function latenzien(veld)
{
var x = document.addlink.elements[veld].selectedIndex;
var idee = document.addlink.linkchoice.options[x].value;
 
document.getElementById("banner").style.display = 'none';
document.getElementById("tekst").style.display = 'none';
document.getElementById("keuze").style.display = 'none';
 
document.getElementById(idee).style.display = 'block';
}