Error mailbox

[Narmotor]

hi. I have problem.

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http://sait/mailbox.php?inbox
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Fatal error:  Call to undefined function begin_table() in Z:\home\tbdev\www\mailbox.php  on line 313
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312. begin_form();
313. begin_table();
 $table['&nbsp;']  = th("<input type=\"checkbox\" onClick=\"toggleChecked(this.checked);this.form.remove.disabled=true;\">", 1);
 $table['Sender']  = th_left("Sender",'sender');
 $table['Sent_to'] = th_left("Sent To",'sendto');
 $table['Subject'] = th_left("Subject",'subject');
 $table['Date']    = th_left("Date",'added');
 table($table, $tablefmt);
 
 $res = mysql_query("SELECT * FROM messages WHERE $where $order $limit") or sqlerr(__FILE__, __LINE__);
 while ($arr = mysql_fetch_assoc($res))

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help it is DEFAULT code... TT 2.06 with off sait