var webstandard = false;
var plusSign = "<img src='/img/icon-plus.png' border='0' />";
var minusSign = "<img src='/img/icon-minus.png' border='0' />";
var testDisplay = true;

function getXMLHTTP() {
	var xmlHttp;
	try {  
		xmlHttp=new XMLHttpRequest();
		webstandard = true;
		if (xmlHttp.overrideMimeType)  xmlHttp.overrideMimeType('text/xml')
		
	} catch (e) {
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");

		} catch (e) {
			try {
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");

			} catch (e) {
				alert( "Unable to continue - Your browser does not support AJAX." );
				return false;
			}
		}	
	}
	return xmlHttp;
}

function makeRequest(url, targetSpan, doCount, expandAll, restrictToState) {
//From w3schools - makes the proper request - after being modified for IE 7...
	var design_request = getXMLHTTP();
	if( typeof design_request == "boolean" )  return false
	
	design_request.onreadystatechange = function() { processDesign(design_request, targetSpan, doCount, expandAll, url, restrictToState); };
	design_request.open('GET', url + "?ReadDesign", true);
	design_request.send(null);
}


function processDesign(design_request, targetSpan, doCount, expandAll, url, restrictToState) {
/*	Charles F. Phillips
	01/27/2007
Once we're sure we have a valid design request, then we mae an entries request.
*/
	if (design_request.readyState == 4) {
		if (design_request.status == 200) {

			var entries_request = getXMLHTTP();
			if( typeof entries_request == "boolean" )  return false
				
			entries_request.onreadystatechange = function() { processEntries(design_request, entries_request, targetSpan, doCount, expandAll); };
			entries_request.open('GET', url + "?ReadViewEntries&PreFormat&ExpandView&RestrictToCategory=" + restrictToState + "&Count=-1", true);
			entries_request.send(null);

		} else {
			alert('There was a problem with the entries request.');
		}
	}
}


function processEntries(design_request, entries_request, targetSpan, doCount, expandAll) {
/*	Charles F. Phillips
	01/27/2007
	design_request, - is from the first request generated above
	entries_request, - is from the second request generated above
	targetSpan - allows us to name the spans dynaically so that we can have 
		more than one view on the page and preserve the namespace
	doCount - determines if we will post the child and descendants counts
	expandAll - determines if we post the categories opened or closed
*/	
	if (entries_request.readyState == 4) {
		if (entries_request.status == 200) {
			myView = document.getElementById(targetSpan)
			if (myView) {
				
				var XMLEntriesDoc = entries_request.responseXML
				//Parsing the xml document returned from the Notes view, we get the viewentries
				var root_entries = XMLEntriesDoc.getElementsByTagName("viewentries").item(0);
				//If there is no node then set a status message and leave
				if (!root_entries) {myView.innerHTML="No documents found"; return}
				
				var XMLDesignDoc = design_request.responseXML
				//Parsing the xml document returned from the Notes view, we get the view design
				var root_design = XMLDesignDoc.getElementsByTagName("viewdesign").item(0);
				//If there is no node then set a status message and leave
				if (!root_design) {myView.innerHTML="No design found"; return}
				
				//Build an array of table headers before we dive into the entries
				var columns = root_design.getElementsByTagName("column")
				var columnArray = new Array()
				var noncategory = 0
				for (i = 0; i < columns.length; i++){
					if (!columns[i].getAttribute("sortcategorize")) {			//skip over categories
						columnArray[noncategory++] = columns[i].getAttribute("title")
					}
				}
				
				//Grab the alternate row color if it exists
				var altrowcolor = ""
				if (root_design.getAttribute("altrowcolor")) {
					altrowcolor = root_design.getAttribute("altrowcolor")
				}
				
				//Parse out the viewentry nodes - we will loop through the view entries to build our links
				var entries = root_entries.getElementsByTagName("viewentry")
				var sTemp = ""
				var columnCurrent = 0
				var columnPrevious = 0
				var closeFlag = false
				var expansion = "none"
				var plusminus = plusSign
				if (expandAll) {expansion = "block"; plusminus = minusSign }
				for (i = 0; i < entries.length; i++){	
					//If there is a descendants attribute, then it is a "category" and we want to handle that entry differently. 
					if (entries[i].getAttribute("descendants")){
						
						//Get the column number and determine what </span> tags we need
						var grandchildren = entries[i].getElementsByTagName("entrydata")
						columnCurrent = parseInt(grandchildren[0].getAttribute("columnnumber"))
						//We ALWAYS close the span if the last loop filled it with documents
						if (closeFlag) {sTemp += "</span>\n"; closeFlag = false}
						//If current < previous, then we are also closing out a parent span
						if (columnCurrent < columnPrevious) {sTemp += "</span>\n"}
						columnPrevious = columnCurrent
						
