Layers not showing

Hi

I am busy working on a scene with multiple layers. I was in one doing some modelling. When i was finished I wanted to switch to another layer but found that the little box with all the layer buttons was gone.

Pls help!!!
BlenderGeek

SOLVED: I was hiding all the other objects by accident.

You may be local view mode. Toggle between local and global view with the numpad / key
http://wiki.blender.org/index.php/Doc:2.6/Manual/3D_interaction/Navigating/Global_or_Local_View