var xmlhttp=false; 


// global flag
var isIE = false;

// global request and XML document objects
var req;
var getXmlLoad = new Object();

// 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) {
	//alert(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) {
        	buildTopicList();
         } else {
            alert("There was a problem retrieving the XML data:\n" +
                req.statusText);
         }
    }
}

// invoked by "Category" select element change;
// loads chosen XML document, clears Topics select
// element, loads new items into Topics select element
function loadDoc(evt, id) {
	//alert(evt, id);
	
	getXmlLoad.id_get = id;
    
    // equalize W3C/IE event models to get event object
    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.options[elem.selectedIndex].value != ""){
	        if (elem) {
	            try {
	                if (elem.selectedIndex > 0) {
	                    loadXMLDoc(elem.options[elem.selectedIndex].value);
	                }	
	            }
	            catch(e) {
	                var msg = (typeof e == "string") ? e : ((e.message) ? e.message : "Unknown Error");
	                alert("Unable to get XML data:\n" + msg);
	                return;
	            }
	        }
        }
        else{
    		clearTopicList(getXmlLoad.id_get);
    		var select = document.getElementById(getXmlLoad.id_get);
	    	var code = "";
	    	var categoria = "Choose a Category First";
	        appendToSelect(select, code, document.createTextNode(categoria));
        }
    }
}

// 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(id) {
    var select = document.getElementById(id);
    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);
	//alert(value);    
}

// fill Topics select list with items from the current XML document
function buildTopicList() {
	clearTopicList(getXmlLoad.id_get);
    var select = document.getElementById(getXmlLoad.id_get);
    var items = req.responseXML.getElementsByTagName("item");
    // loop through <item> elements, and add each nested
    // <description> element to Topics select element
    for (var i = 0; i < items.length; i++) {
    	code = getElementTextNS("", "code", items[i], 0);
    	categoria = getElementTextNS("", "description", items[i], 0);
        appendToSelect(select, code, document.createTextNode(categoria));
    }
}

// display details retrieved from XML document
function showDetail(evt) {
	//div = document.getElementById('group_id');
	//div.innerHTML = evt;
}


//------------------------------------------------
//  Form Submit
//	autor: www.randstad.be
//	date:  01/06/2006   
//------------------------------------------------
function formSubmit(action) {
	var f=document.forms["rs_form"];
	if (action=='next') {
		f.form_id_submit.value = f.id.value;
		f.id.value = f.form_id_next.value;
	} else if (action=='prev') {
		f.form_id_store.value = f.id.value;
		f.id.value = f.form_id_prev.value;
	} else if (action=='refresh') {
		f.form_id_store.value = f.id.value;
	} else if (action=='cancel') {
		f.form_id_clear.value = f.id.value;
		f.id.value = f.form_id_prev.value;
	}
	//alert(action+":"+f.id.value+"!"+f.form_id_submit.value);
	f.submit(f.id.value);
	return false;
}

function remove_all(set) {
	var k = set.length;
	for (j = 0; j<k-1; j++) {
		set.remove(1);
	}
}

//------------------------------------------------
//  confirmOperation
//	autor: Marcello De Palo
//	date:  12/10/2005   
//------------------------------------------------
function confirmOperation(Url, MESSAGE) {
	if (confirm(MESSAGE)) {
		document.location = Url;
	}
}

//------------------------------------------------
//  clean Form feeld
//	autor: www.randstad.be
//	date:  01/06/2006   
//------------------------------------------------
function formReset() {
	var forms_list = document.forms.length;
	for (i = 0; i < forms_list; i++) {
		document.forms[i].reset();
	}
}
//------------------------------------------------
//  clean text feeld
//	autor: www.randstad.be
//	date:  10/11/2004   
//------------------------------------------------
function clear_field(field) { 
	if ('undefined' == typeof self["_"+field.name]) { 
		self["_"+field.name] = true; 
		field.value = ''; 
	}
}

function switch_stp(id,color) {

	var imgName = 'ar'+id;
	var stpName = 'stp'+id;
	var titName = 'tit'+id;
	
	var doc_element = document.getElementById(stpName);
	var doc_title = document.getElementById(titName);
		
	var show = (doc_element.style.display == 'none') ? true:false;
	
	doc_element.style.display = (show) ? '':'none';

	doc_title.className = (show) ? color:'shade';
	doc_title.style.color = (show) ? '#fff':'#666';
		
	document.images[imgName].src = 'images/_grafix/global/menu_arrow_'+(show ? 'white':'grey')+'_down.gif';
}

function SwitchMenu(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementById("menu").getElementsByTagName("ul");

		if(el.style.display != "block"){
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="sub_menu"){
					ar[i].style.display = "none";
				}
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}


function switch_tab(id) {
	
	var stpName = 'stp_'+id;
	var titName = 'tit_'+id;
	
	var doc_element = document.getElementById(stpName);
	var doc_title = document.getElementById(titName);


	var el = document.getElementById(stpName);
	var ar = document.getElementById("browser").getElementsByTagName("div");

	var as = document.getElementById("tab_table").getElementsByTagName("td");

	
	
	if(el.style.display != "block"){
		for (var i=0; i<ar.length; i++){
			if (ar[i].className=="wrapper"){
				ar[i].style.display = "none";
			}
		}

		for (var k=0; k<as.length; k++){
			if (as[k].className=="tab_text_on"){
				as[k].className = "tab_text_off";
			}

			if (as[k].className=="tab_on"){
				as[k].className = "tab_off";
			}
		}
		
		el.style.display = "block";
		document.getElementById(titName).className = "tab_on";
	}
	else{
//		el.style.display = "none";
	}

		
}

//------------------------------------------------
//  open window
//	autor: Marcello De Palo
//	date:  20/06/2004   
//------------------------------------------------
function windowOpen(URL,W,H) {

	var L = (screen.width - W) / 2;
	var T = (screen.height - H) / 2;
	
	var newWin = window.open(URL, "", "width="+W+",height="+H+",top="+T+",left="+L+",menubar=no,resizable=no,scrollbars=no,status=no,directories=no");
	
}