor(InArray.length*Math.random());InArray.splice(ItemToDump,1)}}
function Shuffle(InArray){var Num;var Temp=new Array();var Len=InArray.length;var j=Len;for(var i=0;i<Len;i++){Temp[i]=InArray[i]}
for(i=0;i<Len;i++){Num=Math.floor(j * Math.random());InArray[i]=Temp[Num];for(var k=Num;k<(j-1);k++){Temp[k]=Temp[k+1]}
j--}
return InArray}
function WriteToInstructions(Feedback){document.getElementById('InstructionsDiv').innerHTML=Feedback}
function EscapeDoubleQuotes(InString){return InString.replace(/"/g,'&quot;')}
function TrimString(InString){var x=0;if(InString.length!=0){while ((InString.charAt(InString.length - 1)=='\u0020') || (InString.charAt(InString.length - 1)=='\u000A') || (InString.charAt(InString.length - 1)=='\u000D')){InString=InString.substring(0,InString.length - 1)}
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return InString}
else{return ''}}
function FindLongest(InArray){if(InArray.length<1){return -1}
var Longest=0;for(var i=1;i<InArray.length;i++){if(InArray[i].length>InArray[Longest].length){Longest=i}}
return Longest}
function IsCombiningDiacritic(CharNum){var Result=(((CharNum >= 0x0300)&&(CharNum <= 0x370))||((CharNum >= 0x20d0)&&(CharNum <= 0x20ff)));Result=Result || (((CharNum >= 0x3099)&&(CharNum <= 0x309a))||((CharNum >= 0xfe20)&&(CharNum <= 0xfe23)));return Result}
function IsCJK(CharNum){return ((CharNum >= 0x3000)&&(CharNum<0xd800))}
function ClearTextBoxes(){var NList=document.getElementsByTagName('input');for(var i=0;i<NList.length;i++){if((NList[i].id.indexOf('Guess')>-1)||(NList[i].id.indexOf('Gap')>-1)){NList[i].value=''}
if(NList[i].id.indexOf('Chk')>-1){NList[i].checked=''}}}
function Array_IndexOf(Input){var Result=-1;for(var i=0;i<this.length;i++){if(this[i]==Input){Result=i}}
return Result}
Array.prototype.indexOf=Array_IndexOf;
function RemoveBottomNavBarForIE(){if((C.ie)&&(document.getElementById('Reading')!=null)){if(document.getElementById('BottomNavBar')!=null){document.getElementById('TheBody').removeChild(document.getElementById('BottomNavBar'))}}}
var HPNStartTime=(new Date()).getTime();var SubmissionTimeout=30000;var Detail='';
function Finish(){if(document.store!=null){Frm=document.store;Frm.starttime.value=HPNStartTime;Frm.endtime.value=(new Date()).getTime();Frm.mark.value=Score;Frm.detail.value=Detail;Frm.submit()}}
var CurrQNum=0;var CorrectIndicator=':-)';var IncorrectIndicator='X';var YourScoreIs='Your score is ';var CompletedSoFar='Completed so far:';var ExerciseCompleted='You have completed the exercise.';var ShowCompletedSoFar=true;var ContinuousScoring=true;var CorrectFirstTime='Questions answered correctly first time: ';var ShowCorrectFirstTime=false;var ShuffleQs=false;var ShuffleAs=true;var DefaultRight='Correct!';var DefaultWrong='Not perfect yet. Please try again.';var QsToShow=16;var Score=0;var Finished=false;var Qs=null;var QArray=new Array();var ShowingAllQuestions=false;var ShowAllQuestionsCaption='Show all questions';var ShowOneByOneCaption='Show questions one by one';var State=new Array();var Feedback='';var TimeOver=false;var strInstructions='';var Locked=false;var strQuestionFinished='';
