var xmlObj;

function loadXMLDoc(u, id) {
	// branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        xmlObj = new XMLHttpRequest();
        xmlObj.onreadystatechange = function(){processReqChange(id)};
        xmlObj.open("GET", u, true);
        xmlObj.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        xmlObj = new ActiveXObject("Microsoft.XMLHTTP");
        if (xmlObj) {
            xmlObj.onreadystatechange = function(){processReqChange(id)};
            xmlObj.open("GET", u, true);
            xmlObj.send();
        }
    }
}

function processReqChange(id) {
    if (xmlObj.readyState == 4) {   //State  : Loaded
		if (xmlObj.status == 200) { //Status : OK
			response = xmlObj.responseText;
			if (response.indexOf('script:') == 0){
				var scr = response.replace('script:', '');
				if (scr.length > 0){ eval(scr); }
			} else {
				document.getElementById(id).innerHTML = xmlObj.responseText;
			}
        } else {
            alert('There was a problem retrieving the XML data:\n' + xmlObj.statusText);
        }
    } else {
		document.getElementById(id).innerHTML = 'Loading...';
	}
}

function loadHTML(u, o){
	u = u + '&ts='+ Number(new Date()); 
	if (xmlObj) {
		if(xmlObj.readyState != 4){
			setTimeout('loadHTML(\''+u+'\', \''+o+'\')', 100);
		} else {
			loadXMLDoc(u, o);
		}
	} else {
		loadXMLDoc(u, o);
	}
}

function doLogin(id){
	usr = document.getElementById("username");
	pwd = document.getElementById("password");
	
	if (usr.value.length == 0){
		alert("U moet een gebruikersnaam invullen.");
		usr.focus();
		return false;
	}
	if (pwd.value.length == 0){
		alert("U moet een wachtwoord invullen.");
		pwd.focus();
		return false;
	}
	loadXMLDoc("/login.asp?action=login&id="+ id +"&username="+ usr.value +"&password="+ pwd.value +"&u="+ escape(document.location), "Object"+ id);
	return false;
}

function product(id, type){
	document.location = 'default.asp?id=15&product='+id+'&type='+type;
}

function goPage(id){
	document.location = 'default.asp?id='+id;
}

function download(id){
	document.location='/download.asp?id='+id;
}

function openImage(id){
	var leftPos = (screen.availWidth-100) / 2;
	var topPos = (screen.availHeight-100) / 2;
	window.open('/image-preview.asp?id='+id,'', 'scrollbars=no,resizable=yes,status=no,toolbar=no,width=100,height=100,top=' + topPos + ',left=' + leftPos);
}

function toggleCart(d){
	document.getElementById('cart').style.display = d;
}

function goCart(){
	document.location = '/cart.asp?u='+escape(document.location);
}

function addToCart(pid){
	var aantal = document.getElementById('aantal').value
	document.location = '/cart.asp?action=add&pid='+pid+'&aantal='+aantal+'&u='+escape(document.location);
}

function emptyCart(){
	if (confirm('Weet u zeker dat u uw winkelwagen wilt legen?')) {
		document.location = '/cart.asp?action=empty&u='+escape(document.location);
	}
}

function login(){
	document.location = '/account.asp?action=login';
}

function removeFromCart(pid){
	if (confirm('Weet u zeker dat u dit artikel uit de winkelwagen wilt verwijderen?')){
		window.location = 'cart.asp?action=remove&pid='+pid+'&u='+escape(document.getElementById('u').value);
	}
}

function changeNumber(c, id, pid){
	min = 1;
	var aantal = document.getElementById(id);
	if (isNaN(parseFloat(aantal.value))) {
		alert('Aantal moet een numerieke waarde zijn.');
	} else {
		newValue = parseFloat(aantal.value) + c;
		if (newValue < min) {
			if (confirm('Weet u zeker dat u dit artikel uit de winkelwagen wilt verwijderen?')){
				window.location = 'cart.asp?action=remove&pid='+pid+'&u='+escape(document.getElementById('u').value);
			} else {
			 	aantal.value = min;
				modified = true;
			}
		} else if (newValue > 0) {
			aantal.value = newValue;
			modified = true;		
		}
	}
}

function changeNumberV(o, v, min, max){
	var aantal = document.getElementById(o);
	if (aantal) {
		if (isNaN(parseFloat(aantal.value))) {
			alert('Dit is geen numerieke waarde.');
		} else {
			newValue = aantal.value.replace(",", ".")
			newValue = parseFloat(newValue) + v;
			if (newValue < min) {
				aantal.value = min;
			} else if (newValue > max) {
				aantal.value = max;
			} else {
				aantal.value = newValue.toString().replace(".", ",");
			}
		}
	}
}

function numbersonly(myfield, e, dec){
	var key;
	var keychar;

	if (window.event)
	   key = window.event.keyCode;
	else if (e)
	   key = e.which;
	else
	   return true;
	keychar = String.fromCharCode(key);

