//Quiz Structure File

var perPage = 0; 
var n1 = 109; 
var n2 = 13;
var qsParm = []; 

function qs() {
	var query = window.location.search.substring(1); 
	var parms = query.split('&'); 
	
	for (var i=0; i<parms.length; i++) {
		var pos = parms[i].indexOf('='); 
		
			if (pos > 0) {
				var key = parms[i].substring(0,pos); var val = parms[i].substring(pos+1); 
				qsParm[key] = val;
				}
	}
} 

qsParm['qnum'] = 0; 
qsParm['cor'] = 0; 
qsParm['fin'] = 0; 
qs(); 
var qnum = qsParm['qnum']; 
var cor = qsParm['cor'];
cor=cor%n1;
var pageLoaded = 0; 

window.onload = function() {pageLoaded = 1;};

function loaded(i,f) {
	if (document.getElementById && document.getElementById(i) != null) f(); 
		else if (!pageLoaded) setTimeout('loaded(\''+i+'\','+f+')',100);
	} 
	loaded('quiz'+qpp,loadQuiz);

function loadQuiz() {
	if (qnum>=quizArray.length) displayResult(); 
		else {
			displayQuiz(ent = document.getElementById('quiz1'),qnum++);
			if ((ent = document.getElementById('quiz2')) && qnum<quizArray.length)  displayQuiz(ent,qnum++); 
				var newB = document.createElement("button"); 
				newB.style.styleFloat = 'right'; 
				newB.style.cssFloat = 'right';
				newB.onclick = function() {nextPage(qnum);return false;}; 
				var newTb = document.createTextNode('Next Page'); 
				newB.appendChild(newTb); 
				ent.appendChild(newB);
		}
}

function displayQuiz(ent,qnum) {
	perPage++; 
	var qna = quizArray[qnum].split('~'); 
	var newF = document.createElement("form"); 
	var newDq = document.createElement("div"); 
	newDq.className = 'question'; 
	newDq.appendChild(document.createTextNode(Number(qnum+1)+ '. ' +qna[2])); 
	newF.appendChild(newDq); 
	newDq = document.createElement("div"); 
	newDq.className = 'answers'; 
	for (var i = 3; qna[i] != null && qna[i] != ''; i++) {
		var newDa = document.createElement("label"); 
		newDa.htmlFor = 'a'+qnum+i; 
		/*@cc_on @if (@_jscript) var newR = document.createElement("<input name='a"+qnum+"'>"); @else */ 
		var newR = document.createElement("input"); 
		newR.name = 'a'+qnum; 
		/* @end @*/ 
		newR.type = 'radio'; 
		newR.id = 'a'+qnum+i; 
		newR.value = i; 
		newDa.appendChild(newR); 
		newDa.appendChild(document.createTextNode(' '+qna[i]+' ')); 
		newDq.appendChild(newDa);
	} 
	newF.appendChild(newDq); 
	document.getElementById('quiz'+perPage).appendChild(newF);
}

function displayResult() {
	var newP = document.createElement("p");
	newP.style.textAlign = 'center'; 
	var newB = document.createElement("b"); 
	newB.appendChild(document.createTextNode('Congratulations.')); 
	newB.appendChild(document.createElement("br")); 
	newB.appendChild(document.createTextNode(' You have completed the quiz.')); 
	newP.appendChild(newB); 
	newP.appendChild(document.createElement("br")); 
	newP.appendChild(document.createElement("br")); 
	//newP.appendChild(document.createTextNode('You answered ' + cor + ' of the ' + qnum + ' questions correctly.')); 
	newP.appendChild(document.createTextNode('Answers:')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('1. True')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('2. False')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('3. False')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('4. True')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('5. False')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('6. True')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('7. False')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('8. False')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('9. True')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createTextNode('10. False')); 
	newP.appendChild(document.createElement("br"));
	newP.appendChild(document.createElement("br"));
	document.getElementById('quiz1').appendChild(newP); var newC = document.createElement("button"); 
	newC.style.styleFloat = 'right'; 
	newC.onclick = function() {cor = 0; nextPage(0);return false;}; 
	newC.appendChild(document.createTextNode('Try Again?')); 
	document.getElementById('quiz1').appendChild(newC);
	
	var newLink=document.createElement('a');
	newLink.setAttribute('href','parAns.html');
	newLink.setAttribute('target','_blank');
	newLink.appendChild(document.createElement("br"));
	newLink.appendChild(document.createElement("br"));
	var linkText=document.createTextNode('Why are the answers like that? Click here to find out.');
	newLink.appendChild(linkText);
	document.getElementById('quiz1').appendChild(newLink);
}

function checkAnswer(e,b,g,q){
	var a = -1; 
	var x = (b%n2) + 2; 
	for (var i=3; document.getElementById(e+i); i++) {
		if (document.getElementById(e+i).checked) {
			a = i-3;
		}
	} 
	var c = (g%x); 
	return a == c?1:0;
}

function nextPage(qnum) {
	for (var i=qnum-perPage; i < qnum; i++) {
		var qna = quizArray[i].split('~'); 
		cor += checkAnswer('a'+i,qna[1],qna[0],i);
	} 
	var thispage = self.location.href; 
	var www = thispage.lastIndexOf('?'); 
	if (www != -1) thispage = thispage.substr(0,www); 
	var p = Math.floor((Math.random() * 8) + 2); 
	var m = (p * n1) +cor; 
	var nxt = thispage + '?qnum='+ qnum +'&cor='+m; 
	if (qnum >= quizArray.length) nxt += '&fin=1'; 
	top.location.href = nxt;
}