function showList(x){
	var i = 1;
	for (i=1;i<=x;i++)	{
	  hide('sublist_'+i);
	  show('list_'+i);
	}
}
function showDiv(thediv){
	showList(aantal);
	hide(thediv.id);
 	show("sub" + thediv.id);
}
function hide(whichdiv){
  document.getElementById(whichdiv).style.display = 'none';
}
function show(whichdiv){
  document.getElementById(whichdiv).style.display = '';
}