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_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_nbGroup(event, grpName) { //v6.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    nbArr = document[grpName];
    if (nbArr)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;
      nbArr[nbArr.length] = img;
  } }
}

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_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 displayToggler(divId, display){
	if(display==0){
		document.getElementById(divId).style.display='none';
	}
	else{
		document.getElementById(divId).style.display='';
	}
}
function switchImage(divId){
	theswitch = divId.id.substr(6,1);
	for (i=1;i<=totalimages;i++){
		document.getElementById("image_"+i).style.display='none';
		if (theswitch == i){
			document.getElementById("image_"+i).style.display='';
		}
	}
}
function checkform() {
	tel=0;
	var color= '#AA0000';
	var normalcolor='#666666';
	if (document.getElementById("naam").value =='') {				
		tel= tel+1;		
		document.getElementById("naam").style.border = '1px solid ' + color;
	} else	{ 
		document.getElementById("naam").style.border = '1px solid ' + normalcolor;		
	}
	if (document.getElementById("email").value =='') {
		tel= tel+1;		
		document.getElementById("email").style.border = '1px solid ' + color; 		
	} else	{ 
		document.getElementById("email").style.border = '1px solid ' + normalcolor;	
	}
	if (document.getElementById("bericht").value =='') {
		tel= tel+1;		
		document.getElementById("bericht").style.border = '1px solid ' + color;
	} else	{ 
		document.getElementById("bericht").style.border = '1px solid ' + normalcolor;	
	}
	if(tel==0){					
		return true;
	}
	else {
		document.getElementById("formMelding").innerHTML = '<b>* Vul alle verplichte velden in [' + tel + ']</b>';
		return false;
	}
}
function showLayer(num){
	for(i=1;i<=3;i++){
		document.getElementById("layer_"+i).style.display = 'none';
	}
	if (num != "close"){
		document.getElementById("layer_"+num).style.display = '';
	}
}