// jast setup form 
_.FormValidator.setup('form_coreLogin',{useAlertToNotify: false, useElementToNotify: true, notifyElementId: 'coreAdminError', setFocusOnErrorField: true, errorClassForErrorItem: 'errorFormField'});

// controllo se campi vuoti
_.FormValidator.validCondition('form_coreLogin', 'username', MATCH_EMPTY, null, usernameEmpty);
_.FormValidator.validCondition('form_coreLogin', 'password', MATCH_EMPTY, null, passwordEmpty);

// controllo lunghezza minima dei campi
_.FormValidator.validCondition('form_coreLogin', 'username', MATCH_LT_LEN, 5, usernameNotToLong);
_.FormValidator.validCondition('form_coreLogin', 'password', MATCH_LT_LEN, 8, passwordNotToLong);