function showMenu(menuNumber, eventObj) {
	if(menuNumber==parseInt(menuNumber)){
		hideAllMenus();
    	var menuId = 'menu' + menuNumber;
	}
	else{
		var menuId = menuNumber;
	}
    if(changeObjectVisibility(menuId, 'visible')) {
		var menuTitle = getStyleObject(menuId);
		menuTitle.backgroundColor = '#6692CE';
		//eventObj.cancelBubble = true
		return true;
    } 
	else {
		return false;
    }
}
var numMenus = 6;
//pour effacer tous les sous menu
function hideAllSousMenus() {
	//effacage des sousmenu
	var divs = document.getElementsByTagName('div');
	for (var i = 0; i < divs.length; i++){
		if (divs[i].id.indexOf("sousMenu_") == 0){
			changeObjectVisibility(divs[i].id, 'hidden');
		}
	}
}
function hideAllMenus() {
	 hideAllSousMenus();
	 var divs = document.getElementsByTagName('div');
	for (var i = 0; i < divs.length; i++){
		if (divs[i].id.indexOf("menu") == 0){
			changeObjectVisibility(divs[i].id, 'hidden');
		}
	}
}
//fonction pour changer les images de fond de la partie gauche
function changeFond(nomFond){
	//changement des fonds
	var nava = (document.layers);
	var dom = (document.getElementById);
	var iex = (document.all);
	if (nava){
		document.gaucheHaut.className="fond_"+nomFond+"01";
		document.gaucheMilieu.className="fond_"+nomFond+"02";
		document.gaucheBas.className="fond_"+nomFond+"03";
	}
	else if (dom){
		document.getElementById("gaucheHaut").className="fond_"+nomFond+"01";
		document.getElementById("gaucheMilieu").className="fond_"+nomFond+"02";
		document.getElementById("gaucheBas").className="fond_"+nomFond+"03";
	}
	else if (iex){
		gaucheHaut.className="fond_"+nomFond+"01";
		gaucheMilieu.className="fond_"+nomFond+"02";
		gaucheBas.className="fond_"+nomFond+"03";
	}
}
document.onclick = hideAllMenus;
var aNomMenu=new Array("de_acces","de_presentation","de_hebergement","de_activites","de_manif","de_sortir");
var aImgSelectMenu=new Array("medias/accueil/de_acces_select.gif","medias/accueil/de_acces_select.gif","medias/accueil/de_acces_select.gif","medias/accueil/de_acces_select.gif","medias/accueil/de_acces_select.gif","sortir");
var aMenu=new Array("menu1","menu2","menu3","menu4","menu5", "menu6");
//définition de la position haute des calques
var nava = (document.layers);
var dom = (document.getElementById);
var iex = (document.all);
var xmenu0="";
var xmenu1="";
var xmenu2="";
var xmenu3="";
var xmenu4="";
var xmenu5="";
function initVars(){
	if (nava){
		document.gaucheHaut.className="fond_"+nomFond+"01";
		document.gaucheMilieu.className="fond_"+nomFond+"02";
		document.gaucheBas.className="fond_"+nomFond+"03";
		xmenu0=document.menu1["offsetLeft"];
		xmenu1=document.menu2["offsetLeft"];
		xmenu2=document.menu3["offsetLeft"];
		xmenu3=document.menu4["offsetLeft"];
		xmenu4=document.menu5["offsetLeft"];
		xmenu5=document.menu6["offsetLeft"];
	}
	else if (dom){
		xmenu0=document.getElementById("menu1")["offsetLeft"];
		xmenu1=document.getElementById("menu2")["offsetLeft"];
		xmenu2=document.getElementById("menu3")["offsetLeft"];
		xmenu3=document.getElementById("menu4")["offsetLeft"];
		xmenu4=document.getElementById("menu5")["offsetLeft"];
		xmenu5=document.getElementById("menu6")["offsetLeft"];
	}
	else if (iex){
		gaucheHaut.className="fond_"+nomFond+"01";
		gaucheMilieu.className="fond_"+nomFond+"02";
		gaucheBas.className="fond_"+nomFond+"03";
		xmenu0=menu1["offsetLeft"];
		xmenu1=menu2["offsetLeft"];
