// JavaScript Document
function testerAdress(formulaire){
 var prenom = formulaire.monprenom.value;
 var email = formulaire.monemail.value;
 var reponse = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
 
 if(prenom==""){
 	alert("Entrez votre prénom !");
	return false;
	}
 
 if(!reponse.test(email)){
      alert("Votre adresse email n'est pas valable !");
      return false;
 } else {
                 window.open("merci.htm", "", "width=550,height=150");
				 return true;
 }
}


function cacher(id) {
var elem = document.getElementById(id);
if ( elem.style.display == "hidden" ) {
elem.style.display="";
}
else {
elem.style.display="hidden";
}
}

var vis = new Array();

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function swap_couche(couche, rtl) {
	if (!(layer = MM_findObj('Layer' + couche))) return;
	if (vis[couche] == 'show'){
		layer.style.display = 'none';
		vis[couche] = 'hide';
	} else {
		layer.style.display = 'block';
		vis[couche] = 'show';
	}
}
layer = MM_findObj('Layer1');