function CompleteEmptyFeedback(){var QNum,ANum;for(QNum=0;QNum<I.length;QNum++){if(I[QNum][2]!='3'){for(ANum=0;ANum<I[QNum][3].length;ANum++){if(I[QNum][3][ANum][1].length<1){if(I[QNum][3][ANum][2]>0){I[QNum][3][ANum][1]=DefaultRight}
else{I[QNum][3][ANum][1]=DefaultWrong}}}}}}
function SetUpQuestions(){var AList=new Array();
var QList=new Array();var i,j;Qs=document.getElementById('Questions');while (Qs.getElementsByTagName('li').length>0){QList.push(Qs.removeChild(Qs.getElementsByTagName('li')[0]))}
var DumpItem=0;if(QsToShow>QList.length){QsToShow=QList.length}
while (QsToShow<QList.length){DumpItem=Math.floor(QList.length*Math.random());for(j=DumpItem;j<(QList.length-1);j++){QList[j]=QList[j+1]}
QList.length=QList.length-1}
if(ShuffleQs==true){QList=Shuffle(QList)}
if(ShuffleAs==true){var As;for(var i=0;i<QList.length;i++){As=QList[i].getElementsByTagName('ol')[0];if(As!=null){AList.length=0;while (As.getElementsByTagName('li').length>0){AList.push(As.removeChild(As.getElementsByTagName('li')[0]))}
AList=Shuffle(AList);for(j=0;j<AList.length;j++){As.appendChild(AList[j])}}}}
for(i=0;i<QList.length;i++){Qs.appendChild(QList[i]);QArray[QArray.length]=QList[i]}
QArray[0].style.display='';for(i=1;i<QArray.length;i++){QArray[i].style.display='none'}		
SetQNumReadout();SetFocusToTextbox()}
function SetFocusToTextbox(){if(QArray[CurrQNum].getElementsByTagName('input')[0]!=null){QArray[CurrQNum].getElementsByTagName('input')[0].focus();if(document.getElementById('CharacterKeypad')!=null){document.getElementById('CharacterKeypad').style.display='block'}}
else{if(QArray[CurrQNum].getElementsByTagName('textarea')[0]!=null){QArray[CurrQNum].getElementsByTagName('textarea')[0].focus();	
if(document.getElementById('CharacterKeypad')!=null){document.getElementById('CharacterKeypad').style.display='block'}}
else{if(document.getElementById('CharacterKeypad')!=null){document.getElementById('CharacterKeypad').style.display='none'}}}}
function ChangeQ(ChangeBy){if(((CurrQNum+ChangeBy)<0)||((CurrQNum+ChangeBy) >= QArray.length)){return}
QArray[CurrQNum].style.display='none';CurrQNum+=ChangeBy;QArray[CurrQNum].style.display='';ShowSpecialReadingForQuestion();SetQNumReadout();SetFocusToTextbox()}
var HiddenReadingShown=false;
function ShowSpecialReadingForQuestion(){if(document.getElementById('ReadingDiv')!=null){if(HiddenReadingShown==true){document.getElementById('ReadingDiv').innerHTML=''}
if(QArray[CurrQNum]!=null){var Children=QArray[CurrQNum].getElementsByTagName('div');for(var i=0;i<Children.length;i++){if(Children[i].className=="HiddenReading"){document.getElementById('ReadingDiv').innerHTML=Children[i].innerHTML;HiddenReadingShown=true;if(document.getElementById('ShowMethodButton')!=null){document.getElementById('ShowMethodButton').style.display='none'}}}	}}}
function SetQNumReadout(){document.getElementById('QNumReadout').innerHTML=(CurrQNum+1)+' / '+QArray.length;if((CurrQNum+1) >= QArray.length){if(document.getElementById('NextQButton')!=null){document.getElementById('NextQButton').style.visibility='hidden'}}
