var ns = (navigator.appName=="Netscape" && parseInt(navigator.appVersion)>=4)?true:false
var ie = (navigator.appName=="Microsoft Internet Explorer" && parseInt(navigator.appVersion)>=4)?true:false
var ns6 = (document.getElementById&&!document.all)

var safari = new String(navigator.appVersion);
var expr=/safari/gi;
Saf = safari.search(expr);

var navigsaf = (Saf!=-1)?true:false;


var namelayer="";

var layer2="";
var layer3="";
var menutimer=0;
var imgtimer=0;
var menuchange;

function showmenu2(idlayer,smenu){
	
	layermenu=getLayer2(smenu)
	
	if(layermenu.className==smenu || layermenu.className==smenu+"2"){
		layermenu.className=smenu+"2";
		clearTimeout(menutimer);
		if (getLayer2(idlayer)!=layer2 && layer2!=""){
		 layer2.style.visibility = "hidden";
		 layermenu=getLayer2(menuchange)
		 layermenu.className=menuchange;
		}
		showmenu(idlayer,smenu);
	}
}

function showmenu(layer,smenu){
	layer2=getLayer2(layer);
	menuchange=smenu;
	if (layer2.style.visibility=="visible" && menutimer > 0) clearTimeout(menutimer);
	layer2.style.visibility = "visible";
}

function hidemenu2(idlayer,menu){
	layermenu=getLayer2(menu)
	if(layermenu.className==menu+"2"){
	
		menutimer=setTimeout('hidemenu()',100);
	}
}

function hidemenu(){
	layermenu=getLayer2(menuchange)
	layermenu.className=menuchange;
	layer2.style.visibility = "hidden";
	clearTimeout(menutimer);
}


function getLayer2(name) {
  if (ie)
    return eval('document.all.' + name);
	if (ns6)
		return document.getElementById(name);
  return null;
}




function getLayer(name) {
  if (ie)
    return eval('document.all.' + name);
	if (ns6)
		return document.getElementById(name);
  return null;
}

function getHeight(){
	if(ns6) haut=window.innerHeight;
	else if (ie  && navigator.appVersion.indexOf("Macintosh") != -1) haut =document.body.offsetHeight+5;
	else haut = document.documentElement.clientHeight;
	
	return haut;
}