var sEnv=/\/en\//i.test(document.location.href)?"en":"nl";
var rEng=new RegExp("\_eng\.","gi");
function setLanguage(a) {
  try {
    var aPage=a.href.split(/\//);
    var sPage=aPage.pop();
    if(rEng.test(a.href)) {
      if(sEnv!="en") a.href="en/"+sPage;
    } else {
      if(sEnv!="nl") a.href="../"+sPage;
    } 
  } catch(e) {
    alert(e);
  }
}