else{if(document.getElementById('NextQButton')!=null){document.getElementById('NextQButton').style.visibility='visible'}}
if(CurrQNum <= 0){if(document.getElementById('PrevQButton')!=null){document.getElementById('PrevQButton').style.visibility='hidden'}}
else{if(document.getElementById('PrevQButton')!=null){document.getElementById('PrevQButton').style.visibility='visible'}}}
var I=new Array();I[0]=new Array();I[0][0]=100;I[0][1]='';I[0][2]='2';I[0][3]=new Array();I[0][3][0]=new Array('is','',1,100,1);I[0][3][1]=new Array('are','',0,0,1);I[0][3][2]=new Array('be','',0,0,1);I[0][3][3]=new Array('were','',0,0,1);I[1]=new Array();I[1][0]=100;I[1][1]='';I[1][2]='2';I[1][3]=new Array();I[1][3][0]=new Array('kinds','',1,100,1);I[1][3][1]=new Array('kind','',0,0,1);I[1][3][2]=new Array('can','',0,0,1);I[1][3][3]=new Array('many','',0,0,1);I[2]=new Array();I[2][0]=100;I[2][1]='';I[2][2]='2';I[2][3]=new Array();I[2][3][0]=new Array('light','',1,100,1);I[2][3][1]=new Array('right','',0,0,1);I[2][3][2]=new Array('might','',0,0,1);I[2][3][3]=new Array('white','',0,0,1);I[3]=new Array();I[3][0]=100;I[3][1]='';I[3][2]='2';I[3][3]=new Array();I[3][3][0]=new Array('have','',1,100,1);I[3][3][1]=new Array('has','',0,0,1);I[3][3][2]=new Array('is','',0,0,1);I[3][3][3]=new Array('was','',0,0,1);I[4]=new Array();I[4][0]=100;I[4][1]='';I[4][2]='2';I[4][3]=new Array();I[4][3][0]=new Array('die','',1,100,1);I[4][3][1]=new Array('dies','',0,0,1);I[4][3][2]=new Array('dead','',0,0,1);I[4][3][3]=new Array('dying','',0,0,1);I[5]=new Array();I[5][0]=100;I[5][1]='';I[5][2]='2';I[5][3]=new Array();I[5][3][0]=new Array('than','',1,100,1);I[5][3][1]=new Array('then','',0,0,1);I[5][3][2]=new Array('when','',0,0,1);I[5][3][3]=new Array('of','',0,0,1);I[6]=new Array();I[6][0]=100;I[6][1]='';I[6][2]='2';I[6][3]=new Array();I[6][3][0]=new Array('or','',1,100,1);I[6][3][1]=new Array('and','',0,0,1);I[6][3][2]=new Array('is','',0,0,1);I[6][3][3]=new Array('an','',0,0,1);I[7]=new Array();I[7][0]=100;I[7][1]='';I[7][2]='2';I[7][3]=new Array();I[7][3][0]=new Array('poison','',1,100,1);I[7][3][1]=new Array('penguin','',0,0,1);I[7][3][2]=new Array('portion','',0,0,1);I[7][3][3]=new Array('person','',0,0,1);I[8]=new Array();I[8][0]=100;I[8][1]='';I[8][2]='2';I[8][3]=new Array();I[8][3][0]=new Array('gives','',1,100,1);I[8][3][1]=new Array('given','',0,0,1);I[8][3][2]=new Array('giving','',0,0,1);I[8][3][3]=new Array('give','',0,0,1);I[9]=new Array();I[9][0]=100;I[9][1]='';I[9][2]='2';I[9][3]=new Array();I[9][3][0]=new Array('grows','',1,100,1);I[9][3][1]=new Array('goes','',0,0,1);I[9][3][2]=new Array('has','',0,0,1);I[9][3][3]=new Array('glows','',0,0,1);I[10]=new Array();I[10][0]=100;I[10][1]='';I[10][2]='2';I[10][3]=new Array();I[10][3][0]=new Array('keep','',1,100,1);I[10][3][1]=new Array('stop','',0,0,1);I[10][3][2]=new Array('begin','',0,0,1);I[10][3][3]=new Array('continue','',0,0,1);I[11]=new Array();I[11][0]=100;I[11][1]='';I[11][2]='2';I[11][3]=new Array();I[11][3][0]=new Array('smoking','',1,100,1);I[11][3][1]=new Array('smoke','',0,0,1);I[11][3][2]=new Array('have smoked','',0,0,1);I[11][3][3]=new Array('is smoking','',0,0,1);
