Problem with cookies tdxsess and tdxsig

[insex]

I go to the website clicked skim traders.
then exit site, went back site and tradex put new cookie, wtf?
I click skim again and then open the same traders.

p.s. sorry for bad english...

[insex]

Found a solution!
<?php if ($_COOKIE["tdxsig"] == "") include "tx/in.php"; ?>
it checks for the presence of a cookie.
I hope this is the correct method?

[insex]

need to change this value
$session_length = 3600 > $session_length = 86400
in files in.php out.php image.php