<!--
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 DBP_swapImgRestore(id) { //v1.0
	id.style.filter = "";
}
function DBP_swapImgBlur(id) { //v1.0
	id.style.filter = "blur(add=0,direction=255,strength=5)";
}

function show(id){
	document.getElementById(id).style.display = "";
	document.getElementById(id).style.visibility = "visible";
}
function hide(id){
	document.getElementById(id).style.display = "none";
	document.getElementById(id).style.visibility = "hidden";
}
function showOfferte(){
	show('tr_telefoon');	
	show('tr_adres');	
	show('tr_postcode');	
	show('tr_plaats');	
	show('tr_schets');	
}
function hideOfferte(){
	hide('tr_telefoon');	
	hide('tr_adres');	
	hide('tr_postcode');	
	hide('tr_plaats');	
	hide('tr_schets');	
}

function checkForm(){
	if(document.getElementById('onderwerp').value == "Offerte aanvraag"){
		if(document.getElementById('naam').value == "") return false;
		if(document.getElementById('email').value == "") return false;
		if(document.getElementById('adres').value == "") return false;
		if(document.getElementById('postcode').value == "") return false;
		if(document.getElementById('woonplaats').value == "") return false;
		if(document.getElementById('telefoon').value == "") return false;
		if(document.getElementById('schets').value == "") return false;
	} else {
		if(document.getElementById('naam').value == "") return false;
		if(document.getElementById('email').value == "") return false;
		if(document.getElementById('bericht').value == "") return false;
	}
	return true;
}