function StartUp(){RemoveBottomNavBarForIE();if(QsToShow<2){document.getElementById('QNav').style.display='none'}
strInstructions=document.getElementById('InstructionsDiv').innerHTML;CompleteEmptyFeedback();SetUpQuestions();ClearTextBoxes();CreateStatusArray();if(document.location.search.length>0){if(ShuffleQs==false){var JumpTo=parseInt(document.location.search.substring(1,document.location.search.length))-1;if(JumpTo <= QsToShow){ChangeQ(JumpTo)}}}
ShowSpecialReadingForQuestion()}
function ShowHideQuestions(){FuncBtnOut(document.getElementById('ShowMethodButton'));document.getElementById('ShowMethodButton').style.display='none';if(ShowingAllQuestions==false){for(var i=0;i<QArray.length;i++){QArray[i].style.display=''}
document.getElementById('Questions').style.listStyleType='decimal';document.getElementById('OneByOneReadout').style.display='none';document.getElementById('ShowMethodButton').innerHTML=ShowOneByOneCaption;ShowingAllQuestions=true}
else{for(var i=0;i<QArray.length;i++){if(i!=CurrQNum){QArray[i].style.display='none'}}
document.getElementById('Questions').style.listStyleType='none';document.getElementById('OneByOneReadout').style.display='';document.getElementById('ShowMethodButton').innerHTML=ShowAllQuestionsCaption;ShowingAllQuestions=false;	}
document.getElementById('ShowMethodButton').style.display='inline'}
function CreateStatusArray(){var QNum,ANum;for(QNum=0;QNum<I.length;QNum++){if(document.getElementById('Q_'+QNum)!=null){State[QNum]=new Array();State[QNum][0]=-1;
State[QNum][1]=new Array();
for(ANum=0;ANum<I[QNum][3].length;ANum++){State[QNum][1][ANum]=0;}
State[QNum][2]=0;
State[QNum][3]=0;
State[QNum][4]=0;
State[QNum][5]='';}
else{State[QNum]=null}}}
function CheckMCAnswer(QNum,ANum,Btn){if(State[QNum].length<1){return}
Feedback=I[QNum][3][ANum][1];if(State[QNum][0]>-1){if(strQuestionFinished.length>0){Feedback+='<br />'+strQuestionFinished}
ShowMessage(Feedback);return}
Btn.style.display='none';State[QNum][2]++;State[QNum][3]+=I[QNum][3][ANum][3];State[QNum][1][ANum]=State[QNum][2];if(State[QNum][5].length>0){State[QNum][5]+=' | '}
State[QNum][5]+=String.fromCharCode(65+ANum);if(I[QNum][3][ANum][2]<1){Btn.innerHTML=IncorrectIndicator;if(Finished==false){WriteToInstructions(strInstructions)}	
var RemainingAnswer=FinalAnswer(QNum);if(RemainingAnswer>-1){State[QNum][2]++;		
CalculateMCQuestionScore(QNum);CalculateOverallScore();var QsDone=CheckQuestionsCompleted();if((ContinuousScoring==true)||(Finished==true)){Feedback+='<br />'+YourScoreIs+' '+Score+'%.'+'<br />'+QsDone;WriteToInstructions(YourScoreIs+' '+Score+'%.'+'<br />'+QsDone)}
else{WriteToInstructions(QsDone)}}}
else{Btn.innerHTML=CorrectIndicator;CalculateMCQuestionScore(QNum);var QsDone=CheckQuestionsCompleted();if(ContinuousScoring==true){CalculateOverallScore();if((ContinuousScoring==true)||(Finished==true)){Feedback+='<br />'+YourScoreIs+' '+Score+'%.'+'<br />'+QsDone;WriteToInstructions(YourScoreIs+' '+Score+'%.'+'<br />'+QsDone)}}
else{WriteToInstructions(QsDone)}}
Btn.style.display='inline';ShowMessage(Feedback);CheckFinished()}
