var emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+([\.a-z]){3,5}$";
var postcodeCijfersReg = "^[0-9]{4}";
var postcodeLettersReg = "^[aA-zA]{2}";
var regexEmail = new RegExp(emailReg);
var regexPCCijfers = new RegExp(postcodeCijfersReg);
var regexPCLetters = new RegExp(postcodeLettersReg);

function checkComplete() {

  if (document.formulier.fNaam.value == "") {
    alert("Vul aub uw naam in");
    document.formulier.fNaam.focus();
    return false;
  }  
  else if (document.formulier.fAdres.value == "") {
    alert("Vul aub uw adres in");
    document.formulier.fAdres.focus();
    return false;
  }
  else if (document.formulier.fPostcode.value == "") {
    alert("Vul aub uw postcode in");
    document.formulier.fPostcode.focus();
    return false;
  }
  else if (document.formulier.fWoonplaats.value == "") {
    alert("Vul aub uw woonplaats in");
    document.formulier.fWoonplaats.focus();
    document.formulier.fWoonplaats.select();		
    return false;
  }   
  else if (document.formulier.fTelefoon.value == "") {
    alert("Vul aub uw telefoonnummer in");
    document.formulier.fTelefoon.focus();
    return false;
  }
  else if (!regexEmail.test(document.formulier.fEmail.value)) {
    alert("Vul aub uw emailadres in");
    document.formulier.fEmail.focus();
    document.formulier.fEmail.select();	
    return false;
  }           
  else {
  }
}

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 MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

function hideAllMenuLayers() {
	MM_showHideLayers('subnav2','','hide','subnav3','','hide','subnav4','','hide');
}