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_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_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_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 displayDiv(divId, display){
	if(display==0){
		document.getElementById(divId).style.display='none';
	}
	else{
		document.getElementById(divId).style.display='';
	}
}

function makevisible(cur,which){
strength=(which==0)? 1 : 0.5

if (cur.style.MozOpacity)
cur.style.MozOpacity=strength
else if (cur.filters)
cur.filters.alpha.opacity=strength*100
}

function isEmail(string) {
	if (string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
		if (string.search(/.com/) != -1 | string.search(/.nl/) != -1 | string.search(/.net/) != -1 | string.search(/.org/) != -1 | string.search(/.nu/) != -1 | string.search(/.biz/) != -1 | string.search(/.info/) != -1 | string.search(/.be/) != -1) {
			return true;
		}
	else
		return false;
}		
function checkthisform() {
	tel=0;
	var color= '#f14c4c';
	var normalcolor='#fff';
	var textcolor='#fff';
	var normaltextcolor='#333';	
	if (document.getElementById("naam").value =='') {				tel= tel+1;		document.getElementById("naam").style.background = color; 	document.getElementById("naam").style.color = textcolor;		} else	{ document.getElementById("naam").style.background = normalcolor;	document.getElementById("naam").style.color = normaltextcolor;		}
	if (!(isEmail(document.getElementById("email").value))){		tel= tel+1;		document.getElementById("email").style.background = color; 	document.getElementById("email").style.color = textcolor;		} else	{ document.getElementById("email").style.background = normalcolor;	document.getElementById("email").style.color = normaltextcolor;	}
	if (document.getElementById("opmerkingen").value =='') {		tel= tel+1;		document.getElementById("opmerkingen").style.background = color; document.getElementById("opmerkingen").style.color = textcolor;	} else	{ document.getElementById("opmerkingen").style.background = normalcolor;  document.getElementById("opmerkingen").style.color = normaltextcolor;}		
	if(tel==0){					
		document.getElementById("form").submit();
	}
	else {
		document.getElementById("formmelding").innerHTML = '<font color="#f14c4c">* Vul alle verplichte velden in [' + tel + ']</font>';
	}
}
 function changeTekst(visible,hidden){
	document.getElementById(""+hidden).style.display = 'none';	
	document.getElementById(""+visible).style.display = '';
 }
 function switchCheck(which){
	if (which.className == "checkbox") {
		which.className = "checkbox_on";
		document.getElementById(which.id + "_hidden").value="Y";
	} else {
		which.className = "checkbox";
		document.getElementById(which.id + "_hidden").value="Y";
	}
}
function checkEmail(str){
	var testresults = false;
	//uitleg filter: minimaal 1 letter voor @ ; min 1 max 66 letters na @ ; min 2 max 6 letters na punt.
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
	if (filter.test(str)){
		testresults=true;
	}else{
		testresults=false;
	}
	return (testresults);
}	
function afmeldenSubmit(){
	tel=0;
	var color= '#AA0000';
	var normalcolor='#656565';
	if (document.getElementById("email").value =='' || !checkEmail(document.getElementById("email").value)) {
		tel++;		
		document.getElementById("email").className = 'contactformulier wrong';		
	} else	{ 
		document.getElementById("email").className = 'contactformulier';
	}
	if(tel==0){					
		document.getElementById("form").submit();
	} else {
		document.getElementById("formMelding").innerHTML = '<b>* Vul aub. een geldig adres in!</b>';
		document.getElementById("formMelding").style.display = '';
		return false;
	}	
}

function aanmeldenSubmit(){
	tel=0;
	var color= '#AA0000';
	var normalcolor='#656565';
	if (document.getElementById("voornaam").value =='') {				
		tel++;		
		document.getElementById("voornaam").className = 'contactformulier wrong';
	} else	{ 
		document.getElementById("voornaam").className = 'contactformulier';
	}
	if (document.getElementById("achternaam").value =='') {				
		tel++;		
		document.getElementById("achternaam").className = 'contactformulier wrong';
	} else	{ 
		document.getElementById("achternaam").className = 'contactformulier';
	}
	if (document.getElementById("email").value =='' || !checkEmail(document.getElementById("email").value)) {
		tel++;		
		document.getElementById("email").className = 'contactformulier wrong';		
	} else	{ 
		document.getElementById("email").className = 'contactformulier';
	}
	if(tel==0){					
		document.getElementById("form").submit();
	} else {
				document.getElementById("formMelding").innerHTML = '<b>* Vul aub. alle verplichte velden in [' + tel + ']</b>';
		document.getElementById("formMelding").style.display = '';
		return false;
	}	
}

function bedanktSubmit(){
	tel=0;
	var color= '#AA0000';
	var normalcolor='#656565';
	if (document.getElementById("email").value =='' || !checkEmail(document.getElementById("email").value)) {
		tel++;		
		document.getElementById("email").className = 'contactformulier wrong';		
	} else	{ 
		document.getElementById("email").className = 'contactformulier';
	}
	if (document.getElementById("voornaam").value =='') {
		tel++;		
		document.getElementById("voornaam").className = 'contactformulier wrong';		
	} else	{ 
		document.getElementById("voornaam").className = 'contactformulier';
	}
	if(tel==0){					
		document.getElementById("form").submit();
	} else {
		document.getElementById("formMelding").innerHTML = '<b>* Vul aub. een geldig adres in!</b>';
		document.getElementById("formMelding").style.display = '';
		return false;
	}	
}
function aanmeldSubmit(){ // Voor nieuwsbrief aanmeldform naar MuskitoMail
	tel=0;
	if (document.getElementById("last_name").value =='') {				
		tel++;		
		document.getElementById("last_name").className = 'txtInputWrong';
	} else	{ 
		document.getElementById("last_name").className = 'txtInput';
	}
	if (document.getElementById("free_field_1").value =='') {				
		tel++;		
		document.getElementById("free_field_1").className = 'txtInputWrong';
	} else	{ 
		document.getElementById("free_field_1").className = 'txtInput';
	}
	if (document.getElementById("email").value =='' || !checkEmail(document.getElementById("email").value)) {
		tel++;		
		document.getElementById("email").className = 'txtInputWrong';		
	} else	{ 
		document.getElementById("email").className = 'txtInput';
	}
	if(tel==0){
		return true;
	} else {
		return false;
	}	
}