list = event_viewer_data->event_fields_queue->head;
data = (EventFields*)g_list_nth_data(list,0);
data1 = (EventFields*)g_list_nth_data(list,event_viewer_data->event_fields_queue->length-1);
list = event_viewer_data->event_fields_queue->head;
data = (EventFields*)g_list_nth_data(list,0);
data1 = (EventFields*)g_list_nth_data(list,event_viewer_data->event_fields_queue->length-1);