function CalculateMCQuestionScore(QNum){var Tries=State[QNum][2]+State[QNum][4];
var PercentCorrect=State[QNum][3];var TotAns=GetTotalMCAnswers(QNum);var HintPenalties=State[QNum][4];if(State[QNum][0]<0){if(HintPenalties >= 1){State[QNum][0]=0}
else{if(TotAns==1){State[QNum][0]=1}
else{State[QNum][0]=((TotAns-((Tries*100)/State[QNum][3]))/(TotAns-1))}}
if((State[QNum][0]<0)||(State[QNum][0]==Number.NEGATIVE_INFINITY)){State[QNum][0]=0}}}
function GetTotalMCAnswers(QNum){var Result=0;for(var ANum=0;ANum<I[QNum][3].length;ANum++){if(I[QNum][3][ANum][4]==1){ 
Result++}}
return Result}
function FinalAnswer(QNum){var UnchosenAnswers=0;var FinalAnswer=-1;for(var ANum=0;ANum<I[QNum][3].length;ANum++){if(I[QNum][3][ANum][4]==1){ 
if(State[QNum][1][ANum]<1){ 
UnchosenAnswers++;FinalAnswer=ANum}}}
if(UnchosenAnswers==1){return FinalAnswer}
else{return -1}}
function CalculateOverallScore(){var TotalWeighting=0;var TotalScore=0;for(var QNum=0;QNum<State.length;QNum++){if(State[QNum]!=null){if(State[QNum][0]>-1){TotalWeighting+=I[QNum][0];TotalScore+=(I[QNum][0]*State[QNum][0])}}}
if(TotalWeighting>0){Score=Math.floor((TotalScore/TotalWeighting)*100)}
else{Score=100;}}
function CheckQuestionsCompleted(){if(ShowCompletedSoFar==false){return ''}
var QsCompleted=0;for(var QNum=0;QNum<State.length;QNum++){if(State[QNum]!=null){if(State[QNum][0] >= 0){QsCompleted++}}}
if(QsCompleted >= QArray.length){return ExerciseCompleted}
else{return CompletedSoFar+' '+QsCompleted+'/'+QArray.length+'.'}}
function CheckFinished(){var FB='';var AllDone=true;for(var QNum=0;QNum<State.length;QNum++){if(State[QNum]!=null){if(State[QNum][0]<0){AllDone=false}}}
if(AllDone==true){CalculateOverallScore();FB=YourScoreIs+' '+Score+'%.';if(ShowCorrectFirstTime==true){var CFT=0;for(QNum=0;QNum<State.length;QNum++){if(State[QNum]!=null){if(State[QNum][0] >= 1){CFT++}}}
FB+='<br />'+CorrectFirstTime+' '+CFT+'/'+QsToShow}
FB+='<br />'+ExerciseCompleted;WriteToInstructions(FB);Finished==true;TimeOver=true;Locked=true;Finished=true;Detail='<?xml version="1.0"?><hpnetresult><fields>';for(QNum=0;QNum<State.length;QNum++){if(State[QNum]!=null){if(State[QNum][5].length>0){Detail+='<field><fieldname>Question #'+(QNum+1)+'</fieldname><fieldtype>question-tracking</fieldtype><fieldlabel>Q '+(QNum+1)+'</fieldlabel><fieldlabelid>QuestionTrackingField</fieldlabelid><fielddata>'+State[QNum][5]+'</fielddata></field>'}}}
Detail+='</fields></hpnetresult>';setTimeout('Finish()',SubmissionTimeout)}}
var CaseSensitive=false;var ShowAlsoCorrect=true;var PleaseEnter='Please enter a guess,then check.';var HybridTries=2;var PartlyIncorrect='Your answer is partly incorrect.';var CorrectList='Correct answers:';var NextCorrect='Next correct letter is: ';var CurrBox=null;
function TrackFocus(BoxID){InTextBox=true;CurrBox=document.getElementById(BoxID)}
function LeaveGap(){InTextBox=false}
function TypeChars(Chars){if(CurrBox!=null){if(CurrBox.style.display!='none'){CurrBox.value+=Chars;CurrBox.focus()}}}
function CheckGuess(Guess,Answer,CaseSensitive,PercentCorrect,Feedback){this.Guess=Guess;this.Answer=Answer;this.PercentCorrect=PercentCorrect;this.Feedback=Feedback;if(CaseSensitive==false){this.WorkingGuess=Guess.toLowerCase();this.WorkingAnswer=Answer.toLowerCase()}