	// control keys
	if ((key==null) || (key==0) || (key==8) || 
	    (key==9) || (key==13) || (key==27) )
	   return true;
	
	// numbers
	else if ((("0123456789-").indexOf(keychar) > -1))
	   return true;
	
	// decimal point jump
	else if (dec && (keychar == "."))
	   {
	   myfield.form.elements[dec].focus();
	   return false;
	   }
	else
	   return false;
}

function recalcCart(){
	document.cart.order.value = 'false';
	document.cart.submit();
}

function orderCart(){
	if (modified) {
		document.cart.order.value = 'true';
		document.cart.submit();
	} else {
		document.location = 'order.asp';
	}
}

function showImage(img){
	var leftPos = (screen.availWidth-100) / 2;
	var topPos = (screen.availHeight-100) / 2;
	window.open('/image-preview.asp?img='+escape(img),'', 'scrollbars=no,resizable=yes,status=no,toolbar=no,width=100,height=100,top=' + topPos + ',left=' + leftPos);
}

function forgotPassword(){
	var leftPos = (screen.availWidth-400) / 2;
	var topPos = (screen.availHeight-400) / 2;
	window.open('/password.asp','', 'scrollbars=no,resizable=yes,status=no,toolbar=no,width=400,height=400,top=' + topPos + ',left=' + leftPos);
}

function orderBy(o, nr, dir){
	myForm = document.getElementById(o);
	myForm.order.value = nr;
	myForm.direction.value = dir;
	myForm.submit();
}

function addMarker(point, html, iconImg, id, tip) {
	var icon = new GIcon();
	icon.image = "/lib/images/"+ iconImg;
	icon.shadow = "/lib/images/marker-shadow.png";
	icon.iconSize = new GSize(36,18);
	icon.shadowSize = new GSize(36,18);
	icon.iconAnchor = new GPoint(26,18);
	icon.infoWindowAnchor = new GPoint(26,9);

	eval("bounds"+ id +".extend(point)");
	
	var marker = new GMarker(point, icon);
	GEvent.addListener(marker, "click", function() {
	  	marker.openInfoWindowHtml(html);
	});
	
	/*
	marker.openExtInfoWindow(
              map, 
              "custom_info_window_red",
              html,
              {beakOffset: 3}
		); 
	*/
	
	var tooltip = new Tooltip(marker, tip, 4);
	marker.tooltip = tooltip;
	var map = eval("map"+ id);
	
	map.addOverlay(tooltip);
	GEvent.addListener(marker,'mouseover',function(){
		this.tooltip.show();
	});
	GEvent.addListener(marker,'mouseout',function(){
		this.tooltip.hide();
	});
	
	return marker;
}

var currentMenu;
function toggleMenu(o){
	var lvl = parseInt(o.className.replace("lvl", ""));
	if (lvl == 0){
		if ((currentMenu) && (currentMenu.id != o.id)) {
			var el = currentMenu.getElementsByTagName("DIV");
			for (var i = 0; i < el.length; i++) {
				if (el[i].className.indexOf("lvl") >= 0) {
					el[i].style.display = "none";
				}		
			}
		}
		currentMenu = o;
	}
	lvl = lvl + 1;
	var el = o.getElementsByTagName("DIV");
	for (var i = 0; i < el.length; i++) {
		if ((el[i].style.display == "none") && (el[i].className == "lvl"+ lvl)) {
			el[i].style.display = "";
		}
	}
}

function initMenu(){
	if (document.getElementById("menu")) {
		var el = document.getElementById("menu").getElementsByTagName("DIV");
		for (var i = 0; i < el.length; i++) {
			if ((el[i].style.display == "") && (el[i].className == "lvl0")) {
				currentMenu = el[i];
				break;
			}
		}
	}
}

function toggleInputHelp(o, e){
	if (e == "focus") {
		o.className = "";
		if (o.value == o.title){ o.value = ""; }
	}
	
	if (e == "blur") {
		if (o.value == ""){
			o.value = o.title;
			o.className = "empty";
		}
	}
}

function checkCalculator(){
	var koopsom = document.getElementById("koopsom");
	var hypotheeksom = document.getElementById("hypotheeksom");
	
	var k = isNaN(parseFloat(koopsom.value));
	var h = isNaN(parseFloat(hypotheeksom.value));
	
	if ((k) && (h)) {
		if (isNaN(parseFloat(koopsom.value))) {
			alert("U dient de koopsom van uw woning in te voeren.");
			koopsom.focus();
			return false;
		}
	
		if (isNaN(parseFloat(hypotheeksom.value))) {
			alert("U dient de hypotheeksom in te voeren.");
			hypotheeksom.focus();
			return false;
		}
	}
}

function logout(){
	if (confirm("Weet u zeker dat u wilt stoppen?")){
		document.location = "logout.asp";
	}
}