function submit_form()
{
  $('chargement').style.display='block';
  $('chargement').innerHTML='Traitement en cours... Merci de patienter';
  var url = 'mail-html.php';
 var mesChamps = Form.serialize(document.forms['envoyer']);
  var myAjax = new Ajax.Request(
      url,
      {
        method: 'post',
		postBody:mesChamps,
        onComplete: gestionReponse
      });
} 

function gestionReponse(xhr)
{
    if (xhr.status == 200)
    {
        $('chargement').innerHTML = xhr.responseText;
		if(xhr.responseText =="Le mail a été envoyé" || xhr.responseText=="Mail correctly sended"){
		$('nom').value='';
		$('prenom').value='';
		$('societe').value='';
		$('pays').value='';
		$('telephone').value='';
		$('email').value='';
		$('message').value='';
		}
		
    }
    else
    {
        $('chargement').innerHTML = xhr.status;

    }
}

   function reset_form()
{
$('chargement').innerHTML='';
$('chargement').style.display='none';
$('nom').value='';
$('prenom').value='';
$('societe').value='';
$('pays').value='';
$('telephone').value='';
$('email').value='';
$('message').value='';
}