else{this.WorkingGuess=Guess;this.WorkingAnswer=Answer;				}
this.Hint='';this.HintPenalty=1/Answer.length;this.CorrectStart='';this.WrongMiddle='';this.CorrectEnd='';this.PercentMatch=0;this.DoCheck()}
function CheckGuess_DoCheck(){if(this.WorkingAnswer==this.WorkingGuess){this.PercentMatch=100;this.CorrectStart=this.Guess;return}
var i=0;var CorrectChars=0;while (this.WorkingAnswer.charAt(i)==this.WorkingGuess.charAt(i)){i++;CorrectChars++}
this.Hint=this.Answer.charAt(i);this.CorrectStart=this.Guess.substring(0,i);if(i<this.Guess.length){var j=this.WorkingGuess.length-1;var k=this.WorkingAnswer.length-1;while ((j>=i)&&((this.WorkingAnswer.charAt(k)==this.WorkingGuess.charAt(j))&&(CorrectChars<this.Answer.length))){CorrectChars++;j--;k--}
this.CorrectEnd=this.Guess.substring(j+1,this.Guess.length);this.WrongMiddle=this.Guess.substring(i,j+1)}
if(TrimString(this.WrongMiddle).length<1){this.WrongMiddle='_'}
if(CorrectChars<this.Answer.length){this.PercentMatch=Math.floor(100*CorrectChars)/this.Answer.length}
else{this.PercentMatch=Math.floor((100*CorrectChars)/this.Guess.length)}	}
CheckGuess.prototype.DoCheck=CheckGuess_DoCheck;
function CheckAnswerArray(CaseSensitive){this.CaseSensitive=CaseSensitive;this.Answers=new Array();this.Score=0;this.Feedback='';this.Hint='';this.HintPenalty=0;this.MatchedAnswerLength=1;this.CompleteMatch=false;this.MatchNum=-1}
function CheckAnswerArray_AddAnswer(Guess,Answer,PercentCorrect,Feedback){this.Answers.push(new CheckGuess(Guess,Answer,this.CaseSensitive,PercentCorrect,Feedback))}
CheckAnswerArray.prototype.AddAnswer=CheckAnswerArray_AddAnswer;
function CheckAnswerArray_ClearAll(){this.Answers.length=0}
CheckAnswerArray.prototype.ClearAll=CheckAnswerArray_ClearAll;
function CheckAnswerArray_GetBestMatch(){for(var i=0;i<this.Answers.length;i++){if(this.Answers[i].PercentMatch==100){this.Feedback=this.Answers[i].Feedback;this.Score=this.Answers[i].PercentCorrect;this.CompleteMatch=true;this.MatchNum=i;return}}
var PercentMatch=0;var BestMatch=-1;for(i=0;i<this.Answers.length;i++){if((this.Answers[i].PercentMatch>PercentMatch)&&(this.Answers[i].PercentCorrect==100)){BestMatch=i;PercentMatch=this.Answers[i].PercentMatch}}
if(BestMatch>-1){this.Score=this.Answers[BestMatch].PercentMatch;this.Feedback=PartlyIncorrect+' ';this.Feedback+='<span class="PartialAnswer">'+this.Answers[BestMatch].CorrectStart;this.Feedback+='<span class="Highlight">'+this.Answers[BestMatch].WrongMiddle+'</span>';this.Feedback+=this.Answers[BestMatch].CorrectEnd+'</span>';this.Hint='<span class="PartialAnswer">'+this.Answers[BestMatch].CorrectStart;this.Hint+='<span class="Highlight">'+this.Answers[BestMatch].Hint+'</span></span>';this.HintPenalty=this.Answers[BestMatch].HintPenalty}
else{this.Score=0;this.Feedback=''}}
CheckAnswerArray.prototype.GetBestMatch=CheckAnswerArray_GetBestMatch;
function CheckShortAnswer(QNum){if((State[QNum].length<1)||(Finished==true)){return}
if(State[QNum][0]>-1){return}
