Overwriting options

[squishi]

The forumjump is turned off on my board (in the options - vbulletin options > general settings).
I want to create a small plugin to enable the forumjump menu for a certain style only.
My question: where would I hook the plugin?

The code would look like this:

PHP Code:

if(STYLEID == 7) $vbulletin->options['useforumjump'] = 1; 


I've tried several hooks (global_start, init_startup, forumdisplay_start, ...), and I using this in the template:

{$vbulletin->options[useforumjump]}

Menu: $forumjump

I can see that the setting is sometimes changed.
But the forumjump menu is not constructed.