<div class="title-menu">Kategori</div>
<div style="overflow:auto;width:200px;height:250px;padding:1px;margin:10px auto;border:1px solid #eee">
<?php
  include "config.php";

    $sql = mysql_query("SELECT * FROM kategori");
    while($data=mysql_fetch_array($sql))
    {
        echo "<li>".$data['nama_kat'].""; // menampilkan kategori

        $sql2 = mysql_query("SELECT * FROM subkategori WHERE id_kat = '".$data['id_kat']."'"); // menampilkan sub kategori
        if($sql2)
        {
            echo "<ul>";
                while($data2=mysql_fetch_array($sql2))
                {
                    echo "<li>".$data2['nama_sub']."</li>";
                }
            echo "</ul>";
        }
            $sql3 = mysql_query("SELECT * FROM supersubkategori WHERE id_kat = '".$data['id_kat']."'"); // menampilkan sub2 kategori
            if($sql3)
            {
                echo "<ul>";
                    while($data3=mysql_fetch_array($sql3))
                    {
                        echo "<li><a href='cat.php?kategori=$data3[nama_supersub]'>".$data3['nama_supersub']."</a></li>";
                    }
                echo "</ul>";
            }

        else
        {
            echo "</li>";
        }

    }
?>
</div>