// JavaScript Document
<!-- For generic DW Functions -->
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

//Global Variables
var xmldocu, targetTag, inDepth, newImg, msg, req, cookiename;
var cookCounter = 0;


// JavaScript Document
// function used to load XML into browsers.
function loadXMLDoc(xmldocu, div, targetTag, cssStyle, newImg)
{
var xmlDoc;
// code for IE
	if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = function(){
			 if (req.readyState == 4) {
			 // only if "OK"
				if (req.status == 200) {
					var msg = getMessage(xmldocu, targetTag, 0, newImg);
					document.getElementById(div).innerHTML = msg;
						var newSS=document.createElement('link');
						newSS.rel='stylesheet';
						newSS.href=(cssStyle);
						newSS.type="text/css";
						document.getElementsByTagName("head")[0].appendChild(newSS);
						retrieveLastDrop(xmldocu,newImg);
				 } else {
					alert("There was a problem retrieving the XML data:\n" + req.statusText);
				 }
			}
		}
        req.open("GET", xmldocu, true);
        req.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        //isIE = true;
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = function(){
				 if (req.readyState == 4) {
				 // only if "OK"
					if (req.status == 200) {
						var msg = getMessage(xmldocu, targetTag, 0,newImg);
						document.getElementById(div).innerHTML = msg;
							var newSS=document.createElement('link');
							newSS.rel='stylesheet';
							newSS.href=(cssStyle);
							newSS.type="text/css";
							document.getElementsByTagName("head")[0].appendChild(newSS);
							retrieveLastDrop(xmldocu,newImg);
					 } else {
						alert("There was a problem retrieving the XML data:\n" + req.statusText);
					 }
				}
			}
            req.open("GET", xmldocu, true);
            req.send();
        }
    }
}


// Written by Chris Chia. Rights Reserved
// main function used to provide the logic for
// retrieving the xml and displaying the results
function getMessage(xmldocu, targetTag, inDepth, newImg){
var msg = "";
var divId = "";
var classCss;
var childNValue; 
var targetWin;
var xmlDoc = req.responseXML;
cleanWhitespace(xmlDoc);
var node = xmlDoc.getElementsByTagName(targetTag)[0];
	for (var x = 0; x < node.childNodes.length; x++){
			
			var childNode = node.childNodes[x];
			
			if(childNode.childNodes.length == 1){
						//msg += x;
						//msg += (" "+inDepth);
						classCss = (inDepth == 0)? "firstLevelHeader" : "thirdlevelLink";
						childNValue = fnReplace(childNode.childNodes[0].nodeValue, newImg);
						targetWin = (childNode.getAttributeNode('target'))? "target='"+childNode.attributes.getNamedItem("target").value+"'" : "";
						msg += repeat(inDepth, "&nbsp;&nbsp;&nbsp;");
						msg += "<img src='page.png'> ";
						msg += "<a href='"+childNode.attributes.getNamedItem("info").value+"' ";
						msg += targetWin;
						msg += " class='"+classCss+"'>";
						msg += (childNValue);
						msg += "</a><br>";
			}else if(childNode.childNodes.length > 1){
						//msg += x;
						//msg += (" "+inDepth);
						var parentNodeValue = childNode.parentNode.tagName;
						classCss = (inDepth == 0)? "firstLevelHeader" : (inDepth == 1)? "secLevelBold": "";
						childNValue = fnReplace(childNode.childNodes[0].nodeValue, newImg);
						divId = childNode.tagName;
						targetWin = (childNode.getAttributeNode('target'))? "target='"+childNode.attributes.getNamedItem("target").value+"'" : "";
						msg += repeat(inDepth, "&nbsp;&nbsp;&nbsp;");
						msg += "<span id='img"+divId+"'>";
						msg += "<a href='#' onclick=\"getMessage2('"+xmldocu+"','"+divId+"','"+(parseInt(inDepth)+1)+"','"+newImg+"'); setCookArr(cookiename,'"+divId+"',365);setCook('"+divId+"','"+(parseInt(inDepth)+1)+"',365, '"+parentNodeValue+"');\">";
						msg += "<img src='plus.png' border='0'></a></span> ";
						msg += "<a href='"+childNode.attributes.getNamedItem("info").value+"' "
						msg += targetWin;
						msg += " class='"+classCss+"'>";
						msg += (childNValue);
						msg += "</a><br>";
						msg += "<span id='"+divId+"'>";
						msg += "</span>";
			}
	}
	delete xmlDoc;
	
	return msg;
}



//function used to replace certain symbols in the xml
//for adjusting the layout format.
function fnReplace(str, newImg){
	var singleSpace = /_/g;
	var singleBreak = /#/g;
	var singleImg 	= /:new:/g;
	str = str.replace(singleSpace, '&nbsp;');
	str = str.replace(singleBreak, '<br>');
	str = str.replace(singleImg, '<img src="'+newImg+'" border="0">');
	return str;
}


//function used to repeat a word such as "&nbsp;"
//for adjusting the layout format.
function repeat(i, word){
	var msg1="";
	for(var x=0; x< i; x++){
		msg1 += word;
	}
	return msg1;
}

//additional function used to extend the function 'getMessage'
//by going further into the xml and retrieving the data 
//by providing the tagname and level of Depth as arguement.
function getMessage2(xmldocu, targetTag, inDepth, newImg){
	var msg = getMessage(xmldocu, targetTag, inDepth, newImg);
	var objTarget = document.getElementById(targetTag);
	
	if(objTarget.innerHTML != ''){
		document.getElementById(targetTag).innerHTML = '';
		var objImg = document.getElementById('img'+targetTag).innerHTML;
		document.getElementById('img'+targetTag).innerHTML = (objImg.replace('minus', 'plus'));
	}else{
		document.getElementById(targetTag).innerHTML = msg;
		var objImg = document.getElementById('img'+targetTag).innerHTML;
		document.getElementById('img'+targetTag).innerHTML = (objImg.replace('plus', 'minus'));
	}
}

