I’ve put my categories side box into the menu. I know theres other ways of achieving the menu i want, but im following this method through aswell as a learning exercise.

Firebug is telling me the following;
<div id="categories" class="rightBoxContainer" style="width: 150px;">

How can I remove this "width: 150px;". Its not in any style sheet so im guessing its in the php somewhere.
Thanks
James