						//Generate the toggle and the column title
						sTemp += "<span id=\"" + targetSpan + i + "Controller\" " 
							+ "style=\"display:inline\" "
							+ "onClick=\"toggleDisplay('" + targetSpan + i + "')\">" + plusminus + "</span>&nbsp;"
							
							if( testDisplay ) {
								//alert( entries[i] )
								//alert( entries[i].getElementsByTagName("text")[0] )
								//alert( entries[i].text )
								//alert( entries[i].textContent )
								testDisplay = false;
							}
						sTemp += "<span class=\"select-region\">" + getText(entries[i]);					
						//Add document counts if required
						if (doCount) {sTemp += " (" + entries[i].getAttribute("descendants") + ")"}
						sTemp += "</span><br>\n"
						
						//Create the span that will contain the current element's 
						//children with an appropriate amount of padding
						sTemp += "<span style=\"padding-left: " + ((columnCurrent + 1)  * 20) 
							+ "px; display:" + expansion + ";\" id=\"" + targetSpan + i + "\">\n"

					} else { //a Notes doc!
						//First, we need to start a table for the documents and fill in the headers
						sTemp += "<table class=\"adviserLine\">\n"
						sTemp += "<tr>\n"
						for (a = 0; a < columnArray.length; a++){	
							sTemp += "<td>" + columnArray[a] + "</td>\n"
						}
						sTemp += "</tr>\n"
						
						var placeholder = 0
						//the siblings attribute gives us the number of docs in the current 
						//category and we want to handle them in a batch so they  can
						//be put into the same span and use the same display property
						for (doc = 0; doc < entries[i].getAttribute("siblings"); doc++){	
							placeholder = i + doc
							
							//Apply altrowcolor (if any) to even rows
							if (altrowcolor != "" && doc%2) {
								sTemp += "<tr style=\"background-color:" + altrowcolor + "\">\n"
							} else {
								sTemp += "<tr>\n"
							}
							
							//Walk down the collection of column values, making the first one a hyperlink
							var columnValues = entries[placeholder].getElementsByTagName("entrydata")
							var target = ""
							for (col = 0; col < columnArray.length -1; col++){
								if (col == 0) {
									sTemp += "<td class=\"adviserLink\">\n"
									if (getText(columnValues[2]).indexOf(".htm") > 0) {
										target = "target='_top'"
									}
									else {
										target = ""
									}
									sTemp += "<a " + target + " href=\"" + location.href.substring(0, location.href.indexOf(".au")+3) + "/"	+ getText(columnValues[2]) + "\">" + getText(columnValues[0]) + "</a>";
								} else {
									sTemp += "<td class=\"adviserName\">\n"								
									sTemp += getText(columnValues[col])
								}
								sTemp += "</td>\n"
							}
							sTemp += "</tr>\n"
						} // end for
						sTemp += "</table>\n"
						//increment i by the value of g so that ther outer
						//for loop picks up where the inner for loop left off.
						i = placeholder
						closeFlag = true
					}
				}
				//Add the final closing tag before posting sTemp because
				//we won't be looping anymore to generate it dynamically
				sTemp += "</span>\n"
				myView.innerHTML = sTemp;
			} else {
				alert(targetSpan + " not found")
			}
		} else {
			alert('There was a problem with the request.');
		}
	}
}


function getText(element) {
/*	Charles F. Phillips
	01/30/2007
	This reduces a lot of redundancy in processResponse
	Modified to handle IE7
*/
	var agt = navigator.userAgent.toLowerCase();

	if (webstandard) { // Mozilla, Safari, ... AND IE7/IE8
		if (agt.indexOf("msie 7.")!=-1 || agt.indexOf("msie 8.")!=-1) {
			return element.text
		} else {		
			return element.textContent
		}
	} else if (window.ActiveXObject) { // IE6 and below
		return element.text
	}
}

function toggleDisplay(targetSpan) {
/*	Charles F. Phillips
	01/27/2007
	This not only toggles the display of thespan, but it changes + to - and back again
*/
	var theSpan = document.getElementById(targetSpan)
	var theController = document.getElementById(targetSpan + "Controller")
	if (theSpan) {
		if (theSpan.style.display == "block") {
			theSpan.style.display = "none"
			theController.innerHTML = plusSign
		} else {
			theSpan.style.display = "block"
			theController.innerHTML = minusSign
		}
	}
}