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) { //v4.01
  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 && d.getElementById) x=d.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 setBijschrift(layer, value) {
var hulp = document.getElementById(layer);
hulp.innerHTML = value;
}

function HoverParents(id, parentSnake) {
    Menu_HoverDynamic(document.getElementById(id));
    var parents = parentSnake.toString().split(',');

    for (i = 0; i < parents.length; i++) {
        if (parents[i] != '') {
            Menu_HoverDynamic(document.getElementById(parents[i]));
        }
    }
}

function UnhoverParents(id, parentSnake) {
    Menu_Unhover(document.getElementById(id));
    var parents = parentSnake.toString().split(',');

    for (i = 0; i < parents.length; i++) {
        if (parents[i] != '') {
            Menu_Unhover(document.getElementById(parents[i]));
        }
    }
}

function hidealllayersexcept(Menu, hidelayersname) {
    hidealllayers(hidelayersname)
    if (document.getElementById(Menu) != null) {
        //document.getElementById(Menu).style.visibility = "visible";
        document.getElementById(Menu).style.display = "block";
    }
}

function showlayer(Menu) {
    if (document.getElementById(Menu) != null) {
        //document.getElementById(Menu).style.visibility = "visible";
        document.getElementById(Menu).style.display = "block";
    }
}

function hidelayer(Menu) {
    if (document.getElementById(Menu) != null) {
        //document.getElementById(Menu).style.visibility = "visible";
        document.getElementById(Menu).style.display = "none";
    }
}

function toggleshowhidelayer(Menu) {
    if (document.getElementById(Menu) != null) {
        //document.getElementById(Menu).style.visibility = "visible";
        if (document.getElementById(Menu).style.display == "none") {
            document.getElementById(Menu).style.display = "block";
        } else {
            document.getElementById(Menu).style.display = "none";
        }
    }
}

function hidealllayers(hidelayersname) {

    var divs = document.getElementsByTagName('DIV');

    for (x = 0; x < divs.length; x++) {
        if (divs[x].getAttribute(hidelayersname) == "yes") {
            divs[x].style.display = "none";
        }
    }
}