Create a new layer. Use the rounded rectangular tool once again and draw your nav bar. Right click the header bar layer, select "Copy Layer Style" and click once on the nav bar layer and select "Paste Layer Style."


To achieve the effect shown above, you need to do the following ("no, you must!"):
Drop Shadow:

Outer Glow:

Stroke:

Gradient Overlay:

Gradient Overlay Color Stops:

Adding text in the Eurostyle style at size 13.33 and with nearly even spacing.

Use the pencil tool, brush size at 1 to add some dividers between the nav bar links.