Переход к подкатегориям в галерее изображений

function write_link_big_foto($subdir,$num) {
$page = 1;
//include('dirs.php');
//=======================================================

$lnk = explode(".",$_GET['act']);

$sub1 = $lnk[0];

//категория //подкатегория
$comments = array ( "razvl" => array ( 1 => "polit",
2 => "katok"
),
"frendz" => array ( 1 =>"guljanki",
2 =>"kafe",
3 =>"rabota"
),

"fotki" => array ( 1 =>"gorod",
2 =>"priroda"
),

"prikols" => array ( 1 =>"tolstii"
)

);

$fldr = $comments[$sub1][$num];


//=======================================================

$tmp = $subdir.$num.".jpg";

$image = basename($tmp);

$act = $sub1.".".$fldr;



if ($act == $_GET['act'] || $_GET['act'] == "" || $fldr == "" || $fldr == $act) {


$stat = "view";

$act = "";

}

else

{
$stat = "prev";
};

print "<a href=\"index.php?page_id=".$_GET['page_id']."&cat=".$_GET['cat']."&page=$page&img=$image&stat=$stat&act=$act\" style=\"text-decoration:none;border:0px;\">

<img src=\"$subdir$num.png\" style=\"text-decoration:none;border:0px; class=\"img_prev\" alt=\"\" />

</a>";

}

<table>
<tr>
<td><? if (file_exists($subdir.intval($num-11).$f_ext)) {write_link_big_foto($subdir,intval($num-11));} ?></td>
<td><? if (file_exists($subdir.intval($num-10).$f_ext)) {write_link_big_foto($subdir,intval($num-10));} ?></td>
<td><? if (file_exists($subdir.intval($num-9).$f_ext)) {write_link_big_foto($subdir,intval($num-9));} ?></td>
</tr>