CS5.5 - Go to previous or next visible item in time ruler (keyframe, marker, work area beginning or

The

Go to previous or next visible item in time ruler (keyframe, marker, work area beginning or end)

J & K

Does not work at all here.

Perhaps I am misunderstanding the nature of this feature but from reading the text in the manual I would come to expect

that hitting i.e. J&K - would go the next visible item in the ruler be that a Keyframe or Marker etc... However, when I hit K timeline takes me to the end of the composition and J to the beginning. And I have a lot of markers set.

Any Ideas

Thanks