// global flag
var isIE = false;

// global request and XML document objects
var req;

var ddid;

var kwaak; // targetid's
var cell; // toggling cells
var redirectionURL; // where should the dropdown go to
var regionid;
var city;

var querystring = '';
var Filter = '&filter=';
var QueryCounter = '';
var SaveQS;
var XMLurl = '/modules/wtb_xml.cfm';

// retrieve XML document (reusable generic function);
// parameter is URL string (relative or complete) to
// an .xml file whose Content-Type is a valid XML
// type, such as text/xml; XML source must be from
// same domain as HTML file
function loadXMLDoc(url) {
    // branch for native XMLHttpRequest object

    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processReqChange;
        req.open("GET", url, 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 = processReqChange;
            req.open("GET", url, true);
            req.send();
        }
    }
}

// handle onreadystatechange event of req object
function processReqChange() {
    // only if req shows "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {

			//alert('clearTopicList: ' + kwaak);

            clearTopicList(kwaak);
            buildTopicList(kwaak);
			//alert(kwaak + ' ' + cell)

			//alert('js: line 58')
			toggleOn(kwaak);
			//toggleOff(cell + '0');
			//toggleOn(cell + '1');
			//toggleOn(cell + '2');
			ShowHideStuff();
			
         } else {
            alert("There was a problem retrieving the XML data:\n" + '[' + redirectionURL + ']' +
                req.statusText);
         }
    }
}

//function ValidateEmail(s) {
//	return s.match('#JSStringFormat("^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$")#');
//	}

// invoked by "Category" select element change;
// loads chosen XML document, clears Topics select
// element, loads new items into Topics select element
function loadDoc(elementId,targetid,cll,locurl) {
    // equalize W3C/IE event models to get event object
	redirectionURL = locurl;
	cell = cll;
	kwaak=targetid;
	
	
	
    // evt = (evt) ? evt : ((window.event) ? window.event : null);
    // if (evt) {
        // equalize W3C/IE models to get event target reference
        // var elem = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
        // if (elem) {
            try {
				var qs;
				// qs = elem.options[elem.selectedIndex].value;
				qs = document.getElementById(elementId).value;			
				// ddid = elem.id;
				
				// alert('js: line 95, elem.id: ' + elem.id + ', selectedIndex: ' + elem.selectedIndex);				
				
				filter = document.getElementById("productline").value;				
				countryid = document.getElementById("countryid").value;
				regionid = document.getElementById("regionid").value;
				city = document.getElementById("city").value;				
				
				//alert('js: line 104 countryid/ regionid/ city: ' + countryid + ' ' + regionid + ' ' + city);
				
				if (elementId == 'countryid') {
					countryid = document.getElementById('countryid').value;
					//alert('js: line 101, countryid: ' + countryid);
					querystring = '';
					querystring = 'countryid' + '=' + countryid + Filter;
				}
				
				if (elementId == 'regionid') {
					regionid = qs;
					querystring = '';
					querystring = 'countryid=' + countryid + '&regionid=' + regionid + Filter;					
				}	
				
				//if (elementId == 'city') {
					//city = qs;
					//querystring = '';
					//querystring = 'countryid=' + countryid + '&regionid=' + regionid + '&city=' + city + '&filter=' + filter;					
				//}						
				
										 
                
					//alert('js, line 123 querystring: ' + querystring);
                    loadXMLDoc(XMLurl + '?' + querystring + '&2620560F21406457D252970FFBF447F1');
					//document.getElementById('queryStringDiv').innerHTML = XMLurl + '?' + querystring + '&2620560F21406457D252970FFBF447F1';
                	
            }
            catch(e) {
                var msg = (typeof e == "string") ? e : ((e.message) ? e.message : "Unknown Error");
                alert("Unable to get XML data...:\n" + '[' + redirectionURL + ']\n' + msg);
                return;
            }
        //}
    //}
}

// retrieve text of an XML document element, including
// elements using namespaces
function getElementTextNS(prefix, local, parentElem, index) {
    var result = "";
    if (prefix && isIE) {
        // IE/Windows way of handling namespaces
        result = parentElem.getElementsByTagName(prefix + ":" + local)[index];
    } else {
        // the namespace versions of this method 
        // (getElementsByTagNameNS()) operate
        // differently in Safari and Mozilla, but both
        // return value with just local name, provided 
        // there aren't conflicts with non-namespace element
        // names
        result = parentElem.getElementsByTagName(local)[index];
    }
    if (result) {
        // get text, accounting for possible
        // whitespace (carriage return) text nodes 
        if (result.childNodes.length > 1) {
            return result.childNodes[1].nodeValue;
        } else {
            return result.firstChild.nodeValue;    		
        }
    } else {
        return "n/a";
    }
}

// empty Topics select list content
function clearTopicList(targetid) {
    var select = document.getElementById(targetid);
    while (select.length > 0) {
        select.remove(0);
    }
}

// add item to select element the less
// elegant, but compatible way.
function appendToSelect(select, value, content) {
    var opt;
    opt = document.createElement("option");
    opt.value = value;
    opt.appendChild(content);
    select.appendChild(opt);
}

// fill Topics select list with items from
// the current XML document
function buildTopicList(targetid) {
    var select = document.getElementById(targetid);
    var items = req.responseXML.getElementsByTagName("item");
    // loop through <item> elements, and add each nested
    // <name> element to Topics select element
	// alert('wat nou weer' + redirectionURL);
    for (var i = 0; i < items.length; i++) {
		add = '';
		pre = '';
		if (targetid == 'citykont') {			
			add = '&' + querystring;
			pre = redirectionURL + '?' + targetid + '=';
			}		 
        appendToSelect(select, pre + getElementTextNS("", "id", items[i], 0) + add,
            document.createTextNode(getElementTextNS("", "name", items[i], 0)));
    }
    // clear detail display
    document.getElementById("details").innerHTML = "";
}

// display details retrieved from XML document
function showDetail(evt) {
    evt = (evt) ? evt : ((window.event) ? window.event : null);
    var item, content, div;
    if (evt) {
        var select = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
        if (select && select.options.length > 1) {
            // copy <content:encoded> element text for
            // the selected item
            item = req.responseXML.getElementsByTagName("item")[select.value];
            content = getElementTextNS("content", "encoded", item, 0);
            div = document.getElementById("details");
            div.innerHTML = "";
            // blast new HTML content into "details" <div>
            div.innerHTML = content;
        }
    }
}

// Switch for German postal code search...
// function countrychoice(evt) {

// evt = (evt) ? evt : ((window.event) ? window.event : null);
//   if (evt) {
//        // equalize W3C/IE models to get event target reference
//        var elem = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
//       if (elem) {
//			
//			qs = elem.options[elem.selectedIndex].value;
//			
//				if (qs == '78') {
//				
//				toggleOff('rr1,rr2,ss1,ss2,fx');
//				toggleOn('pc1,pc2,pc3');
//				document.forms[0].action = '/wheretobuy/postalcodesearchgermany.cfm?ac=1';				
//				
//				} else {
//					
//					toggleOff('rr1,rr2,ss1,ss2,pc1,pc2,pc3');
//					loadDoc(evt,'regionid','rr','/modules/wtb_xml.cfm');
//					toggle('rr0');				
//				}				
//
//			}
//	}
// }