function $get(id){return document.getElementById(id);}

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];}
}

window.onload = function(){
MM_preloadImages('files/images/menu/m1_off.gif','files/images/menu/m2_off.gif','files/images/menu/m3_off.gif','files/images/menu/m4_off.gif','files/images/menu/m5_off.gif','files/images/menu/m6_off.gif','files/images/menu/m1_over.gif','files/images/menu/m2_over.gif','files/images/menu/m3_over.gif','files/images/menu/m4_over.gif','files/images/menu/m5_over.gif','files/images/menu/m6_over.gif','files/images/menu/m1_on.gif','files/images/menu/m2_on.gif','files/images/menu/m3_on.gif','files/images/menu/m4_on.gif','files/images/menu/m5_on.gif','files/images/menu/m6_on.gif');
}

function checkFormFields(){
da = false;
da1 = false;
da2 = false;
da3 = false;
da4 = false;

if(document.contactForm.naam.value !='') da1 = true;
if(document.contactForm.woon.value !='') da2 = true;
if(document.contactForm.tel.value !='') da3 = true;
if(document.contactForm.email.value !='') da4 = true;

if(da1 && da2 && da3 && da4) da=true;

if(da) $get('submitButtons').style.display = 'block';
}

// validate email adress ******************************************************************************************************
function emailCheck(emailStr) 
    {
        var emailPat=/^(.+)@(.+)$/
        var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
        var validChars="\[^\\s" + specialChars + "\]"
        var quotedUser="(\"[^\"]*\")"
        var atom=validChars + '+'
        var word="(" + atom + "|" + quotedUser + ")"
        var matchArray=emailStr.match(emailPat)
        if (matchArray==null) return false
        var user=matchArray[1]
        var domain=matchArray[2]
        var atomPat=new RegExp(atom,"g")
        var domArr=domain.match(atomPat)
        var len=domArr.length
        if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) return false
        if (len<2) return false

return true;
}

function zoomIMG(url,caption) {
  // var caption = 'test';
   var objLink = document.createElement('a');
   objLink.setAttribute('href',url);
   objLink.setAttribute('rel','lightbox');
   objLink.setAttribute('title',caption);
   Lightbox.prototype.start(objLink);
}