function suscribirBoletin(){
  this.mensaje = "";
  this.url = "www.contact-mailing.com";
  this.usuario="";
  this.categoria = 0;
}

suscribirBoletin.prototype.suscribir = function (email) {    
    if (!isEml($.trim(email))) {
        alert(this.mensaje);
    } else {
        window.open("http://" + this.url + "/public/insertarContacto.aspx?idUsu=" + this.usuario + "&idCat=" + this.categoria + "&mailCon=" + escape(email) + "", "", "width=200,height=60,resizable=no,menubar=no,scrollbars=no,screenX=400,screenY=300'");
    }
    return false;

}