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 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 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);
    }
}
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(argv[i+(2*argc)]=='4'){ //pulldown
		 	if(fld.selectedIndex==0){ 				  
				alert (argv[i+argc]+' is verplicht')
 				fld.focus();
				return;
			}
		}
		if(argv[i+(2*argc)]=='7'){ //radio
			for (var t=0; t < fld.length; t++){
				if (fld[t].checked){
					var val = fld[t].value;
				}
			}
			if (!val){  				  
 				alert ('Er is geen keuze gemaakt bij '+argv[i+argc])
    	       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,aantaltwee,pauzetwee, eindbreedte, pauze,speed,wacht,totalebreedte,totalebreedtetwee, pauzetwee;
wacht=50;
eindbreedte=940;

function startscroll(inAantal, inBreedte){				
	speed=1;
	aantal=inAantal;	
	totalebreedte=inBreedte
	pauze=0;
	scrollopzij();	
	
}

function startscrolltwee(inAantal, inBreedte){				
	speed=1;
	aantaltwee=inAantal;	
	totalebreedtetwee=inBreedte
	pauzetwee=0;
	scrollopzijtwee();	
}
function getXY(e) {
   x = (window.Event) ? e.pageX : event.clientX;
	relx=x-300;

	speed=parseInt(relx/70);
	if(speed<1){speed=1}
}
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-100&&oudeleft<=eindbreedte-50){
				opacity=2*(eindbreedte-oudeleft-50);
			};
			if(oudeleft>eindbreedte-50){
				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 scrollopzijtwee(){	
	if(pauzetwee==0){
		
		for(a=1;a<=aantaltwee;a++){
			name2='zintwee'+a
			var obj2 = document.getElementById(name2);		
			leftie2=obj2.style.left;
			oudeleft2=Left(obj2.style.left, leftie2.length-2)
			nieuweleft2=eval(oudeleft2)-eval(speed)
			obj2.style.left=nieuweleft2+"px";	
			
			if(oudeleft2<0){				
					opacity2=0;
					obj2.style.left=eval(oudeleft2)+eval(totalebreedtetwee)+"px";
			}
			
			if(oudeleft2>=0 && oudeleft2<50){
				opacity2=2*oudeleft2;
				//alert(a+': oudeleft='+oudeleft)
			}
			
			if(oudeleft2>=50 && oudeleft2<eindbreedte-100){
				opacity2=100;
				//alert(a+': oudeleft='+oudeleft)
			}
			
			if(oudeleft2>=eindbreedte-100&&oudeleft2<=eindbreedte-50){
				opacity2=2*(eindbreedte-oudeleft2-50);
			};
			if(oudeleft2>eindbreedte-50){
				opacity2=0;		
			};
	
			//opacity=100;
			obj2.style.opacity = (opacity2/100); 
    		obj2.style.MozOpacity = (opacity2/100); 
    		obj2.style.KhtmlOpacity = (opacity2/100); 
    		obj2.style.filter = "alpha(opacity=" + opacity2 + ")"; 
		}
	}
	setTimeout('scrollopzijtwee()', 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,oudez2;

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;
	
	toppie=divobj.style.top;
	oudetop=Left(divobj.style.top, toppie.length-2)
	divobj.style.top=(oudetop-(imgobj.height/4))+"px";
	
	leftie=divobj.style.left;
	oudeleft=Left(divobj.style.left, leftie.length-2)
	halvebreedte=parseInt(imgobj.width/4)
	divobj.style.left=oudeleft-(halvebreedte)+"px";
	oudez=divobj.style.zIndex;
	divobj.style.zIndex=500;
}
function erover2(imgid){	
	pauzetwee=1;
	var imgobj2 = document.getElementById('imgtwee'+imgid); 
	var divobj2 = document.getElementById('zintwee'+imgid); 
	
	imgobj2.width=2*imgobj2.width;
	imgobj2.height=2*imgobj2.height;
	
	toppie2=divobj2.style.top;
	oudetop2=Left(divobj2.style.top, toppie2.length-2)
	divobj2.style.top=(oudetop2-(imgobj2.height/4))+"px";
	
	leftie2=divobj2.style.left;
	oudeleft2=Left(divobj2.style.left, leftie2.length-2)
	halvebreedte2=parseInt(imgobj2.width/4)
	divobj2.style.left=oudeleft2-(halvebreedte2)+"px";
	oudez2=divobj2.style.zIndex;
	divobj2.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=oudetop+"px";		 		
	divobj.style.left=oudeleft+"px";
	
	divobj.style.zIndex=oudez;
}

function eruit2(imgid){	
	pauzetwee=0;
	var imgobj2 = document.getElementById('imgtwee'+imgid); 
	var divobj2 = document.getElementById('zintwee'+imgid); 
	
	imgobj2.width=imgobj2.width/2;
	imgobj2.height=imgobj2.height/2;
	
	divobj2.style.top=oudetop2+"px";		 		
	divobj2.style.left=oudeleft2+"px";
	
	divobj2.style.zIndex=oudez2;
}