function empfehlung()
		{ 
		window.open("http://www.construktiv.com/php/vbn/empfehlung/empfehlung.php?url=","Weiterempfehlung","width=350,height=345,resize=no,scrollbars=no,menubar=no,directories=no");
		}
		
function changepic1(where, onoff)
{
  if (onoff)
    document.getElementById(where).src="images/navi/fahrplan_over.gif";
  else
    document.getElementById(where).src="images/navi/fahrplan.gif";
}
function changepic2(where, onoff)
{
  if (onoff)
    document.getElementById(where).src="images/navi/tickets_over.gif";
  else
    document.getElementById(where).src="images/navi/tickets.gif";
}
function changepic3(where, onoff)
{
  if (onoff)
    document.getElementById(where).src="images/navi/extras_over.gif";
  else
    document.getElementById(where).src="images/navi/extras.gif";
}
function changepic4(where, onoff)
{
  if (onoff)
    document.getElementById(where).src="images/navi/infos_over.gif";
  else
    document.getElementById(where).src="images/navi/infos.gif";
}

function montre(id) {
 if (document.getElementById) {
  document.getElementById(id).style.display="block";
} else if (document.all) {
  document.all[id].style.display="block";
} else if (document.layers) {
  document.layers[id].display="block";
} } 

function cache(id) {
 if (document.getElementById) {
  document.getElementById(id).style.display="none";
} else if (document.all) {
  document.all[id].style.display="none";
} else if (document.layers) {
  document.layers[id].display="none";
} }