function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}


function getSecondStyleSheet() {
  var i, a, count;
  count=0;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") != -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function switchStyleSheet(){
	var active = getActiveStyleSheet();
	var preferred = getPreferredStyleSheet();
	var second = getSecondStyleSheet();

<!-- document.write(active);
document.write(active);
document.write(preferred);
document.write(second);
setActiveStyleSheet("acces");

	if( active == "acces"){
	  setActiveStyleSheet("acces");
	}else{
	  setActiveStyleSheet("default");
	}
document.write(active);
title="acces";
  createCookie("style", title, 365);
-->
}

function switchStyle() {
	var cookie = readCookie("style");

	var active = getActiveStyleSheet();
        var preferred = getPreferredStyleSheet();
        var second = getSecondStyleSheet();

	var title = active == getPreferredStyleSheet() ? getSecondStyleSheet() : getPreferredStyleSheet();


/*	alert(active+" "+ preferred+" "+ second+" "+ title);*/
	setActiveStyleSheet(title);
/*	createCookie("style", title, 365);*/

	return true;
}

function valider() {
var form_err = " "
if ( document.ecrire.email.value == "") {
form_err = "Email invalide ! - ";
}
var verim = 0;
for (i=1; i<document.ecrire.email.value.length; i++) {
if ( document.ecrire.email.value.charAt(i) == "@") {
verim = 1;
}}
if ( verim == 0) {
form_err = "Email invalide ! - ";
}
if ( document.ecrire.nom.value.length < 1) {
form_err += "Il manque le Nom. - ";
}
if ( document.ecrire.prenom.value.length < 1) {
form_err += "Il manque le Prenom. ";
}
if ( form_err != " ") {
alert(form_err);
return false;
}
return true
}



window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}
window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);