var flag = false;

function imageLoad() {  // called with onLoad()
    if (document.images) {
        img1on = new Image(); img1on.src = "buttons/algemeen_on.gif";
        img2on = new Image(); img2on.src = "buttons/bulletin_on.gif";
        img3on = new Image(); img3on.src = "buttons/contact_on.gif";
		img4on = new Image(); img4on.src = "buttons/forum_on.gif";
		

// and so on until you load them all          
        return (flag = true);  // set the flag and let the function know know it can work
    }
}

// Check browser
var netscape = (document.layers)? true:false;
var iexplorer = (document.all)? true:false;
var dom = (document.getElementById)? true:false;

// Ask for image-position
function ysPos(what){
	if(iexplorer){
		return yIE(eval('document.'+what));
	}
	else if(netscape){
		return eval('document.'+what+'.y');
	}
	else if(dom){
		return parseInt(yIE(eval('document.getElementById("' + what + '")')));
	}
}

function xsPos(what){
	if(iexplorer){
		return xIE(eval('document.'+what));
	}
	else if(netscape){
		return eval('document.'+what+'.x');
	}
	else if(dom){
		return parseInt(xIE(eval('document.getElementById("' + what + '")')));
	}
}

function yIE(what) {
	if(what.offsetParent) {
		return parseInt((what.offsetTop + yIE(what.offsetParent)));
	} else {
		return parseInt(what.offsetTop);
	}
}
function xIE(what) {
	if(what.offsetParent) {
		return parseInt((what.offsetLeft + xIE(what.offsetParent)));
	} else {
		return parseInt(what.offsetLeft);
	}
}

// Make object from layer:
function makeObj(id) {
	if (netscape) {
		this.elm = eval("document.layers['"+id+"']");
		this.css = this.elm;
		this.doc = this.css.document;
	} else if (iexplorer) {
		this.elm = eval("document.all['"+id+"']");
		this.css = this.elm.style;
		this.doc = document;
	} else if (dom) {
		this.elm = eval("document.getElementById('"+id+"')");
		this.css = this.elm.style;
		this.doc = document;
	}
	this.moveTo = objMoveTo;
	this.id = this.elm.id
}


function objMoveTo(x,y) {
	this.css.left = x;
	this.css.top = y;
}


var picX,picY;
// Initializing layers:
var Nav1,Nav2,Nav3,Nav4,Nav5,Nav6,origWidth,origHeight;
function init() {

	if (navigator.platform.indexOf('Mac') != -1) {
	
		picX = xsPos('positiePic');
		picY = ysPos('positiePic')+5;
	
	}else{
	
		picX = xsPos('positiePic');
		picY = ysPos('positiePic');
	}
	
	if(document.layers) {
	origWidth = innerWidth;
	origHeight = innerHeight;
	}
	Nav1 = new makeObj('layalgemeen');
	Nav1.moveTo(parseInt(picX+284),parseInt(picY+18));
		
	Nav2 = new makeObj('laybulletin');
	Nav2.moveTo(parseInt(picX+395),parseInt(picY+18));
		
	Nav3 = new makeObj('laycontact');
	Nav3.moveTo(parseInt(picX+505),parseInt(picY+18));
	
	Nav4 = new makeObj('layforum');
	Nav4.moveTo(parseInt(picX+618),parseInt(picY+18));
	
	Nav5 = new makeObj('laywit1');
	Nav5.moveTo(parseInt(picX-18),parseInt(picY+18));
	
	Nav6 = new makeObj('laywit2');
	Nav6.moveTo(parseInt(picX+0),parseInt(picY+165));
}

// Resize-fix for NetScape
function myResize(){
	if(iexplorer) {
		setTimeout("document.location.href = document.location;",400);
	}
	else{
		if (innerWidth != origWidth || innerHeight != origHeight) {
			location.reload();
		}
	}
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function launchwin(TheUrl,WindowName,Props){
   newwin=window.open(TheUrl,WindowName,Props)
}