var G=TrimString(document.getElementById('Q_'+QNum+'_Guess').value);if(G.length<1){ShowMessage(PleaseEnter);return}
State[QNum][2]++;var CA=new CheckAnswerArray(CaseSensitive);CA.ClearAll();for(var ANum=0;ANum<I[QNum][3].length;ANum++){CA.AddAnswer(G,I[QNum][3][ANum][0],I[QNum][3][ANum][3],I[QNum][3][ANum][1])}
CA.GetBestMatch();if(State[QNum][5].length>0){State[QNum][5]+=' | '}
if(CA.MatchNum>-1){State[QNum][5]+=String.fromCharCode(65+CA.MatchNum)}
else{State[QNum][5]+=G}
State[QNum][3]+=CA.Score;if(CA.CompleteMatch==true){if(CA.Score==100){CalculateShortAnsQuestionScore(QNum);var QsDone=CheckQuestionsCompleted();if(ShowAlsoCorrect==true){var AlsoCorrectList=GetCorrectList(QNum,G,false);if(AlsoCorrectList.length>0){CA.Feedback+='<br />'+CorrectList+'<br />'+AlsoCorrectList}}	
if(ContinuousScoring==true){CalculateOverallScore();CA.Feedback+='<br />'+YourScoreIs+' '+Score+'%.'+'<br />'+QsDone;WriteToInstructions(YourScoreIs+' '+Score+'%.'+'<br />'+QsDone)}
else{WriteToInstructions(QsDone)}
ShowMessage(CA.Feedback);ReplaceGuessBox(QNum,G);CheckFinished();return}}
if(CA.Feedback.length<1){CA.Feedback=DefaultWrong}
if(Finished==false){WriteToInstructions(strInstructions)}	
ShowMessage(CA.Feedback);if(State[QNum][2] >= HybridTries){SwitchHybridDisplay(QNum)}}
function CalculateShortAnsQuestionScore(QNum){var Tries=State[QNum][2]+State[QNum][4];
var PercentCorrect=State[QNum][3];var HintPenalties=State[QNum][4];if(State[QNum][0]<0){if(HintPenalties >= 1){State[QNum][0]=0}
else{State[QNum][0]=(PercentCorrect/(100*Tries))}
if(State[QNum][0]<0){State[QNum][0]=0}}}
function SwitchHybridDisplay(QNum){if(document.getElementById('Q_'+QNum+'_Hybrid_MC')!=null){document.getElementById('Q_'+QNum+'_Hybrid_MC').style.display='';if(document.getElementById('Q_'+QNum+'_SA')!=null){document.getElementById('Q_'+QNum+'_SA').style.display='none'}}}
function GetCorrectArray(QNum){var Result=new Array();for(var ANum=0;ANum<I[QNum][3].length;ANum++){if(I[QNum][3][ANum][2]==1){ 
Result.push(I[QNum][3][ANum][0])}}	
return Result}
function GetCorrectList(QNum,Answer,IncludeAnswer){var As=GetCorrectArray(QNum);var Result='';for(var ANum=0;ANum<As.length;ANum++){if((IncludeAnswer==true)||(As[ANum]!=Answer)){Result+=As[ANum]+'<br />'}}
return Result}
function GetFirstCorrectAnswer(QNum){var As=GetCorrectArray(QNum);if(As.length>0){return As[0]}
else{return ''}}
function ReplaceGuessBox(QNum,Ans){if(document.getElementById('Q_'+QNum+'_SA')!=null){var El=document.getElementById('Q_'+QNum+'_SA');while (El.childNodes.length>0){El.removeChild(El.childNodes[0])}
var A=document.createElement('span');A.setAttribute('class','Answer');var T=document.createTextNode(Ans);A.appendChild(T);El.appendChild(A)}}
function ShowAnswers(QNum){if((State[QNum].length<1)||(Finished==true)){return}
var Ans=GetCorrectList(QNum,'',false);Ans=CorrectList+'<br />'+Ans;ShowMessage(Ans);if(State[QNum][0]<1){State[QNum][0]=0}
var FirstAns=GetFirstCorrectAnswer(QNum);ReplaceGuessBox(QNum,FirstAns);var QsDone=CheckQuestionsCompleted();if(ContinuousScoring==true){CalculateOverallScore();WriteToInstructions(YourScoreIs+' '+Score+'%.'+'<br />'+QsDone)}
CheckFinished()}