Pulling current forumid from forumdisplay.php?

[RetroDreams]

I'm trying to write a mini-mod for vBAdvanced so I can have a custom column per forum. I was able to successfully do this in vBulletin 3.x but the code no longer works for vBulletin 3.5.

Does anyone have any ideas how I can pull the current forumid from forumdisplay? Below is the code I used in vBulletin 3.0.

PHP Code:

if (isset($f)) 
{ 
    $forumid = intval($f); 
} 
switch($forumid) 
{ 
    case 1: 
        blah blah;
        break;
    default:
        blah blah blah;
        break;
}