function showlayer(layer){
var myLayer = document.getElementById(layer).style.display;
if(myLayer=="none"){
document.getElementById(layer).style.display="block";
document.contactform.contactnom.focus();
document.getElementById('milieuGC').style.display="none";
} else {
document.getElementById(layer).style.display="none";
document.getElementById('milieuGC').style.display="block";
}
}

function showlayer2(layer){
var myLayer = document.getElementById(layer).style.display;
if(myLayer=="none"){
document.getElementById(layer).style.display="block";
document.getElementById('milieuGC').style.display="none";
} else {
document.getElementById(layer).style.display="none";
document.getElementById('milieuGC').style.display="block";
}
}

function showlayerpochette(layer){
var myLayer = document.getElementById(layer).style.display;
if(myLayer=="none"){
document.getElementById(layer).style.display="block";
document.getElementById('teaser').style.display="none";
} else {
document.getElementById(layer).style.display="none";
document.getElementById('teaser').style.display="block";
}
}

function showlayerrobert(){
var myLayer = document.getElementById('milieuGC_robert').style.display;
if(myLayer=="none"){
document.getElementById('milieuGC_robert').style.display="block";
document.getElementById('milieuGC_richard').style.display="none";
document.getElementById('milieuGC_presse').style.display="none";
document.getElementById('milieuGC_contact').style.display="none";
document.getElementById('milieuGC').style.display="none";

} else {
document.getElementById('milieuGC_robert').style.display="none";
document.getElementById('milieuGC_richard').style.display="none";
document.getElementById('milieuGC_presse').style.display="none";
document.getElementById('milieuGC_contact').style.display="none";
document.getElementById('milieuGC').style.display="block";
}
}

function showlayerrichard(){
var myLayer = document.getElementById('milieuGC_richard').style.display;
if(myLayer=="none"){
document.getElementById('milieuGC_richard').style.display="block";
document.getElementById('milieuGC_robert').style.display="none";
document.getElementById('milieuGC_presse').style.display="none";
document.getElementById('milieuGC_contact').style.display="none";
document.getElementById('milieuGC').style.display="none";

} else {
document.getElementById('milieuGC_richard').style.display="none";
document.getElementById('milieuGC_robert').style.display="none";
document.getElementById('milieuGC_presse').style.display="none";
document.getElementById('milieuGC_contact').style.display="none";
document.getElementById('milieuGC').style.display="block";
}
}

function showlayerpresse(){
var myLayer = document.getElementById('milieuGC_presse').style.display;
if(myLayer=="none"){
document.getElementById('milieuGC_presse').style.display="block";
document.getElementById('milieuGC_contact').style.display="none";
document.getElementById('milieuGC').style.display="none";

} else {
document.getElementById('milieuGC_presse').style.display="none";
document.getElementById('milieuGC_contact').style.display="none";
document.getElementById('milieuGC').style.display="block";
}
}

function showlayercontact(){
var myLayer = document.getElementById('milieuGC_contact').style.display;
if(myLayer=="none"){
document.getElementById('milieuGC_presse').style.display="none";
document.getElementById('milieuGC_contact').style.display="block";
document.getElementById('milieuGC').style.display="none";

} else {
document.getElementById('milieuGC_presse').style.display="none";
document.getElementById('milieuGC_contact').style.display="none";
document.getElementById('milieuGC').style.display="block";
}
}