function search() {

    var _cat = null;
    if (document.getElementById("ctl00_list_categorie") == null) {
        _cat = document.getElementById("list_categorie").value;
    } else {
        _cat = document.getElementById("ctl00_list_categorie").value;
    }
    var _nome = document.getElementById("txt_nome").value;
    location.href = "/site/pages/ricerca_toscana_lovers.aspx?CATEGORIA=" + _cat + "&NOME=" + _nome;
    
}