function checkcv(element) {
  if ( document.getElementById(element).value == "" ) {
    document.getElementById("advice-required-text_6").style.visibility = "visible";
    return false;
  }
  else {
    document.getElementById("advice-required-text_6").style.visibility = "hidden";
  }
}

function checkregister(formulaire) {
  var form = document.getElementById(formulaire);
  var vide = "no";
  var compteur = 0;
  for ( i=0; i<=form.length-1; i++ ) {
    if ( (form[i].type == "text") || (form[i].type == "password") || (form[i].type == "select-one") ) {
      compteur++;
      if ( form[i].value == "" ) {
        vide = "yes";
        document.getElementById("required"+compteur).style.visibility = "visible";
      }
      else {
        document.getElementById("required"+compteur).style.visibility = "hidden";
      }
    }
  }
  
  if ( vide == "yes" ) return false;
}