function doPrive() {
  var oDiv=document.getElementById("para0129");
  oDiv.style.display="none";
  oDiv.getElementsByTagName("input")[0].removeAttribute("class");  
  oDiv.getElementsByTagName("input")[0].removeAttribute("className");
  oDiv.getElementsByTagName("input")[0].removeAttribute("required");
  document.getElementById("para0110").getElementsByTagName("label")[0].innerHTML="Privéadres: *"

  var oDiv=document.getElementById("para0117");
  oDiv.style.display="none";
  oDiv.getElementsByTagName("input")[0].removeAttribute("class");  
  oDiv.getElementsByTagName("input")[0].removeAttribute("className");
  oDiv.getElementsByTagName("input")[0].removeAttribute("required");
  document.getElementById("para0110").getElementsByTagName("label")[0].innerHTML="Privéadres: *"

  var oDiv=document.getElementById("para0118");
  oDiv.style.display="none";
  oDiv.getElementsByTagName("input")[0].removeAttribute("class");  
  oDiv.getElementsByTagName("input")[0].removeAttribute("className");
  oDiv.getElementsByTagName("input")[0].removeAttribute("required");
  document.getElementById("para0110").getElementsByTagName("label")[0].innerHTML="Privéadres: *"

} 

function doZakelijk() {
  var oDiv=document.getElementById("para0129");
  oDiv.style.display="block";
  oDiv.getElementsByTagName("input")[0].className="required";
  document.getElementById("para0110").getElementsByTagName("label")[0].innerHTML="Adres: *"

  var oDiv=document.getElementById("para0117");
  oDiv.style.display="block";
  oDiv.getElementsByTagName("input")[0].className="required";
  document.getElementById("para0110").getElementsByTagName("label")[0].innerHTML="Adres: *"

  var oDiv=document.getElementById("para0118");
  oDiv.style.display="block";
  oDiv.getElementsByTagName("input")[0].className="required";
  document.getElementById("para0110").getElementsByTagName("label")[0].innerHTML="Adres: *"

} 

function Kosten() {
 var oSelect=document.getElementById("id0101");
 var cOptions=oSelect.options;  //cOptions is verzameling van opleidingen in selectbox
// document.getElementById("id0131").setAttribute("value",cOptions[oSelect.selectedIndex].value.split("|")[0]);
 document.forms[0].input0131.value=cOptions[oSelect.selectedIndex].value.split("|")[0];
 document.forms[0].input0131.setAttribute("readonly","readonly");
}