print("<h1>$title_tail</h1>\n");
$result=db_query("select year,month,month_last,contents from $tb_obsah"
- .($year ? " where year='$year'" : "")
- .($month ? " and month='$month'" : "")
+ .($year ? " where year=$year" : "")
+ .($month ? " and month=$month" : "")
." order by year,month"
);
if (!mysql_num_rows($result))