/*	Simple Javascript Quiz Version 1.1
	Copyright (c) 2004-2007 CS Truter
	Written by Christoff Truter
	email: Christoff@cstruter.com - (Please let me know if you intend to use the script) */
	
// Include cookies js file

document.write('<script language="javascript" src="./cookies.js"></script>');

// Arrays used in generating the quiz

var Questions = new Array();
var Potential_Answers = new Array();
var cookieValue = new Array();
var Explain = new Array();
var xmlObj;
var urlQ;
var urlA;
// Timer function added 23/4/09 map/i-Seven
var now = new Date();
var startTime = now.getTime()


// How many entries will be displayed per page

var perb = 13;
getXmlUrls();

if (document.all)
{
	loadXML = function(file)
	{
		var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
		xmlDoc.async="false";
		xmlDoc.load(file);
		xmlObj=xmlDoc.documentElement;
	}

	fetchQuestions = function()
	{
		loadXML(urlQ);
		for (var i = 0; i < xmlObj.childNodes.length; i++)
		{
			Questions[i]=xmlObj.childNodes[i].childNodes(0).firstChild.text;
			Potential_Answers[i] = new Array();

			for (q=0;q<(xmlObj.childNodes[i].childNodes.length-1);q++)
			{
				Potential_Answers[i][q]=xmlObj.childNodes[i].childNodes(q+1).firstChild.text;
			}
		}
	}

	fetchAnswers = function()
	{
		loadXML(urlA);
		for (i=0;i<xmlObj.childNodes.length;i++)
		{
			Answers[i]=xmlObj.childNodes[i].childNodes(0).firstChild.text;
			Explain[i]=xmlObj.childNodes[i].childNodes(1).firstChild.text;
		}
	}
}
else
{
	loadXML = function(file)
	{
		{
			try{
				var xmlDoc = document.implementation.createDocument("","",null);
				xmlDoc.async=false;
				xmlDoc.load(file);		
			}catch(e){
			 	// for Safari
             	xmlDoc = new XMLHttpRequest();
             	xmlDoc.open("GET", file, false);
             	xmlDoc.send();
            	 xmlDoc=xmlDoc.responseXML;
			}
			xmlObj = xmlDoc.getElementsByTagName("ANSWERS");
		}
	}
	
	fetchQuestions = function()
	{
		loadXML( urlQ );
		for(var i=0; i<xmlObj.length; i++) 
		{
			Questions[i] = xmlObj[i].getElementsByTagName("QUESTION")[0].childNodes[0].nodeValue;
			Potential_Answers[i] = new Array();
			
			for (q=0;q<((xmlObj[i].childNodes.length-1)/2)-1;q++)
			{
				Potential_Answers[i][q] = xmlObj[i].getElementsByTagName("ANSWER")[q].childNodes[0].nodeValue;				
			}
		}
	}

	fetchAnswers = function()
	{
		loadXML( urlA );
		for (i=0;i<xmlObj.length;i++)
		{
			Answers[i]=xmlObj[i].getElementsByTagName("ANSWER")[0].childNodes[0].nodeValue;
			Explain[i]=xmlObj[i].getElementsByTagName("EXPLANATION")[0].childNodes[0].nodeValue;
		}
	}
}

function getXmlUrls(){
	var qs = new Querystring()
	var qname = qs.get("qname")
	urlQ = './questions.xml?openview&RestrictToCategory=' + qname + '&art=q';
	urlA = './answers.xml?openview&RestrictToCategory=' + qname + '&art=a'  ;
}


/* Client-side access to querystring name=value pairs
	Version 1.2.3
	22 Jun 2005
	Adam Vandenberg
*/
function Querystring(qs) { // optionally pass a querystring to parse
	this.params = new Object()
	this.get=Querystring_get
	
	if (qs == null)
		qs=location.search.substring(1,location.search.length)
	if (qs.length == 0) return

// Turn <plus> back to <space>
// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ')
	var args = qs.split('&') // parse out name/value pairs separated via &
	
// split out each name=value pair
	for (var i=0;i<args.length;i++) {
		var value;
		var pair = args[i].split('=')
		var name = unescape(pair[0])

		if (pair.length == 2)
			value = unescape(pair[1])
		else
			value = name
		
		this.params[name] = value
	}
}

function Querystring_get(key, default_) {
	// This silly looking line changes UNDEFINED to NULL
	if (default_ == null) default_ = null;
	
	var value=this.params[key]
	if (value==null) value=default_;
	
	return value
}