// Vérification asyncrone de la validité de l'email du parrain.
function writediv(texte)
     {
     document.getElementById('sponsorship_emailbox').innerHTML = texte;
     }

function verifsponsorship_email(sponsorship_email) {
    if (sponsorship_email != '') {
        if (texte = file('verif_email_sponsorship.php?sponsorship_email='+escape(sponsorship_email))) {
            if (texte !== '') {
                writediv(texte);
            }
        }
    }
}
function file(fichier)
     {
     if(window.XMLHttpRequest) // FIREFOX
          xhr_object = new XMLHttpRequest();
     else if(window.ActiveXObject) // IE
          xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
     else
          return(false);
     xhr_object.open("GET", fichier , false);
     xhr_object.send(null);
     if(xhr_object.readyState == 4) return(xhr_object.responseText);
     else return(false);
     }