//function used to load at body startup
function bodyLoad(xmldocu, div, targetTag, cssStyle, newImg){
	var splitname = xmldocu.split("/");
	cookiename = splitname[0];
	xmldocu = xmldocu;
	targetTag = targetTag;
	inDepth = cssStyle;
	newImg = newImg;	
	loadXMLDoc(xmldocu, div, targetTag, cssStyle, newImg);
}


var notWhitespace = /\S/;

//remove whitespace in ie
function cleanWhitespace(node) {
	for (var x = 0; x < node.childNodes.length; x++) { //.childNodes
		var childNode = node.childNodes[x]
		if ((childNode.nodeType == 3)&&(!notWhitespace.test(childNode.nodeValue))) {
			// that is, if it's a whitespace text node
			node.removeChild(node.childNodes[x])
			x--
		}
		if (childNode.nodeType == 1) {
			// elements can have text child nodes of their own
			cleanWhitespace(childNode)
		}
	}
}



//cookie generation function written for sidm
function getCookie(c_name){
	
	if (document.cookie.length>0){
	  c_start=document.cookie.indexOf(c_name + "=");
	  	if (c_start!=-1){ 
			c_start=c_start + c_name.length+1; 
			c_end=document.cookie.indexOf(";",c_start);
			if (c_end==-1) c_end=document.cookie.length;
				return unescape(document.cookie.substring(c_start,c_end));
		} 
	}
	return "";
}

// set Cookie and the expiry days
function setCookie(c_name,value,expiredays){
	var exdate=new Date();
	exdate.setDate(expiredays);
	var expirystring = ((expiredays=="") ? "" : ";expires="+exdate.toGMTString());
	document.cookie=c_name+ "=" +escape(value)+expirystring;
}

// Set cookie and value
function setCook(targetName1, targetValue1, days, parentNodeValue){
	var objName1=getCookie(targetName1);
		if (objName1 != ""){
			//alert(targetName1+" set none");
			setCookie(targetName1,'',-1);
		}else if (objName1 == ""){
			//alert(targetName1+" set!!!!");
			//setCookie(targetName,'',-1);
			setCookie(targetName1, targetValue1, days);
		}
	var objParent1 = getCookie((parentNodeValue+"parent"));
		if (objParent1 != ""){
			var insert = true;
			var objArr1 = new Array();
			objArr1 = objParent1.split(":");
			for(var x=0; x<objArr1.length; x++){
				if(objArr1[x] == targetName1){
					insert = false;  //needed to be inserted
					break;
				}
			}
			if(insert == true){
				objArr1[objArr1.length] = targetName1;
			}
			
			var cookieArr = objArr1.join(":");
			setCookie((parentNodeValue+"parent"),'',-1);
			setCookie((parentNodeValue+"parent"),(cookieArr),days);
		}else if(objParent1 == ""){
			setCookie((parentNodeValue+"parent"), targetName1, days);  //topic3parent, topicsub1
		}
}


//Cookie Function to retrieve and restore the last opened dropdown list
function retrieveLastDrop(xmldocu,newImg){
	// cookie must be valid and not empty
	if (document.cookie.length>0){
		var cookieArr = getCookie(cookiename);
		//alert(cookieArr);
		var objArr = new Array();
		objArr = cookieArr.split(":");
		for(var x=0; x<objArr.length; x++){
			var objCookie=document.cookie.indexOf(objArr[x]);
			var divValue = objArr[x];
			var inDepthValue = getCookie(objArr[x]);
		  	if(objCookie != -1){
				getMessage2(xmldocu, divValue, inDepthValue, newImg);	
				//alert("getMessage2("+xmldocu+", "+divValue+", "+inDepthValue+", "+newImg+")");
			}

	  	}
	}
}


//Create Cookie Array
function setCookArr(targetName, targetValue, days){
	var objName=document.cookie.indexOf(targetName);
	var cookieArr = getCookie(targetName);
	var trigger = false;
	
	var parentChild = getCookie(targetValue+"parent");
	var parentTrigger;
	if (objName > -1){
		var cookArr1 = new Array();
		cookArr1 = cookieArr.split(":");
		
		parentTrigger = (parentChild != '')? true : false;
		
		if (parentTrigger == true){
			var parentChildArr = new Array();
			parentChildArr = parentChild.split(":");  //all these are childs
		}
		for(var x=0; x< cookArr1.length; x++){
			if(cookArr1[x] == targetValue){
				trigger = true;
				cookArr1.splice(x,1);
			}
			if (parentTrigger == true){
				for(var y=0; y<parentChildArr.length; y++){
					if(cookArr1[x] == parentChildArr[y]){
							trigger = true;
							cookArr1.splice(x,1);
					}
				}
			}
		}
		if(trigger == false){
			cookArr1[cookArr1.length] = targetValue;
		}
		var cookieArr = cookArr1.join(":");
		//alert("--"+cookieArr);
		setCookie(targetName,'',-1);
		if(cookArr1.length >= 1){
			setCookie(targetName,(cookieArr),365);
		}
		
	}else if (objName == -1){
		setCookie(targetName,targetValue,365);
	}
	cookieArr = getCookie(targetName);
	//alert(cookieArr);
}