var type = "IE";	//Variable used to hold the browser name
BrowserSniffer();
//detects the capabilities of the browser
function BrowserSniffer() {
	if (navigator.userAgent.indexOf("Opera")!=-1 && document.getElementById) type="OP";		//Opera
	else if (document.all) type="IE";														//Internet Explorer e.g. IE4 upwards
	else if (document.layers) type="NN";													//Netscape Communicator 4
	else if (!document.all && document.getElementById) type="MO";							//Mozila e.g. Netscape 6 upwards
	else type = "IE";		//I assume it will not get here
}
function showVerboden() {
	var argv=showVerboden.arguments;
	var argc = (showVerboden.arguments.length)
	var str="";
	for(i=0;i<argc;i++) {
			if (i==0) {
					str="'" + argv[i] + "'";
			}else{
				str=str+", '" + argv[i] + "'";
			}
	}
	var obj = document.getElementById('verboden'); 
 	obj.innerHTML = "<a href=\"javascript: verstuur(" + str + ");\" class=\"link\">Verstuur formulier &raquo;</a>"
}
function getLayer(name) {

  // Returns a handle to the named layer.

  if (document.layers)
    return(document.layers[name]);
  else if (document.all) {
    layer = eval('document.all.' + name + '.style');
    //alert (layer.id);
    return(layer);
   //return (document.getElementById(name))
  }
  else
    {
      return (document.getElementById(name))
      //return(null);
    }
}
//Show and hide a layer
//id is the name of the layer
//action is either hidden or visible
//Seems to work with all versions NN4 plus other browsers
function showLayer(id, action){
	if (type=="IE") eval("document.all." + id + ".style.visibility='" + action + "'");
	if (type=="NN") eval("document." + id + ".visibility='" + action + "'");
	if (type=="MO" || type=="OP") eval("document.getElementById('" + id + "').style.visibility='" + action + "'");
}

function hideLayer(id){
	if (type=="IE") eval("document.all." + id + ".style.visibility='hidden'");
	if (type=="NN") eval("document." + id + ".visibility='hide'");
	if (type=="MO" || type=="OP") eval("document.getElementById('" + id + "').style.visibility='hidden'");
}
function zoeken(){
	document.formulier.submit();
}

function verstuur(velden){ 
	var argv = verstuur.arguments;
	var argc = (verstuur.arguments.length)/3 
	//1=veldnaam, 2=naam, 3=type
	for(i=0;i<argc;i++) {
		fld = eval('document.formulier.' + argv[i])
		if(fld.value==''){ 
			alert (argv[i+argc]+' is verplicht')
			fld.focus();
			return;
		}else{
			if(argv[i+(2*argc)]=='3'){ //email
				val = fld.value.indexOf(' ') == -1 //geen spaties
				val &= fld.value.indexOf('@') > 0 //er zit een @ in
				val &= fld.value.indexOf('@') == fld.value.lastIndexOf('@') //slechts 1 @
				val &= fld.value.indexOf('@') < fld.value.lastIndexOf('.') //een @ voor een punt
				val &= fld.value.lastIndexOf('.') < fld.value.length-2 //twee letters achter de punt
				if (!val){  				  
					alert ('Er is geen geldig email adres ingevuld')
					fld.focus();
					return;
				}
				if(document.formulier.vanemail){document.formulier.vanemail.value=fld.value}
			}
		}
		if(argv[i+(2*argc)]=='4'){ //pulldown
		 	if(fld.selectedIndex==0){ 				  
				alert (argv[i+argc]+' is verplicht')
 				fld.focus();
				return;
			}
		}
	}
	document.formulier.submit()
}
  
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 openwin(page, w, h) {
	feat='width=' + w + ', height=' + h + ',status=1, scrollbars=1, resizable=1'
  	window.open(page, 'Popup',feat)
}


function zenden(){
	if(document.sendform.naam.value==""){
		alert("Het formulier is niet compleet ingevuld. Uw naam is verplicht")
		document.sendform.naam.focus();
	}else{
		if((document.sendform.email.value == "") || (document.sendform.email.value.indexOf('@') == -1) || (document.sendform.email.value.indexOf('.') == -1)) {
		  alert("Het formulier is niet compleet ingevuld. Uw e-mail adres is verplicht")
		  document.sendform.email.focus();
		  return;
		}
	
		document.sendform.submit()
	}
}
function doAanmelden(){
	if(document.sendform.naam.value==""){
		alert("Het formulier is niet compleet ingevuld. Uw naam is verplicht")
		document.sendform.naam.focus();
	}else{
		
		if(document.sendform.email.value == "") {
		  alert("Uw e-mail adres is verplicht")
		  document.sendform.email.focus();
		  return;
		} else	{
				val = document.sendform.email.value.indexOf(' ') == -1 //geen spaties
  				val &= document.sendform.email.value.indexOf('@') > 0 //er zit een @ in
  				val &= document.sendform.email.value.indexOf('@') == document.sendform.email.value.lastIndexOf('@') //slechts 1 @
  				val &= document.sendform.email.value.indexOf('@') < document.sendform.email.value.lastIndexOf('.') //een @ voor een punt
  				val &= document.sendform.email.value.lastIndexOf('.') < document.sendform.email.value.length-2 //twee letters achter de punt
  				if (!val){  				  
    				alert ('Er is geen geldig email adres ingevuld')
	    	      document.sendform.email.focus();
	    	      return;
    	      }
		}
		document.sendform.submit()
	}
}


