quick link drop down don't work

[Beermonster]

I first posted this on vb.com thinking it was a bug, but I'm not so sure it is now.

the quick link drop downs and all other's like search don't always seem to work for me, they work fine on until I view a thread and try to use them, I'm unable to moderate the thread's, close, move them etc because all that happens is when I press either Thread Tools / Search this Thread / Rate Thread / Display Modes it just takes me to the bottom of the page and I have no drop downs

My test forum seems to work fine, but it should be the same as my main forum but I may have installed a couple of hack on my forum before testing them on my test forum first.

Any help please