function valid_inscription(form_name,langue)
{
  var email_field = form_name.email;
  var email_str = email_field.value;

  var url_field = form_name.url_site;
  var url_str = url_field.value;

  var nom_field = form_name.nom_site;
  var nom_str = nom_field.value;

  var pwd_field = form_name.password;
  var pwd_str = pwd_field.value;

  if (nom_str=="")
  {
    if (langue=="en")
    {
      alert("Site name is mandatory");
    }
    else
    {
      alert("Le nom du site est obligatoire");
    }
    nom_field.focus();
    nom_field.select();
    return false;
  }

  if ((url_str=="")||(url_str=="http://"))
  {
    if (langue=="en")
    {
      alert("The URL of the website is incorrect");
    }
    else
    {
      alert("L'url du site n'est pas correcte");
    }
    url_field.focus();
    url_field.select();
    return false;
  }

  if (pwd_str=="")
  {
    if (langue=="en")
    {
      alert("Password is mandatory");
    }
    else
    {
      alert("Vous devez choisir un mot de pass");
    }
    pwd_field.focus();
    pwd_field.select();
    return false;
  }

  if (window.RegExp) 
  {
    var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";
    var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$";
    var reg1 = new RegExp(reg1str);
    var reg2 = new RegExp(reg2str);
    if (!reg1.test(email_str) && reg2.test(email_str)) {
      return true;
    }
    if (langue=="en")
    {
      alert("Email is incorrect");
    }
    else
    {
      alert("L'email n'est pas correct");
    }
    email_field.focus();
    email_field.select();
    return false;
  } 
  else 
  {
    if(email_str.indexOf("@") >= 0) 
    {
      return true;
    }  
    if (langue=="en")
    {
      alert("Email is incorrect");
    }
    else
    {
      alert("L'email n'est pas correct");
    }
    email_field.focus();
    email_field.select();
    return false;
  }
  return true;
}

function change_categorie(langue)
{
  var x=document.getElementById("categorie");
  var url ="index.php?id_categorie="+x.options[x.selectedIndex].value+"&langue="+langue;
  window.location=url;
}