rem: transaction = gsb_transactions_list_get_current_transaction_next ( no_account );
add: transaction = gsb_transactions_list_get_transaction_next ( gsb_account_get_current_transaction ( no_account ));
context: gboolean gsb_transactions_list_current_transaction_down ( gint no_account ){    struct structure_operation *transaction;    transaction = gsb_transactions_list_get_current_transaction_next ( no_account );    if ( transaction )	gsb_transactions_list_set_current_transaction ( transaction,							no_account );    return FALSE;}