function volgende(page) {
	document.cat.page.value = page;
	document.cat.id.value = 0;
	anderePagina(1);
}
function vorige(page) {
	document.cat.page.value = page;
	document.cat.id.value = 0;
	anderePagina(-1);           
}

function andereCat(){
	document.cat.page.value = 0;
	document.cat.sc.value = 0;
	document.cat.id.value = 0;
	document.cat.submit();
}
function opsturen(){
	document.formulier.opgestuurd.value = 1;
	document.formulier.submit();
}
var aantal, eindbreedte, pauze,speed,wacht,totalebreedte;

function startscroll(inAantal, inBreedte){				
	speed=1;
	wacht=50;
	aantal=inAantal;	
	totalebreedte=inBreedte
	eindbreedte=880;
	pauze=0;
	scrollopzij();	
	
}
function getElementPosition(elemID){
	var offsetTrail = document.getElementById(elemID);
	var offsetLeft = 0;
	var offsetTop = 0;
	while (offsetTrail){
		offsetLeft += offsetTrail.offsetLeft;
		offsetTop += offsetTrail.offsetTop;
		offsetTrail = offsetTrail.offsetParent;
	}
	if (navigator.userAgent.indexOf('Mac') != -1 && typeof document.body.leftMargin != 'undefined'){
		offsetLeft += document.body.leftMargin;
		offsetTop += document.body.topMargin;
	}
	return {left:offsetLeft,top:offsetTop};
}



function  movements(e) {
  document.onmousemove = getMousePos;
}
 
function getScrollSize() {
    var x, y;
    if (self.pageYOffset) {
		x = self.pageXOffset;
		y = self.pageYOffset;
	}
	else if (document.body) {
		if(document.documentElement) {
			x = document.documentElement.scrollLeft;
			y = document.documentElement.scrollTop;
		}
		else {
			x = document.body.scrollLeft;
			y = document.body.scrollTop;
		}
	}
	var array = new Array(x,y);
	return array;
	
}
 
function getMousePos(e) {
	if(document.Event) {
		if(document.captureEvents) {
			document.captureEvents(Event.MOUSEMOVE);
		}
	}
	if(!e) e = window.event;
        var scrollPos = getScrollSize();
        var x = (document.Event) ? e.pageX + scrollPos[0] : e.clientX + scrollPos[0];
        var y = (document.Event) ? e.pageY + scrollPos[1] : e.clientY + scrollPos[1];
        relx=x-300;

				speed=parseInt(relx/70);
				if(speed<1){speed=1}
}




function scrollopzij(){	
	if(pauze==0){
		for(a=1;a<=aantal;a++){
			name='zin'+a
			var obj = document.getElementById(name);		
			leftie=obj.style.left;
			oudeleft=Left(obj.style.left, leftie.length-2)
			nieuweleft=eval(oudeleft)-eval(speed)
			obj.style.left=nieuweleft+"px";	
			if(oudeleft<0){				
					opacity=0;
					obj.style.left=eval(oudeleft)+eval(totalebreedte)+"px";
			}
			if(oudeleft>=0 && oudeleft<50){
				opacity=2*oudeleft;
				//alert(a+': oudeleft='+oudeleft)
			}
			if(oudeleft>=50 && oudeleft<eindbreedte-100){
				opacity=100;
				//alert(a+': oudeleft='+oudeleft)
			}
			if(oudeleft>=eindbreedte-50&&oudeleft<=eindbreedte){
				opacity=2*(eindbreedte-oudeleft);
			};
			if(oudeleft>eindbreedte){
				opacity=0;		
			};
	
			//opacity=100;
			obj.style.opacity = (opacity/100); 
    		obj.style.MozOpacity = (opacity/100); 
    		obj.style.KhtmlOpacity = (opacity/100); 
    		obj.style.filter = "alpha(opacity=" + opacity + ")"; 
		}
	}
	setTimeout('scrollopzij()', wacht)
}
function Left(str, n){
	if (n <= 0)
	    return "";
	else if (n > String(str).length)
	    return str;
	else
	    return String(str).substring(0,n);
}
var oudez;
function erover(imgid){	
	pauze=1;
	var imgobj = document.getElementById('img'+imgid); 
	var divobj = document.getElementById('zin'+imgid); 
	
	imgobj.width=2*imgobj.width;
	imgobj.height=2*imgobj.height;
	
	toppie2=divobj.style.top;
	oudetop2=Left(divobj.style.top, toppie2.length-2)
	divobj.style.top=(oudetop2-(imgobj.height/4))+"px";
	
	leftie2=divobj.style.left;
	oudeleft2=Left(divobj.style.left, leftie2.length-2)
	halvebreedte=parseInt(imgobj.width/4)
	divobj.style.left=oudeleft2-(halvebreedte)+"px";
	oudez=divobj.style.zIndex;
	divobj.style.zIndex=500;
}
function eruit(imgid){	
	pauze=0;
	var imgobj = document.getElementById('img'+imgid); 
	var divobj = document.getElementById('zin'+imgid); 
	
	imgobj.width=imgobj.width/2;
	imgobj.height=imgobj.height/2;
	
	divobj.style.top=oudetop2+"px";		 		
	divobj.style.left=oudeleft2+"px";
	
	divobj.style.zIndex=oudez;
}