		xmenu2=menu3["offsetLeft"];
		xmenu3=menu4["offsetLeft"];
		xmenu4=menu5["offsetLeft"];
		xmenu5=menu6["offsetLeft"];
	}
}
function placeMenu(){
}
<!--claques dynamiques -->
function placeCalque(ar){
	function Plateforme(){
	  if (navigator.appVersion.indexOf("Win") > -1) {return "Windows";}
	  if (navigator.appVersion.indexOf("Macintosh") > -1) {return "Macintosh";}
	  if (navigator.appVersion.indexOf("X11") > -1) {return "Unix";}
	  if (navigator.appVersion.indexOf("Unix") > -1) {return "Unix";}
	  if (navigator.appVersion.indexOf("Linux") > -1) {return "Unix";}
		return "Unknown";
	}
	maitre = Plateforme();
	if (!window.innerWidth){			
		window.innerWidth = document.body.offsetWidth;
	}
	var nPosX;
	for (var i = 0; i < ar.length; i++){
		switch(ar[0]){
			case 'menu1' : nPosY = 63; decal = 199; 	break;
			case 'menu2' : nPosY = 63; decal = 296; 	break;
			case 'menu3' : nPosY = 63; decal = 398; 	break;
			case 'menu4' : nPosY = 63; decal = 504; 	break;
			case 'menu5' : nPosY = 63; decal = 602; 	break;
			case 'menu6' : nPosY = 63; decal = 671; 	break;
		}
		if (maitre == "Macintosh" || navigator.appName=="Netscape") {
			mac = 9;
		}else {
			mac = 0;
		}
		if(window.innerWidth<777){
			nPosX  =82+ decal
		}else {
			nPosX  =( (window.innerWidth - 777) / 2)+ decal + mac;
		}
		document.getElementById(ar[i]).style.left = nPosX
		document.getElementById(ar[i]).style.top = nPosY
	}
	return true;
}
function placeSousMenu(idSousMenu, idMenu, objet){
	function Plateforme(){
	  if (navigator.appVersion.indexOf("Win") > -1) {return "Windows";}
	  if (navigator.appVersion.indexOf("Macintosh") > -1) {return "Macintosh";}
	  if (navigator.appVersion.indexOf("X11") > -1) {return "Unix";}
	  if (navigator.appVersion.indexOf("Unix") > -1) {return "Unix";}
	  if (navigator.appVersion.indexOf("Linux") > -1) {return "Unix";}
		return "Unknown";
	}
	maitre = Plateforme();
	window.innerWidth = document.body.offsetWidth;
	var nPosX;
	switch(idMenu){
		case 'menu1' : decal = 199; 	break;
		case 'menu2' : decal = 262; 	break;
		case 'menu3' : decal = 371; 	break;
		case 'menu4' : decal = 475; 	break;
		case 'menu5' : decal = 561; 	break;
		case 'menu6' : decal = 606; 	break;
	}
	nPosY=63;
	var largeur=document.getElementById(idMenu).clientWidth;
	if(navigator.appName=="Netscape"){
		largeur=150;
	}
	var trace="";
	for (var k in document.getElementById(idMenu)){
		trace+=k +" -> "+document.getElementById(idMenu)[k]+"\n";
	}
	//document.getElementById("gaucheMilieu").innerHTML="<font color=white"+trace+"</font>";
	var yOffs = 0;
	var tmp = objet.split("_");
	for (var i = 0; i < tmp[2]; i++){
		yOffs += document.getElementById(tmp[0] + "_" + tmp[1] + "_" + i).offsetHeight +1
	}
	/*
	trace+=objet + "  ->  "+yOffs+"\n";
	/*
	for(i in document.getElementById(objet).style){
		//trace+=i+"  ->  "+document.getElementById(objet)[i]+"\n";
		trace+=i+"  ->  "+document.getElementById(objet)[i]+"\n";
	}
	document.getElementById('gaucheMilieu').innerHTML=trace;
	//alert("objet -> "+objet);
	*/
	decal+=largeur;
	nPosY=63;
	if (maitre == "Macintosh" || navigator.appName=="Netscape") {
		mac = 9;
	}else {
		mac = 0;
	}
	if(window.innerWidth<777){
		nPosX  =82+ decal
	}else {
		nPosX  =( (window.innerWidth - 777) / 2)+ decal + mac;
	}
	document.getElementById(idSousMenu).style.left = nPosX
	document.getElementById(idSousMenu).style.top = nPosY + yOffs
	return true;
}