// initialiseren van variabelen
cindex = -1;
naam_old = -1;
// browsercontrole
app = navigator.appName;
ver = navigator.appVersion;
mac = ver.indexOf("Macintosh") > 0;
win = ver.indexOf("Win") > 0;
vnum = parseFloat(ver);
 magOok = (((app == "Netscape") && (vnum >= 3 )) ||
       ((mac) && (app == "Microsoft Internet Explorer") && (vnum >= 3.01 )) ||
       ((win) && (app == "Microsoft Internet Explorer") && (vnum >= 4 ))) ;

// als de browser rollovers kan laten zien dan de array met plaatjes aanmaken
 if (magOok) 
         {
// vul het aantal roll-over plaatjes in 
          off = new MakeImageArray(7);
          over = new MakeImageArray(7);
          down = new MakeImageArray(7);
            
// vul hier de off-toestand van de plaatjes in
           off[0].src = "images/en/b1.gif";
           off[1].src = "images/en/b2.gif";
           off[2].src = "images/en/b3.gif";
           off[3].src = "images/en/b4.gif";
           off[4].src = "images/en/b5.gif";
           off[5].src = "images/h1.gif";
           off[6].src = "images/h2.gif";
           off[7].src = "images/h3.gif";
// vul hier de over-toestand in
           over[0].src = "images/en/b1a.gif";
           over[1].src = "images/en/b2a.gif";
           over[2].src = "images/en/b3a.gif";
           over[3].src = "images/en/b4a.gif";
           over[4].src = "images/en/b5a.gif";
           over[5].src = "images/h1a.gif";
           over[6].src = "images/h2a.gif";
           over[7].src = "images/h3a.gif";
// en ook de down-toestand
           down[0].src = "images/en/b1a.gif";
           down[1].src = "images/en/b2a.gif";
           down[2].src = "images/en/b3a.gif";
           down[3].src = "images/en/b4a.gif";
           down[4].src = "images/en/b5a.gif";
           down[4].src = "images/en/b5a.gif";
           down[5].src = "images/h1a.gif";
           down[6].src = "images/h2a.gif";
           down[7].src = "images/h3a.gif";
}
// de browser wordt verteld dattie de plaatjes moet pre-loaden     
function MakeImageArray(n) {
    this.length = n;
    for (var i = 0; i<=n; i++) {
        this[i] = new Image();
    }
    return this;
}
// de roll-over functie
function mOver(num,pos) {
    if (document.images) {
        if ((over[num].src != "") && (num != cindex)) {
            document.images[pos].src = over[num].src;
        }
    }
}
// de opruim functie
function mOut(num,pos) {
    if (document.images) {
        if ((off[num].src != "") && (num != cindex)) {
            document.images[pos].src = off[num].src;
        }
    }                   
}
// en de klik-functie
function mClick(num,pos) {
    if (document.images) {
        if ((down[num].src != "")) {
            if (cindex != -1) {
                document.images[naam_old].src = off[cindex].src;
            }
            document.images[pos].src = down[num].src;
            cindex = num;
            naam_old = pos;
        }
    }
}

function selectWm () {
	if (document.forms) {
		wm = document.forms['wmform']['wmselect'].value;
		if (wm == '0') {
			return true;
		} else {
			this.location.href = 'werkmaatschappij.php?wmid=' + wm; 
		}
	}	
}

function openPopup(which,width,height) {

    w = screen.width - 260;
    h = screen.height - 160;
//	w = width + 60;
//	h = height;
	l = (screen.width - w) / 2;
	t = (screen.height - h) / 2;
	msg = window.open (which, "msg", "toolbar=no,width=" + w + ",height=" + h + ",directories=no,resizable=yes,status=no,scrollbars=yes,menubar=no,location=no,left=" + l + ",screenX=" + l + ",top=" + t + ",screenY=" + t);
	msg.focus ();
}

function show(id) {
	if (document.getElementById)
	document.getElementById(id).style.visibility = "visible";
	else if (document.all)
	document.all[id].style.visibility ="visible";
	else if (document.layers)
	document.layers[id].visibility = "show";
}

function hide(id) {
	if (document.getElementById)
	document.getElementById(id).style.visibility = "hidden";
	else if (document.all)
	document.all[id].style.visibility ="hidden";
	else if (document.layers)
	document.layers[id].visibility = "hide";
}


function openImage (which, width, height) {
        w = width;
        h = height;
        l = (screen.width - w) / 2;
        t = (screen.height - h) / 2;
        msg = window.open ("image.php?image=" + which + "&width=" + width + "&height=" + height, "msg", "toolbar=no,width=" + w + ",height=" + h + ",directories=no,resizable=no,status=no,scrollbars=no,menubar=no,location=no,left=" + l + ",screenX=" + l + ",top=" + t + ",screenY=" + t);
        msg.focus ();
}

function openImageAjax(title_, image_, width_, height_) {
	dialog.open( {
		title:title_,
		modal:true,
		width:width_ + 22,
		duration:0.5,
		background:'#C8C7D7',
		content:'<img src="' + image_ + '" width="' + width_ + '" height="' + height_ + '">',
		buttons:'Sluiten',
		button_cancel:'Sluiten',
		callback:function(button_, dialog_) {
			dialog_.close();
		}
	} );
	return false;
}