function Bposition(){
var lavariable = document.getElementById('conteneur');
posGauche = lavariable.offsetLeft;
posTop = lavariable.offsetTop;
}

function deroule(element){
Bposition();

if(element == 1){retrait = -7;}else{
if(element == 2){retrait = 28;}else{
if(element == 3){retrait = 126;}else{
if(element == 4){retrait = 201;
}}}}

for(x=1;x<5;x++){
if(element != x){
document.getElementById('liste'+x).style.display = 'none';
}
}

liste = document.getElementById('liste'+element);
liste.style.position = 'absolute';
liste.style.top = '117px';
liste.style.left = posGauche + 210*element - retrait +'px';
liste.style.display = 'block';
liste.style.width = 560/4-4 +'px';
}

function cacheztout(){
for(x=1;x<5;x++){
document.getElementById('liste'+x).style.display = 'none';
}
}

function request(url,cadre){
var XHR = null;
if(window.XMLHttpRequest){
XHR = new XMLHttpRequest();
}
else{
if(window.ActiveXObject){
XHR = new ActiveXObject("Microsoft.XMLHTTP");
}
else{
return;
}
}
XHR.open("GET",url, true);
XHR.onreadystatechange = function attente() {
if(XHR.readyState == 4)     {

document.getElementById(cadre).innerHTML = XHR.responseText;
   }
}
XHR.send(null);
return;
}

function imgsitemap(){
var lavariable = document.getElementById('conteneur');
posGauche = lavariable.offsetLeft;
posTop = lavariable.offsetTop;

document.getElementById('id_a_sitemap').style.position='absolute';
document.getElementById('id_a_sitemap').style.top='123px';
document.getElementById('id_a_sitemap').style.left=posGauche+60+'px';
document.getElementById('id_a_sitemap').style.display='block';
}