[all-the-vb]

open (FORUMDISPLAY) templates:

find:

<select name="daysprune" style="width:125px">

after that add:

<option value="900">15 min</option>
<option value="1800">30 min</option>
<option value="2700">45 min</option>
<option value="3600">1 Hours</option>
<option value="7200">2 Hours</option>
<option value="21600">6 Hours</option>
<option value="43200">12 Hours</option>

open forumdisplay.php

find:

PHP Code:

        $datecut = '';
        $show['noposts'] = true;
    } 


after that add:

PHP Code:

$all_the_vb = array(900,1800,2700,3600,7200,21600,43200);

if(in_array ($daysprune,$all_the_vb))
    {
        $datecut = "AND lastpost >= " . (TIMENOW - ($daysprune));
        $show['noposts'] = false;
}