function ValideFormulaireAlbumsPhotos() 

{
    var oForm = document.forms["formulaire_telechargement_albums_photos"];

    	var sRadioCategorie;
	var bRadioCategorie = false;

	for (i=0;i<oForm.elements.length;i++)
	{

        if ((oForm.elements[i].type == 'radio') && (oForm.elements[i].name == 'nom_album'))
        {
            if (oForm.elements[i].checked)
            {
                sRadioCategorie = oForm.elements[i].value;
                bRadioCategorie = true;
                break;
            }
        }
    }
    if (!bRadioCategorie)
    {
    	alert("Vous devez choisir un album photo !");
    	return false;
    }
	
   return true;
}