I had tried Shift+TAB and that didn't affect anything. The pallettes are fine, it's just the toolbox. As far as i'm aware i didn't change the resolution...
And i tried resetting the preferences as you suggested but it didn't change anything.
Thank you very much for your help, though!
Edit: Nevermind, i was messing around with the general preferences and found a button to reset the pallette locations to default, and it reappeared at last! I have to say i wouldn't have even thought of doing this if it wasn't for your comment, so thank you.